一、窗体变透明,需要加三个属性:
AllowsTransparency="True"
Background="Transparent"
WindowStyle="None"
二、利用win32接口实现窗体鼠标事件穿透
Win32 API:
private const int WS_EX_TRANSPARENT = 0x20;
private const int GWL_EXSTYLE = -20;
[DllImport("user32", EntryPoint = "SetWindowLong")]
private static extern uint SetWindowLong(IntPtr hwnd, int nIndex, uint dwNewLong);
[DllImport("user32", EntryPoint = "GetWindowLong")]
private static extern uint GetWindowLong(IntPtr hwnd, int nIndex);
View Code
在窗体的构造函数中调用:
InitializeComponent();
this.SourceInitialized += delegate
{
IntPtr hwnd = new WindowInteropHelper(this).Handle;
uint extendedStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
SetWindowLong(hwnd, GWL_EXSTYLE, extendedStyle | WS_EX_TRANSPARENT);
};
View Code
参考文章:
http://www.yuantk.com/weblog/a9ca4f90-56fc-4c8f-bc93-15d63fda4f57.html