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;
3.  
4. namespace GradientTransparentTest
5. {
6.     public partial class GradientTransparentForm : Form
7.     {
8.         public GradientTransparentForm()
9.         {
10.             InitializeComponent();
11.         }
12.  
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/