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.NET Forum / Windows Forms / Drawing / May 2007How to get rid of black background on Bitmap in GDI+
Hi, The portions of a Bitmap that are not 'covered' by another Graphics object are left black in the final image. Is there a way to make the background white? Thank you! Regards, Jim Light I think I figured it out. Is this the ideal way to do it? Bitmap bitmap = new Bitmap(600, 600); Graphics new_g = Graphics.FromImage(bitmap); new_g.FillRegion(new SolidBrush(Color.White), new Region()); Not really. Try Craphics.Clear(Color.White)  Signature-- Bob Powell [MVP] Visual C#, System.Drawing Ramuseco Limited .NET consulting http://www.ramuseco.com Find great Windows Forms articles in Windows Forms Tips and Tricks http://www.bobpowell.net/tipstricks.htm Answer those GDI+ questions with the GDI+ FAQ http://www.bobpowell.net/faqmain.htm All new articles provide code in C# and VB.NET. Subscribe to the RSS feeds provided and never miss a new article. >I think I figured it out. Is this the ideal way to do it? > > Bitmap bitmap = new Bitmap(600, 600); > Graphics new_g = Graphics.FromImage(bitmap); > new_g.FillRegion(new SolidBrush(Color.White), new Region()); >I think I figured it out. Is this the ideal way to do it? > > Bitmap bitmap = new Bitmap(600, 600); > Graphics new_g = Graphics.FromImage(bitmap); > new_g.FillRegion(new SolidBrush(Color.White), new Region()); Besides what bob said, you should always dispose of Brushes and Regions. You should most definately not create them new like this to be passed into a function. You don't quite have to go to the level of using a try finally to dispose of them but disposing them is an absolute must. Michael > >I think I figured it out. Is this the ideal way to do it? > [quoted text clipped - 8 lines] > > Michael Ah! You are right, Michael, doing it this way, you really lose control over when these objects are released. Thank you! Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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