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<aside>
<a href="#the-gd-library" title="The GD Library">The GD Library</a>
<a href="#gdimagearc" title="gdImageArc()"><code>gdImageArc()</code></a>
<a href="#gdimagecreate" title="gdImageCreate()"><code>gdImageCreate()</code></a>
<a href="#gdimagecreatefromgd" title="gdImageCreateFromGD()"><code>gdImageCreateFromGD()</code></a>
<a href="#gdimagecreatefromgif" title="gdImageCreateFromGif()"><code>gdImageCreateFromGif()</code></a>
<a href="#gdimagecreatefromjpeg" title="gdImageCreateFromJpeg()"><code>gdImageCreateFromJpeg()</code></a>
<a href="#gdimagecreatefrompng" title="gdImageCreateFromPng()"><code>gdImageCreateFromPng()</code></a>
<a href="#gdimagecreatefromwbmp" title="gdImageCreateFromWBmp()"><code>gdImageCreateFromWBmp()</code></a>
<a href="#gdimagecreatetruecolor" title="gdImageCreateTrueColor()"><code>gdImageCreateTrueColor()</code></a>
<a href="#gdimagedashedline" title="gdImageDashedLine()"><code>gdImageDashedLine()</code></a>
<a href="#gdimagefill" title="gdImageFill()"><code>gdImageFill()</code></a>
<a href="#gdimagefilledarc" title="gdImageFilledArc()"><code>gdImageFilledArc()</code></a>
<a href="#gdimagefilledellipse" title="gdImageFilledEllipse()"><code>gdImageFilledEllipse()</code></a>
<a href="#gdimagefilledpolygon" title="gdImageFilledPolygon()"><code>gdImageFilledPolygon()</code></a>
<a href="#gdimagefilledrectangle" title="gdImageFilledRectangle()"><code>gdImageFilledRectangle()</code></a>
<a href="#gdimagefilltoborder" title="gdImageFillToBorder()"><code>gdImageFillToBorder()</code></a>
<a href="#gdimagegd" title="gdImageGD()"><code>gdImageGD()</code></a>
<a href="#gdimagegif" title="gdImageGif()"><code>gdImageGif()</code></a>
<a href="#gdimagejpeg" title="gdImageJpeg()"><code>gdImageJpeg()</code></a>
<a href="#gdimageline" title="gdImageLine()"><code>gdImageLine()</code></a>
<a href="#gdimageopenpolygon" title="gdImageOpenPolygon()"><code>gdImageOpenPolygon()</code></a>
<a href="#gdimagepng" title="gdImagePng()"><code>gdImagePng()</code></a>
<a href="#gdimagepolygon" title="gdImagePolygon()"><code>gdImagePolygon()</code></a>
<a href="#gdimagerectangle" title="gdImageRectangle()"><code>gdImageRectangle()</code></a>
<a href="#gdimagesetantialiased" title="gdImageSetAntiAliased()"><code>gdImageSetAntiAliased()</code></a>
<a href="#gdimagesetantialiaseddontblend" title="gdImageSetAntiAliasedDontBlend()"><code>gdImageSetAntiAliasedDontBlend()</code></a>
<a href="#gdimagesetbrush" title="gdImageSetBrush()"><code>gdImageSetBrush()</code></a>
<a href="#gdimagesetpixel" title="gdImageSetPixel()"><code>gdImageSetPixel()</code></a>
<a href="#gdimagesetstyle" title="gdImageSetStyle()"><code>gdImageSetStyle()</code></a>
<a href="#gdimagesetthickness" title="gdImageSetThickness()"><code>gdImageSetThickness()</code></a>
<a href="#gdimagesettile" title="gdImageSetTile()"><code>gdImageSetTile()</code></a>
<a href="#gdimagewbmp" title="gdImageWBmp()"><code>gdImageWBmp()</code></a>
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<main>
<section>
<h4><a href="#the-gd-library" class="d-id" id="the-gd-library" title="∞">The GD Library</a><span class="d-eb"><a href="#" title="Top" class="d-ebi">⌃</a> | <a href="index.html" title="Index" class="d-ebi">☰</a> | <a href="https://github.com/vszakats/hb/edit/main/contrib/hbgd/doc/en/gdwrp.txt">Improve this doc</a></span></h4>
<div class="d-ol">Read me file for GD Library</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>HBGD</code> is basically a wrapper of Thomas Boutell's GD Library version 2.x. GD Library is a powerful graphic library very useful especially under CGI environment.</div>
<div><p><code>HBGD</code> actually contains almost all GD functions, more a set of functions that extends original library and a set of classes that make easier to work with this library.</div>
<div><p>Thomas Boutell's GD library actually supports these graphic formats: PNG, JPEG, GIF, Animated GIF, GD, GD2, WBMP, XBM, <code>XPM WBMP</code> is Wireless Bitmap, not Windows Bitmap, and it is used for WAP. It is a B&W bitmap.</div>
<div><p><code>HBGD</code> actually supports PNG, JPEG, GIF, GD, WBMP The other Animated GIF, GD2, XBM and XPM are not wrapped actually.</div>
<div><p>Using this library you can, as a little example: - create an image in memory, true color or with a 256 colors palette; - load and save an image of above formats and convert it to another supported format; - draw dots, lines, dashed lines, polygons, rectangles, arcs, circles and ellipses; - fill with colors; - draw with brushes; - check a point or part or full image with a lot of query functions; - draw characters and words with internal fonts or using TrueType fonts; - write strings on a base line or on a circle line and with any angle degree; - copy, resize and rotate part or full image;</div>
<div><p>and, over this, some functions to clone, crop, zoom, rotate outside and inside.</div>
<div><p>The prefix for all functions is GD (i.e. <code><a href="#gdimagecreate">gdImageCreate()</a></code> )</div>
<div><p>You can use directly all API functions or TGD class.</div>
<div><p>NOTE: Not all functions are wrapped.</div>
</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">Document</div>
<div class="d-d">See also</div>
<div class="d-it"><code>GDChart Class</code>, <code>GDImage Class</code></div>
</section>
<section>
