C++ 如何在c++；用低级键盘程序？

我需要重新映射一些键，比如Left Alt，但我只是禁用了它，所以禁用Left Alt的代码如下所示：

LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if (nCode == HC_ACTION)
    {
        KBDLLHOOKSTRUCT* p = (KBDLLHOOKSTRUCT*) lParam;
        if (p->vkCode == VK_LMENU) return 1;            
    }
    return CallNextHookEx(hHook, nCode, wParam, lParam);
}

因此，我尝试将Left Alt重新映射到Left Ctrl，并使用类似于

keybd_event

和

sendmagesa

的函数，但没有得到任何结果

LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if (nCode == HC_ACTION)
    {
        KBDLLHOOKSTRUCT* p = (KBDLLHOOKSTRUCT*) lParam;
        if (p->vkCode == VK_LMENU)
        {
            keybd_event(VK_CONTROL, 0, 0, 0);
            // or use this is sameSendMessageA(0, WM_KEYUP, VK_CONTROL, 0);
        }   
    }
    return CallNextHookEx(hHook, nCode, wParam, lParam);
}

如何将左Alt重新映射到左Ctrl

这是一种将Alt重新映射到Ctrl的方法，效果非常好。不要忘记默认参数 如果不定义wParam，请切换回alt可能只是我的计算机，请尝试一下

include iostream
include windows.h

using namespace std;

HHOOK hHook = 0;

LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if (nCode == HC_ACTION)
    {
        KBDLLHOOKSTRUCT* p = (KBDLLHOOKSTRUCT*) lParam;
        if (p->vkCode == VK_LMENU) // VK_LMENU = ALT key
        {
           switch (wParam){

            case WM_SYSKEYDOWN :{ // use SYSKEYDOWN
                cout << "Key down" << endl;

                keybd_event(VK_LCONTROL, 0x1D, KEYEVENTF_EXTENDEDKEY | 0, 0 );
            break;
            }
            case WM_KEYUP: // use regular keyup
             {
                cout << "Key up" << endl;

                keybd_event( VK_LCONTROL, 0x1D, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
                return 1;

            break;
             }
            default:
                wParam = WM_SYSKEYDOWN; // if you do not specify it changes back to alt
                break;
           }
            return 1;
        }
    }
    return CallNextHookEx(hHook, nCode, wParam, lParam);
}
int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nCmdShow)
{

   hHook = SetWindowsHookEx(WH_KEYBOARD_LL, &LowLevelKeyboardProc, hThisInstance, NULL);
    if (hHook == NULL)
    {
        cout << "Error" << endl;
        return 1;
    }

    MSG messages;

    while (GetMessage (&messages, NULL, 0, 0))
    {
        TranslateMessage(&messages);
        DispatchMessage(&messages);
    }

    return messages.wParam;
}

包含iostream
包括windows.h
使用名称空间std；
HHOOK HHOOK=0；
LRESULT回调LowLevelKeyboardProc（int-nCode、WPARAM-WPARAM、LPARAM-LPARAM）
{
如果（nCode==HC\U动作）
{
KBDLLHOOKSTRUCT*p=（KBDLLHOOKSTRUCT*）lParam；
如果（p->vkCode==VK\u LMENU）//VK\u LMENU=ALT键
{
交换机（wParam）{
案例WM_SYSKEYDOWN:{//使用SYSKEYDOWN
库特