SetWindowsHookEx，在按下鼠標按鈕時執行代碼

Question

所以我用SetWindowsHookEx()做了一個全局熱鍵。我想要它做的是當我按下鼠標右鍵時，它應該一次又一次地執行一些代碼。問題是，如果我按下鼠標右鍵，它只會執行一次。

這是我的回調函數：

private static IntPtr ButtonHookCallback(int nCode, IntPtr wParam, IntPtr lParam) 
    { 

     if (nCode >= 0) 
     { 
      if (wParam == (IntPtr)WM_RBUTTONDOWN) 
      { 
       _m.rtbLog.AppendText("Right mouse button was clicked \n"); 
      } 

      else if (wParam == (IntPtr)WM_LBUTTONDOWN) 
      { 
       _m.rtbLog.AppendText("Left mouse button was clicked \n"); 
      } 




     } 

     return CallNextHookEx(MainWindow._hookId, nCode, wParam, lParam); 
    } 

Answer 1

我不能確切地判斷什麼是你的意圖，但猜你需要結合WM_RBUTTONDOWN和WM_RBUTTONUP達到你想要的東西。而WM_RBUTTONDOWN，開始一個循環做一些事情，而WM_RBUTTONUP，停止做。

private static IntPtr ButtonHookCallback(int nCode, IntPtr wParam, IntPtr lParam) 
{ 

    if (nCode >= 0) 
    { 
     if (wParam == (IntPtr)WM_RBUTTONDOWN) 
     { 
      Start(); 
     } 

     else if (wParam == (IntPtr)WM_RBUTTONUP) 
     { 
      Stop(); 
     } 
    } 

    return CallNextHookEx(MainWindow._hookId, nCode, wParam, lParam); 
} 

private static void Satrt() 
{ 
    _toStop = false; 

    while (true) 
    { 
     if (_toStop) 
     { 
      _toStop = false; 
      return; 
     } 

     DoTask(); 
    } 
} 

private static void Stop() 
{ 
    _toStop = true; 
} 

private static void DoTask() 
{ 
    // do something 
} 

private static bool _toStop;