<h4><a href="#gdimagearc" class="d-id" id="gdimagearc" title="∞"><code>gdImageArc()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L857" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageArc">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageArc">in Discussions</a></nav></nav></span>
<span class="d-eb"><a href="#" title="Top" class="d-ebi">⌃</a> | <a href="index.html" title="Index" class="d-ebi">☰</a> | <a href="https://github.com/vszakats/hb/edit/main/contrib/hbgd/doc/en/gdwrp.txt">Improve this doc</a></span></h4>
<div class="d-ol">Draws a partial ellipse centered at a given point.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageArc( <pImage>, <cx>, <cy>, <w>, <h>, <s>, <e>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>cx</code> - center point horizontal position <code>cy</code> - center point vertical position <code>w</code> - width <code>h</code> - height <code>s</code> - start degree <code>e</code> - end degree <code>nColor</code> - Color index</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageArc()</code> is used to draw a partial ellipse centered at the given point, with the specified width and height in pixels. The arc begins at the position in degrees specified by s and ends at the position specified by e. The arc is drawn in the color specified by the last argument. A circle can be drawn by beginning from 0 degrees and ending at 360 degrees, with width and height being equal. <code>e</code> must be greater than <code>s</code>. Values greater than 360 are interpreted modulo 360.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw an ellipse
gdImageArc( pImage, 50, 25, 98, 48, 0, 360, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreate" class="d-id" id="gdimagecreate" title="∞"><code>gdImageCreate()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L504" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreate">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreate">in Discussions</a></nav></nav></span>
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<div class="d-ol">Create a palette-based image in memory with no more that 256 colors.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreate( <nPixelWidth>, <nPixelHeight> ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>nPixelWidth</code> - image width <code>nPixelHeight</code> - image height</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreate()</code> creates an empty image in memory. This image has no more than 256 colors.</div>
<div><p><code>gdImageCreate()</code> returns an image pointer or <code>NIL</code> if unable to create the image.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreate( 64, 64 )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatefromgd" class="d-id" id="gdimagecreatefromgd" title="∞"><code>gdImageCreateFromGD()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L557" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateFromGD">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateFromGD">in Discussions</a></nav></nav></span>
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<div class="d-ol">Load a GD image file.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateFromGD( <cFile> | <nHandle> | <pPointer> [, <nSize> ] ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>pPointer</code> - Memory image pointer <code>nSize</code> - Image size</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateFromGD()</code> creates a GD image from a file or a handle or another image in memory.</div>
<div><p>You can use one of 3 syntax:</div>
<pre><code class="language-c">pImage := gdImageCreateFromGD( "myimage.gd" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromGD( nFileHandle, nSize )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromGD( pMemoryImagePtr, nSize )
</code></pre>
<div><p> the <code>pImage</code> pointer returned will be not <code>NIL</code> if successful and will contains a memory pointer to the GD image.</div>
<div><p><code>HBGD</code> uses it's own memory to manage an image, so it is important to use this function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromGD( "myimage.gd" )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code>, <code><a href="#gdimagecreatefromjpeg">gdImageCreateFromJpeg()</a></code>, <code><a href="#gdimagecreatefrompng">gdImageCreateFromPng()</a></code>, <code><a href="#gdimagecreatefromwbmp">gdImageCreateFromWBmp()</a></code>, <code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatefromgif" class="d-id" id="gdimagecreatefromgif" title="∞"><code>gdImageCreateFromGif()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L536" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateFromGif">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateFromGif">in Discussions</a></nav></nav></span>
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<div class="d-ol">Load a GIF image file.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateFromGif( <cFile> | <nHandle> | <pPointer> [, <nSize> ] ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>pPointer</code> - Memory image pointer <code>nSize</code> - Image size</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateFromGif()</code> creates a GIF image from a file or a handle or another image in memory.</div>
<div><p>You can use one of 3 syntax:</div>
