WPF停止鼠標按下事件獲得應用重點

Question

在的WinForms我用下面的代碼塊被點擊停止應用程序獲得焦點：

private const int WM_MOUSEACTIVATE = 0x0021; 
private const int MA_NOACTIVATEANDEAT = 0x0004; 

protected override void WndProc(ref Message m) 
{ 
    if (m.Msg == WM_MOUSEACTIVATE) 
    { 
     m.Result = (IntPtr)MA_NOACTIVATEANDEAT; 
     return; 
    } 
    base.WndProc(ref m); 
} 

是否有任何替代這在WPF應用程序？我可以使用HwndSource嗎？以下是我迄今爲止（WM_MOUSEACTIVATE不能單獨工作的要求和應用程序仍然獲得焦點）：

protected override void OnSourceInitialized(EventArgs e) 
    { 
     base.OnSourceInitialized(e); 
     HwndSource source = PresentationSource.FromVisual(this) as HwndSource; 
     source.AddHook(WndProc); 
    } 

private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) 
{ 
    // Handle messages... 
    int WM_MOUSEACTIVATE = 0x0021; 
    int WM_LBUTTONDOWN = 0x0201; //513 
    int WM_LBUTTONUP = 0x0202; //514 
    int WM_LBUTTONDBLCLK = 0x0203; //515 
    if (msg == WM_MOUSEACTIVATE || msg == MA_NOACTIVATEANDEAT || msg == WM_LBUTTONDOWN || msg == WM_LBUTTONUP || msg == WM_LBUTTONDBLCLK) 
    { 
     handled = true; 
    } 
    return IntPtr.Zero; 
} 

我怎樣才能得到消息的結果？

Answer 1

通過使用解決：

private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) 
{ 
    // Handle messages... 
    int WM_MOUSEACTIVATE = 0x0021; 
    if (msg == WM_MOUSEACTIVATE) 
    { 
     handled = true; 
     return new IntPtr(MA_NOACTIVATEANDEAT); 
    } 
    return IntPtr.Zero; 
}