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POWindows Forms .NET 2.0: How to draw a PNG icon?
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copied!<p><strong>Note:</strong> Question <a href="https://stackoverflow.com/questions/220465/using-256-x-256-vista-icon-in-application">Using 256 x 256 Vista icon in application</a> deals with using a "Vista" icon as the application's icon. This question deals with manually painting a Vista icon.</p> <p><strong>Note:</strong> Question <a href="https://stackoverflow.com/questions/281999/winforms-net-20-how-to-paint-with-the-proper-icon">WinForms .NET 2.0: How to paint the proper sized icon?</a> deals with painting a Vista icon loaded from a file. This question deals with painting a Vista icon that is loaded from a .resource.</p> <hr> <p>I've included an icon in my Visual Studio project that has various formats:</p> <ul> <li>16x16</li> <li>32x32</li> <li>48x48</li> <li>256x256 (PNG compressed)</li> </ul> <p>Now want to draw the 256x256 version. None of the following things I've tried work.</p> <p><strong>The following draws the 32x32 format stretched to 256x256:</strong></p> <pre><code>Icon ico = Properties.Resources.TestIconThatHasA256PNGFormat; e.Graphics.DrawIcon(ico, new Rectangle(0, 0, 256, 256)); </code></pre> <p><strong>The following draws the 32x32 format unstretched:</strong></p> <pre><code>Icon ico = Properties.Resources.TestIconThatHasA256PNGFormat; e.Graphics.DrawIconUnstretched(ico, new Rectangle(0, 0, 256, 256)); </code></pre> <p><strong>The following draws the 32x32 format stretched to 256x256:</strong></p> <pre><code>Icon ico = Properties.Resources.TestIconThatHasA256PNGFormat; e.Graphics.DrawImage(ico.ToBitmap(), new Rectangle(0, 0, 256, 256)); </code></pre> <p><strong>The following draws the 48x48 format stretched to 256x256:</strong></p> <pre><code>Icon ico = Properties.Resources.TestIconThatHasA256PNGFormat; e.Graphics.DrawIcon( new Icon(ico, new Size(256, 256)), new Rectangle(0, 0, 256, 256)); </code></pre> <p>How do I draw the 256x256 format icon?</p> <hr> <p>Notes:</p> <ol> <li><p>The icon is not coming from a file, so <a href="https://stackoverflow.com/questions/220465/using-256-x-256-vista-icon-in-application">PInvoking</a> LoadImage() will not help.</p></li> <li><p>The icon is not the icon associated with a file, so <a href="http://support.microsoft.com/kb/319350" rel="nofollow noreferrer">PInvoking</a> SHGetFileInfo() <a href="https://stackoverflow.com/questions/287041/winforms-net-20-how-to-draw-a-vista-icon#287076">will</a> not help. Nor will <a href="https://stackoverflow.com/questions/220465/using-256-x-256-vista-icon-in-application">using Icon.ExtractAssociatedIcon</a>.</p></li> <li><p>I'm also not trying to author icons with a 256x256 format at runtime, so <a href="http://www.codeproject.com/KB/cs/IconLib.aspx" rel="nofollow noreferrer">libraries designed to do that</a> will not help.</p> <p><a href="https://stackoverflow.com/questions/281999/winforms-net-20-how-to-paint-with-the-proper-icon">2</a>: Question <a href="https://stackoverflow.com/questions/281999/winforms-net-20-how-to-paint-with-the-proper-icon">WinForms .NET 2.0: How to paint the proper sized icon?</a></p></li> </ol>

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