<pre><code class="language-c">pImage := gdImageCreateFromGif( "myimage.gif" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromGif( nFileHandle, nSize )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromGif( pMemoryImagePtr, nSize )
</code></pre>
<div><p> the <code>pImage</code> pointer returned will be not <code>NIL</code> if successful and will contains a memory pointer to the gif image.</div>
<div><p><code>HBGD</code> uses it's own memory to manage an image, so it is important to use this function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromGif( "myimage.gif" )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagecreatefromgd">gdImageCreateFromGD()</a></code>, <code><a href="#gdimagecreatefromjpeg">gdImageCreateFromJpeg()</a></code>, <code><a href="#gdimagecreatefrompng">gdImageCreateFromPng()</a></code>, <code><a href="#gdimagecreatefromwbmp">gdImageCreateFromWBmp()</a></code>, <code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatefromjpeg" class="d-id" id="gdimagecreatefromjpeg" title="∞"><code>gdImageCreateFromJpeg()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L529" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateFromJpeg">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateFromJpeg">in Discussions</a></nav></nav></span>
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<div class="d-ol">Load a JPEG image file.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateFromJpeg( <cFile> | <nHandle> | <pPointer> [, <nSize> ] ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>pPointer</code> - Memory image pointer <code>nSize</code> - Image size</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateFromJpeg()</code> creates a JPEG image from a file or a handle or another image in memory.</div>
<div><p>You can use one of 3 syntax:</div>
<pre><code class="language-c">pImage := gdImageCreateFromJpeg( "myimage.jpg" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromJpeg( nFileHandle, nSize )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromJpeg( pMemoryImagePtr, nSize )
</code></pre>
<div><p> the <code>pImage</code> pointer returned will be not <code>NIL</code> if successful and will contains a memory pointer to the JPEG image.</div>
<div><p><code>HBGD</code> uses it's own memory to manage an image, so it is important to use this function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromJpeg( "myimage.jpg" )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagecreatefromgd">gdImageCreateFromGD()</a></code>, <code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code>, <code><a href="#gdimagecreatefrompng">gdImageCreateFromPng()</a></code>, <code><a href="#gdimagecreatefromwbmp">gdImageCreateFromWBmp()</a></code>, <code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatefrompng" class="d-id" id="gdimagecreatefrompng" title="∞"><code>gdImageCreateFromPng()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L543" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateFromPng">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateFromPng">in Discussions</a></nav></nav></span>
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<div class="d-ol">Load a PNG image file.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateFromPng( <cFile> | <nHandle> | <pPointer> [, <nSize> ] ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>pPointer</code> - Memory image pointer <code>nSize</code> - Image size</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateFromPng()</code> creates a PNG image from a file or a handle or another image in memory.</div>
<div><p>You can use one of 3 syntax:</div>
<pre><code class="language-c">pImage := gdImageCreateFromPng( "myimage.png" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromPng( nFileHandle, nSize )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromPng( pMemoryImagePtr, nSize )
</code></pre>
<div><p> the <code>pImage</code> pointer returned will be not <code>NIL</code> if successful and will contains a memory pointer to the png image.</div>
<div><p><code>HBGD</code> uses it's own memory to manage an image, so it is important to use this function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromPng( "myimage.png" )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagecreatefromgd">gdImageCreateFromGD()</a></code>, <code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code>, <code><a href="#gdimagecreatefromjpeg">gdImageCreateFromJpeg()</a></code>, <code><a href="#gdimagecreatefromwbmp">gdImageCreateFromWBmp()</a></code>, <code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatefromwbmp" class="d-id" id="gdimagecreatefromwbmp" title="∞"><code>gdImageCreateFromWBmp()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L550" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateFromWBmp">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateFromWBmp">in Discussions</a></nav></nav></span>
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<div class="d-ol">Load a WBMP image file.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateFromWBmp( <cFile> | <nHandle> | <pPointer> [, <nSize> ] ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>pPointer</code> - Memory image pointer <code>nSize</code> - Image size</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateFromWBmp()</code> creates a WBMP image from a file or a handle or another image in memory.</div>
<div><p>You can use one of 3 syntax:</div>
