Shaped Windows Forms and Controls in C# .NET

Thank you Tristan for the tip. I am in need of some clarification, as I've only touched the surface of Regions in .NET. Where abouts should I initialize the GraphicsPath; in the constructor or am I supposed to override the Form_Paint function? I've already tried overriding the Form_Paint function and the following code shows exactly how I did this. The only problem I've had with this method is that I can't seem to draw a perfect arc (eg, rounded corner in which I want to make transparent). My form (the image I'm using as my background) has 4 rounded corners. The following Form_Paint function crops the top, bottom, left and right portion of the image (basically just 4 rectangles) and then I try to crop the top left corner of the image, unsuccessfully. There always seems to be a visible portion of the background peeking from the edge. When I change one point, it throws off all of the rest of the points. I even tried adding another point for precision, however that method doesn't do me any justice. Here's the overridden Form_Paint function: [CODE] private void Form_Paint(object sender, PaintEventArgs e) { Graphics g = e.Graphics; Rectangle mainRect = new Rectangle(0, 0, 800, 568); Region mainRegion = new Region(mainRect); e.Graphics.SetClip(mainRegion, CombineMode.Replace); // Create a GraphicsPath object. // Trim top GraphicsPath myPath = new GraphicsPath(); myPath.AddLine(0, 8, 800, 8); myPath.AddLine(800, 0, 0, 0); Region ExcludeRegion = new Region(myPath); e.Graphics.ExcludeClip(ExcludeRegion); // Trim bottom GraphicsPath myPath2 = new GraphicsPath(); myPath2.AddLine(0, 560, 800, 560); myPath2.AddLine(800, 568, 0, 568); Region ExcludeRegion2 = new Region(myPath2); e.Graphics.ExcludeClip(ExcludeRegion2); // Trim left GraphicsPath myPath3 = new GraphicsPath(); myPath3.AddLine(0, 568, 7, 568); myPath3.AddLine(7, 0, 0, 0); Region ExcludeRegion3 = new Region(myPath3); e.Graphics.ExcludeClip(ExcludeRegion3); // Trim right GraphicsPath myPath4 = new GraphicsPath(); myPath4.AddLine(792, 568, 800, 568); myPath4.AddLine(800, 0, 792, 0); Region ExcludeRegion4 = new Region(myPath4); e.Graphics.ExcludeClip(ExcludeRegion4); Point point1 = new Point(7, 80); Point point2 = new Point(17, 50); Point point3 = new Point(27, 35); Point point4 = new Point(57, 15); // Create an array of the points. Point[] curvePoints = { point1, point2, point3, point4 }; GraphicsPath myPath5 = new GraphicsPath(); myPath5.AddCurve(curvePoints, 0, 3, 1.0f); myPath5.AddLine(80,8,7,8); Region ExcludeRegion5 = new Region(myPath5); e.Graphics.ExcludeClip(ExcludeRegion5); e.Graphics.DrawImage(img, 0, 0, 800,568); } [/CODE] Thank you again for your help. Matt

Instead of using color keying [through the TransparencyKey property], try to set the forms region property. You say that you are not familiar with GDI(+) so try the folowing: - Create a new System.Drawing.Drawing2D.GraphicsPath and add some shapes. - Create a System.Drawing.Region, providing the newly created GraphicsPath object as an argument. - Set the forms Region property to the newly created Region object. Hope this helps :) [Regions don't use 'Transparency Colors', so they don't depend on color depths etc.]