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[32] ={0}; 
        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[2];
            memset(input, 0, sizeof(input));
            //按下 向下方向键
            input[0].ki.wVk = keyvalue;
            input[0].type = INPUT_KEYBOARD;    
            //松开 向下方向键
            input[1].ki.wVk = keyvalue;
            input[1].type = INPUT_KEYBOARD;
            input[1].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(2, input, sizeof(INPUT));        
            return 1; 
        } 
        
        if (GetWindow(hChildWnd, GW_CHILD)) 
        { 
            if (SelfFindWindows(hChildWnd, lpName, keyvalue)) 
            { 
                return 1; 
            } 
        } 
    else 
        hChildWnd = GetWindow(hChildWnd, GW_HWNDNEXT); 
    } 

    return 0; 
} 

int SendKeyEventToEXE() 
{ 
    HWND hDesk = GetDesktopWindow(); 
    HWND hWnd = GetWindow(hDesk, GW_CHILD); 
    
    while (hWnd != NULL) 
    {    
        char lpString[32] ={0}; 
        GetWindowText(hWnd, lpString, sizeof(lpString)); 
        
        if (strstr(lpString, "Foxit Reader")) 
        { 
            SelfFindWindows(hWnd, "Reader", VK_NEXT);    
        
            return 1; 
        } 
        
        hWnd = GetWindow(hWnd, GW_HWNDNEXT); 
    } 
    return 0; 
}

 附录：

虚拟键码VK值大全(Virtual-Key_Codes)：

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