<pre><code class="language-c">pImage := gdImageCreateFromWBmp( "myimage.wbmp" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromWBmp( nFileHandle, nSize )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">pImage := gdImageCreateFromWBmp( pMemoryImagePtr, nSize )
</code></pre>
<div><p> the <code>pImage</code> pointer returned will be not <code>NIL</code> if successful and will contains a memory pointer to the WBMP image.</div>
<div><p><code>HBGD</code> uses it's own memory to manage an image, so it is important to use this function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromWBmp( "myimage.wbmp" )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagecreatefromgd">gdImageCreateFromGD()</a></code>, <code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code>, <code><a href="#gdimagecreatefromjpeg">gdImageCreateFromJpeg()</a></code>, <code><a href="#gdimagecreatefrompng">gdImageCreateFromPng()</a></code>, <code><a href="#gdimagecreatetruecolor">gdImageCreateTrueColor()</a></code></div>
</section>
<section>
<h4><a href="#gdimagecreatetruecolor" class="d-id" id="gdimagecreatetruecolor" title="∞"><code>gdImageCreateTrueColor()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L517" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageCreateTrueColor">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageCreateTrueColor">in Discussions</a></nav></nav></span>
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<div class="d-ol">Create a true color image in memory.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageCreateTrueColor( <nPixelWidth>, <nPixelHeight> ) → pImage</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>nPixelWidth</code> - image width <code>nPixelHeight</code> - image height</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>pImage</code> - Image pointer</div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageCreateTrueColor()</code> creates an empty image in memory. This image has true colors.</div>
<div><p><code>gdImageCreateTrueColor()</code> returns an image pointer or <code>NIL</code> if unable to create the image.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateTrueColor( 64, 64 )
// Use image here
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreate">gdImageCreate()</a></code></div>
</section>
<section>
<h4><a href="#gdimagedashedline" class="d-id" id="gdimagedashedline" title="∞"><code>gdImageDashedLine()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L651" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageDashedLine">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageDashedLine">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a dashed line between two end points (x1, y1 and x2, y2) with a particular color index.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageDashedLine( <pImage>, <x1>, <y1>, <x2>, <y2>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>x1</code> - 1st point horizontal position <code>y1</code> - 1st point vertical position <code>x2</code> - 2nd point horizontal position <code>y2</code> - 2nd point vertical position <code>nColor</code> - Color index</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageDashedLine()</code> Draws a dashed line between two end points (x1, y1 and x2, y2) with a particular color index.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw a dashed line
gdImageDashedLine( pImage, 10, 10, 90, 90, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefill" class="d-id" id="gdimagefill" title="∞"><code>gdImageFill()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L985" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFill">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFill">in Discussions</a></nav></nav></span>
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<div class="d-ol">floods a portion of the image with the specified color.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageFill( <pImage>, <x>, <y>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>x</code> - start point horizontal position <code>y</code> - start point vertical position <code>nColor</code> - Color index of filling color</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFill()</code> floods a portion of the image with the specified color, beginning at the specified point and flooding the surrounding region of the same color as the starting point. For a way of flooding a region defined by a specific border color rather than by its interior color, see <code><a href="#gdimagefilltoborder">gdImageFillToBorder()</a></code>. The fill color can be <code>gdTiled</code>, resulting in a tile fill using another image as the tile. However, the tile image cannot be transparent. If the image you wish to fill with has a transparent color index, call <code>gdImageTransparent()</code> on the tile image and set the transparent color index to -1 to turn off its transparency.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue, red
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
red := gdImageColorAllocate( pImage, 255, 0, 0 )
// Draw an ellipse
gdImageArc( pImage, 50, 25, 98, 48, 0, 360, blue )
// Fill the ellipse
