背景渐变

关键词： 背景渐变、重写OnPaintBackground方法。

GradientFill class and the Win32Helper class可以在这找到

The first thing I started with was to create a gradient background. I found that the best way achieving this would be to override OnPaintBackground in the Screen class. I found a very good article on how to do this on MSDN: How to display a gradient fill . I copied the GradientFill class and the Win32Helper class into my project, I didn’t bother using the GradientFilledButton class since I only needed gradient for my background.

Then I override the OnPaintBackground in my Screen , giving me this Form :

1. using System . Drawing ;
2. using System . Windows . Forms ;
4. namespace GradientTransparentTest
5. {
6. public partial class GradientTransparentForm : Form
7. {
8. public GradientTransparentForm ( )
9. {
10. InitializeComponent ( ) ;
11. }
13. // Paints the background of the form with a GradientFill pattern.
14. protected override void OnPaintBackground ( PaintEventArgs e )
15. {
16. GradientFill. Fill (
17. e. Graphics , ClientRectangle,
18. Color. Silver , Color. LightBlue ,
19. GradientFill. FillDirection . LeftToRight ) ;
20. e. Graphics . Dispose ( ) ;
21. }
22. }
23. }

This is what my simple Form with Gradient background looks like

参考资料：

http://www.cnblogs.com/chy710/archive/2009/09/15/1567210.html

http://breathingtech.com/2009/creating-gradient-background-with-transparent-labels-in-net-compact-framework/