C# WinForm实现Win7 Aero磨砂效果

[StructLayout(LayoutKind.Sequential)]

public struct MARGINS

{

public int Left;

public int Right;

public int Top;

public int Bottom;

}

[DllImport("dwmapi.dll", PreserveSig = false)]

static extern void DwmExtendFrameIntoClientArea(IntPtr hwnd, ref MARGINS margins);

[DllImport("dwmapi.dll", PreserveSig = false)]

static extern bool DwmIsCompositionEnabled(); //Dll 导入 DwmApi

protected override void OnLoad(EventArgs e)

{

//如果启用Aero

if (DwmIsCompositionEnabled())

{

MARGINS m = new MARGINS();

m.Right = -1; //设为负数,则全窗体透明

DwmExtendFrameIntoClientArea(this.Handle, ref m); //开启全窗体透明效果

}

base.OnLoad(e);

}

protected override void OnPaintBackground(PaintEventArgs e)

{

base.OnPaintBackground(e);

if (DwmIsCompositionEnabled())

{

e.Graphics.Clear(Color.Black); //将窗体用黑色填充（Dwm 会把黑色视为透明区域）

}

}