gdImageFill( pImage, 50, 50, red )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagearc">gdImageArc()</a></code>, <code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefilledarc" class="d-id" id="gdimagefilledarc" title="∞"><code>gdImageFilledArc()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L884" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFilledArc">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFilledArc">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a partial filled ellipse centered at a given point.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageArc( <pImage>, <cx>, <cy>, <w>, <h>, <s>, <e>, <nColor>, <nStyle> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>cx</code> - center point horizontal position <code>cy</code> - center point vertical position <code>w</code> - width <code>h</code> - height <code>s</code> - start degree <code>e</code> - end degree <code>nColor</code> - Color index <code>nStyle</code> - fill style</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFilledArc()</code> is used to draw a partial ellipse centered at the given point, with the specified width and height in pixels. The arc begins at the position in degrees specified by s and ends at the position specified by e. The arc is drawn in the color specified by the last argument. A circle can be drawn by beginning from 0 degrees and ending at 360 degrees, with width and height being equal. <code>e</code> must be greater than <code>s</code>. Values greater than 360 are interpreted modulo 360.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
<div><p>Last parameter <code>nStyle</code> is a bitwise OR of the following possibilities:</div>
<div class="d-t d-t0">
<div>gdArc</div>
<div>gdChord</div>
<div>gdPie (synonym for gdArc)</div>
<div>gdNoFill</div>
<div>gdEdged</div>
</div>
<div><p><code>gdArc</code> and <code>gdChord</code> are mutually exclusive; <code>gdChord</code> just connects the starting and ending angles with a straight line, while <code>gdArc</code> produces a rounded edge. <code>gdPie</code> is a synonym for <code>gdArc</code>. <code>gdNoFill</code> indicates that the arc or chord should be outlined, not filled. <code>gdEdged</code>, used together with <code>gdNoFill</code>, indicates that the beginning and ending angles should be connected to the center; this is a good way to outline (rather than fill) a 'pie slice'</div>
<div><p>these constants are defined in <code><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gd.ch">gd.ch</a></code></div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">#include "gd.ch"
LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw an ellipse
gdImageFilledArc( pImage, 50, 25, 98, 48, 0, 360, blue, gdArc )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefilledellipse" class="d-id" id="gdimagefilledellipse" title="∞"><code>gdImageFilledEllipse()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L912" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFilledEllipse">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFilledEllipse">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a filled ellipse centered at a given point.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageFilledEllipse( <pImage>, <cx>, <cy>, <w>, <h>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>cx</code> - center point horizontal position <code>cy</code> - center point vertical position <code>w</code> - width <code>h</code> - height <code>nColor</code> - Color index</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFilledEllipse()</code> is used to draw a filled ellipse centered at the given point, with the specified width and height in pixels.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw an ellipse
gdImageFilledEllipse( pImage, 50, 25, 98, 48, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefilledpolygon" class="d-id" id="gdimagefilledpolygon" title="∞"><code>gdImageFilledPolygon()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L791" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFilledPolygon">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFilledPolygon">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a filled polygon with vertices (at least 3) with a particular color index.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageFilledPolygon( <pImage>, <aVertices>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it">
<div><code>pImage</code> - Image pointer <code>aVertices</code> - Array of point array { <code>x</code>, <code>y</code> } where</div>
<div><code>x</code> is horizontal position <code>y</code> is vertical position</div>
<div><code>nColor</code> - Color index</div>
</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFilledPolygon()</code> Draws a filled polygon with vertices (at least 3) with a particular color index.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
LOCAL aVertices := { ;
{ 50, 0 }, ;
{ 99, 99 }, ;
{ 0, 99 } }
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw a filled polygon
gdImageFilledPolygon( pImage, aVertices, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefilledrectangle" class="d-id" id="gdimagefilledrectangle" title="∞"><code>gdImageFilledRectangle()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L834" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFilledRectangle">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFilledRectangle">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a filled rectangle with a particular color index.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageFilledRectangle( <pImage>, <x1>, <y1>, <x2>, <y2>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>x1</code> - upper left point horizontal position <code>y1</code> - upper left point vertical position <code>x2</code> - lower right point horizontal position <code>y2</code> - lower right point vertical position <code>nColor</code> - Color index</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFilledRectangle()</code> draws a filled rectangle between 2 points with a particular color index.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw a filled rectangle
