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POGenerate image with some transparent parts
 

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  1. POGenerate image with some transparent parts
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    <p>Im trying to generate a small square 32 by 32 pixels with a 10 by 10 squareish transparent gap in the middle.</p> <p>This is what I have so far:</p> <pre><code>private Image CreatePicture(){ // Create a new Bitmap object, 32 x 32 pixels in size Bitmap canvas = new Bitmap(32,32,System.Drawing.Imaging.PixelFormat.Format16bppRgb555); for(int i=10;i&lt;21;i++){ for(int p=10;p&lt;21;p++){ canvas.SetPixel(i,p,Color.Lime); } } canvas.MakeTransparent(Color.Lime); // return the picture return canvas; } </code></pre> <p>Its a it rough and not going to be the final "optimized version" its just a rough demo script. The problem is the returned image does not transparency instead its just a grey box :(.</p> <p>Any help appreciated.</p> <p>Michael</p> <p>UPDATE: I have updated the script with the PixelFormat set to an Alpha RGB format which it actually accepts without erroring on runtime. Now though if I remove the "canvas.MakeTransparent(Color.Lime);" line it shows a lime box in the middle with it it just shows a grey box the same colour as the grey background; so it seems as if transparency is being recognised just not implimenting the transparency!</p> <pre><code>private Bitmap CreatePicture(){ // Create a new Bitmap object, 50 x 50 pixels in size Bitmap canvas = new Bitmap(82,82,System.Drawing.Imaging.PixelFormat.Format32bppArgb); for(int i=10;i&lt;71;i++){ for(int p=10;p&lt;71;p++){ canvas.SetPixel(i,p,Color.Lime); } } canvas.MakeTransparent(Color.Lime); // return the picture return canvas; } </code></pre>
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    1. COfor those asking im not going to be saving the image just displaying it
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    2. COjust wondering, if this is used for some kinda automated favicon ?
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      1. USBerggreenDK
 

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