[英]How to remap keyboard key in c++ with LowLevelKeyboardProc?
I need to remap some of keys like Left Alt but i just disable it so code for disable Left Alt look like this: 我需要重新映射一些像Left Alt这样的键,但我只是禁用它,因此禁用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);
}
So I try to remap Left Alt to Left Ctrl and use function like keybd_event
and SendMessageA
but didn't get nothing. 所以我尝试将Left Alt重新映射到左Ctrl并使用像keybd_event
和SendMessageA
这样的SendMessageA
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);
}
How to remap Left Alt to Left Ctrl ? 如何将Left Alt重新映射到左Ctrl ?
This is a way to remap Alt to Ctrl works great. 这是一种将Alt重新映射到Ctrl的方法很有效。 Don't forget the default parameter switches back to alt if you do not define wParam may just be my computer well give it a try 不要忘记默认参数切换回alt如果你没有定义wParam可能只是我的电脑好试试看
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;
}
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