gdImageFilledRectangle( pImage, 10, 10, 50, 50, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagefilltoborder" class="d-id" id="gdimagefilltoborder" title="∞"><code>gdImageFillToBorder()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L935" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageFillToBorder">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageFillToBorder">in Discussions</a></nav></nav></span>
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<div class="d-ol">floods a portion of the image with the specified color.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageFillToBorder( <pImage>, <x>, <y>, <nBorder>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>x</code> - start point horizontal position <code>y</code> - start point vertical position <code>nBorder</code> - Color index where fill stops <code>nColor</code> - Color index of filling color</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageFillToBorder()</code> floods a portion of the image with the specified color, beginning at the specified point and stopping at the specified border color. For a way of flooding an area defined by the color of the starting point, see <code><a href="#gdimagefill">gdImageFill()</a></code>.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue, red
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
red := gdImageColorAllocate( pImage, 255, 0, 0 )
// Draw an ellipse
gdImageArc( pImage, 50, 25, 98, 48, 0, 360, blue )
// Fill the ellipse
gdImageFillToBorder( pImage, 50, 50, blue, red )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagearc">gdImageArc()</a></code>, <code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagegd" class="d-id" id="gdimagegd" title="∞"><code>gdImageGD()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L592" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageGD">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageGD">in Discussions</a></nav></nav></span>
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<div class="d-ol">Save a GD image.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageGD( <pImage>, <cFile> | <nHandle> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>cFile</code> - Image file name <code>nHandle</code> - File handle</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageGD()</code> saves a GD image to a file or a handle.</div>
<div><p>You can use one of 2 syntax:</div>
<pre><code class="language-c">gdImageGD( pImage, "myimage.gd" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">gdImageGD( pImage, nFileHandle )
</code></pre>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromGif( "myimage.gif" )
// Image conversion
gdImageGD( pImage, "myimage.gd" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code></div>
</section>
<section>
<h4><a href="#gdimagegif" class="d-id" id="gdimagegif" title="∞"><code>gdImageGif()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L571" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageGif">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageGif">in Discussions</a></nav></nav></span>
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<div class="d-ol">Save a GIF image.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageGif( <pImage>, <cFile> | <nHandle> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>cFile</code> - Image file name <code>nHandle</code> - File handle</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageGif()</code> saves a GIF image to a file or a handle.</div>
<div><p>You can use one of 2 syntax:</div>
<pre><code class="language-c">gdImageGif( pImage, "myimage.gif" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">gdImageGif( pImage, nFileHandle )
</code></pre>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromJpeg( "myimage.jpg" )
// Image conversion
gdImageGif( pImage, "myimage.gif" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreatefromjpeg">gdImageCreateFromJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagejpeg" class="d-id" id="gdimagejpeg" title="∞"><code>gdImageJpeg()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L564" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageJpeg">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageJpeg">in Discussions</a></nav></nav></span>
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<div class="d-ol">Save a JPEG image.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageJpeg( <pImage>, <cFile> | <nHandle> [, <nCompressionLevel> ] ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it">
<div><code>pImage</code> - Image pointer <code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>nCompressionLevel</code> - a numeric value between 0=max compression and 95=min compression (best quality)</div>
<div>default is -1=auto</div>
</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageJpeg()</code> saves a JPEG image to a file or a handle.</div>
