WPF窗口如何获得一个句柄？

1） 在窗体事件内获得句柄

privatevoidWindow_Loaded(object sender,RoutedEventArgs e)

{

          WindowInteropHelper wndHelper=newWindowInteropHelper(this);

          IntPtr  wpfHwnd=wndHelper.Handle;

}

 

2.修改窗体属性：窗体风格

privatevoidWindow_Loaded(object sender,RoutedEventArgs e)

{

     WindowInteropHelper wndHelper=newWindowInteropHelper(this);

    int exStyle=(int)GetWindowLong(wndHelper.Handle,(int)GetWindowLongFields.GWL_EXSTYLE);

     exStyle |=(int)ExtendedWindowStyles.WS_EX_TOOLWINDOW;

      SetWindowLong(wndHelper.Handle,(int)GetWindowLongFields.GWL_EXSTYLE,(IntPtr)exStyle);

}

 

函数定义：

    #region Window styles
    [Flags]
    publicenumExtendedWindowStyles
    {
        // ...
        WS_EX_TOOLWINDOW = 0x00000080,
        // ...
    }

    publicenumGetWindowLongFields
    {
        // ...
        GWL_EXSTYLE = (-20),
        // ...
    }

    [DllImport("user32.dll")]
    publicstaticexternIntPtrGetWindowLong(IntPtr hWnd,int nIndex);

    publicstaticIntPtrSetWindowLong(IntPtr hWnd,int nIndex,IntPtr dwNewLong)
    {
        int error=0;
        IntPtr result=IntPtr.Zero;
        // Win32 SetWindowLong doesn't clear error on success
        SetLastError(0);

        if(IntPtr.Size==4)
        {
            // use SetWindowLong
            Int32 tempResult=IntSetWindowLong(hWnd, nIndex,IntPtrToInt32(dwNewLong));
            error = Marshal.GetLastWin32Error();
            result = newIntPtr(tempResult);
        }
        else
        {
            // use SetWindowLongPtr
            result = IntSetWindowLongPtr(hWnd, nIndex, dwNewLong);
            error = Marshal.GetLastWin32Error();
        }

        if((result==IntPtr.Zero)&&(error!=0))
        {
            thrownewSystem.ComponentModel.Win32Exception(error);
        }

        return result;
    }

    [DllImport("user32.dll",EntryPoint="SetWindowLongPtr",SetLastError=true)]
    privatestaticexternIntPtrIntSetWindowLongPtr(IntPtr hWnd,int nIndex,IntPtr dwNewLong);

    [DllImport("user32.dll",EntryPoint="SetWindowLong",SetLastError=true)]
    privatestaticexternInt32IntSetWindowLong(IntPtr hWnd,int nIndex,Int32 dwNewLong);

    privatestaticintIntPtrToInt32(IntPtr intPtr)
    {
        returnunchecked((int)intPtr.ToInt64());
    }

    [DllImport("kernel32.dll",EntryPoint="SetLastError")]
    publicstaticexternvoidSetLastError(int dwErrorCode);
    #endregion

 

转载网址：http://stackoverflow.com/questions/357076/best-way-to-hide-a-window-from-the-alt-tab-program-switcher