C++模拟键盘消息

实现功能：在现有DLL程序中向特定的EXE窗口中发送模拟键盘的消息
　　　　  使用API根据窗口标题递归查找特定的窗口句柄，之后模拟调用。

注意：keybd_event函数不能在VS下使用，所以用SendInput代替使用：

 int SelfFindWindows(HWND hMainWnd, char* lpName, BYTE keyvalue)
 {
     HWND hChildWnd = GetWindow(hMainWnd, GW_CHILD); 

     while (hChildWnd != NULL)
     {
         char lpChildString[] ={};
         GetWindowText(hChildWnd, lpChildString, sizeof(lpChildString)); 

         if (strstr(lpChildString, lpName))
         {
             SetForegroundWindow(hChildWnd);
             SetFocus(hChildWnd); 

             /*
             keybd_event(keyvalue, 0, 0, 0);
             keybd_event(keyvalue, 0, KEYEVENTF_KEYUP, 0);
             */
             INPUT input[];
             memset(input, , sizeof(input));
             //按下 向下方向键
             input[].ki.wVk = keyvalue;
             input[].type = INPUT_KEYBOARD;
             //松开 向下方向键
             input[].ki.wVk = keyvalue;
             input[].type = INPUT_KEYBOARD;
             input[].ki.dwFlags = KEYEVENTF_KEYUP;
             //该函数合成键盘事件和鼠标事件，用来模拟鼠标或者键盘操作。事件将被插入在鼠标或者键盘处理队列里面
             SendInput(, input, sizeof(INPUT));
             return ;
         } 

         if (GetWindow(hChildWnd, GW_CHILD))
         {
             if (SelfFindWindows(hChildWnd, lpName, keyvalue))
             {
                 return ;
             }
         }
     else
         hChildWnd = GetWindow(hChildWnd, GW_HWNDNEXT);
     } 

     return ;
 } 

 int SendKeyEventToEXE()
 {
     HWND hDesk = GetDesktopWindow();
     HWND hWnd = GetWindow(hDesk, GW_CHILD); 

     while (hWnd != NULL)
     {
         char lpString[] ={};
         GetWindowText(hWnd, lpString, sizeof(lpString)); 

         if (strstr(lpString, "Foxit Reader"))
         {
             SelfFindWindows(hWnd, "Reader", VK_NEXT);    

             return ;
         } 

         hWnd = GetWindow(hWnd, GW_HWNDNEXT);
     }
     return ;
 }

 附录：

虚拟键码VK值大全(Virtual-Key_Codes)：

http://wenku.baidu.com/link?url=cH9r3Ycv2dGlYWjds56q4W-UsDCUgdvrJD3RuW9LZ3812jHqxnyXEZhW4aiAHbZLAxGa-UUgvbh_m3pHeGO5slLDjHHlUZJPF4VXX5x4-fm