<div><p>You can use one of 2 syntax:</div>
<pre><code class="language-c">gdImageJpeg( pImage, "myimage.jpg" )
</code></pre>
<div><p> or</div>
<pre><code class="language-c">gdImageJpeg( pImage, nFileHandle )
</code></pre>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage := gdImageCreateFromGif( "myimage.gif" )
// Image conversion
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code><a href="#gdimagecreatefromgif">gdImageCreateFromGif()</a></code></div>
</section>
<section>
<h4><a href="#gdimageline" class="d-id" id="gdimageline" title="∞"><code>gdImageLine()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L628" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageLine">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageLine">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws a line between two end points (x1, y1 and x2, y2) with a particular color index.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageLine( <pImage>, <x1>, <y1>, <x2>, <y2>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it"><code>pImage</code> - Image pointer <code>x1</code> - 1st point horizontal position <code>y1</code> - 1st point vertical position <code>x2</code> - 2nd point horizontal position <code>y2</code> - 2nd point vertical position <code>nColor</code> - Color index</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageLine()</code> Draws a line between two end points (x1, y1 and x2, y2) with a particular color index.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draw a line
gdImageLine( pImage, 10, 10, 90, 90, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimageopenpolygon" class="d-id" id="gdimageopenpolygon" title="∞"><code>gdImageOpenPolygon()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L721" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImageOpenPolygon">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImageOpenPolygon">in Discussions</a></nav></nav></span>
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<div class="d-ol">Draws an open polygon with vertices (at least 3) with a particular color index.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImageOpenPolygon( <pImage>, <aVertices>, <nColor> ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it">
<div><code>pImage</code> - Image pointer <code>aVertices</code> - Array of point array { <code>x</code>, <code>y</code> } where</div>
<div><code>x</code> is horizontal position <code>y</code> is vertical position</div>
<div><code>nColor</code> - Color index</div>
</div>
<div class="d-d">Returns</div>
<div class="d-it"><code>NIL</code></div>
<div class="d-d">Description</div>
<div class="d-it">
<div><p><code>gdImageOpenPolygon()</code> Draws an open polygon with vertices (at least 3) with a particular color index. Unlike <code><a href="#gdimagepolygon">gdImagePolygon()</a></code> the endpoints of the line sequence are not connected to close the polygon.</div>
<div><p>To set the color index you have to use <code>gdImageColorAllocate()</code> function.</div>
</div>
<div class="d-d">Examples</div>
<section class="d-ex"><div class="playground"><pre contenteditable="true" spellcheck="false"><code class="language-c">LOCAL pImage
LOCAL blue
LOCAL aVertices := { ;
{ 50, 0 }, ;
{ 99, 99 }, ;
{ 0, 99 } }
// Create an image in memory
pImage := gdImageCreate( 100, 100 )
// Allocate color
blue := gdImageColorAllocate( pImage, 0, 0, 255 )
// Draws an open polygon
gdImageOpenPolygon( pImage, aVertices, blue )
// Save the image
gdImageJpeg( pImage, "myimage.jpg" )
</code></pre></div></section>
<div class="d-d">Status</div>
<div class="d-it">Ready</div>
<div class="d-d">Compliance</div>
<div class="d-it">Not applicable</div>
<div class="d-d">Platforms</div>
<div class="d-it">Available on all platforms</div>
<div class="d-d">Tag</div>
<div class="d-it">hbgd</div>
<div class="d-d">See also</div>
<div class="d-it"><code>gdImageColorAllocate()</code>, <code><a href="#gdimagecreate">gdImageCreate()</a></code>, <code><a href="#gdimagejpeg">gdImageJpeg()</a></code></div>
</section>
<section>
<h4><a href="#gdimagepng" class="d-id" id="gdimagepng" title="∞"><code>gdImagePng()</code></a><a href="https://github.com/vszakats/hb/blob/096e855/contrib/hbgd/gdwrp.c#L578" class="d-so" title="contrib/hbgd/gdwrp.c">Source code</a><span class="d-so"><nav class="dropdown d-ebi">🔎<nav class="dropdown-content d-dd"><a href="https://github.com/vszakats/hb/search?type=Code&q=gdImagePng">in Repository</a><a href="https://google.com/search?q=site:groups.google.com/d/msg/harbour+gdImagePng">in Discussions</a></nav></nav></span>
<span class="d-eb"><a href="#" title="Top" class="d-ebi">⌃</a> | <a href="index.html" title="Index" class="d-ebi">☰</a> | <a href="https://github.com/vszakats/hb/edit/main/contrib/hbgd/doc/en/gdwrp.txt">Improve this doc</a></span></h4>
<div class="d-ol">Save a PNG image.</div>
<div class="d-d">Syntax</div>
<div class="d-sy"><pre><code>gdImagePng( <pImage>, <cFile> | <nHandle> [, <nCompressionLevel> ] ) → NIL</code></pre></div>
<div class="d-d">Arguments</div>
<div class="d-it">
<div><code>pImage</code> - Image pointer <code>cFile</code> - Image file name <code>nHandle</code> - File handle <code>nCompressionLevel</code> - a numeric value between 0=no compression and 9=max compression</div>
<div>default is -1=auto</div>
</div>
<div class="d-d">Returns</div>