키 로거 응용 프로그램은 Win32 Hooks과 같은 메커니즘을 사용합니다. 특히 WH_KEYBOARD
후크를 설정해야합니다.
자신 만의 키보드 드라이버를 만드는 것처럼 움직이는 고급 기술이 있지만 출발 후크는 좋은 선택입니다.
편집 : 후크 절차가 어떻게 생겼는지 생각해 보려면 개인 유틸리티에서 조각을 게시하십시오.
// ...
thehook = SetWindowsHookEx(WH_KEYBOARD_LL, hook_proc, hwnd, 0);
// ...
/**
*
* wParam, one of the: WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP
lParam: pointer to a KBDLLHOOKSTRUCT structure
(*) "The hook procedure should process a message in less time than the
data entry specified in the LowLevelHooksTimeout value in the following registry key:
HKEY_CURRENT_USER\Control Panel\Desktop
The value is in milliseconds. If the hook procedure does not
return during this interval, the system will pass the message to the next hook."
*
*/
LRESULT CALLBACK
hook_proc(int code, WPARAM wParam, LPARAM lParam)
{
static long ctrl_cnt = 0;
static bool mmode = false;
static DWORD time;
KBDLLHOOKSTRUCT* kbd = (KBDLLHOOKSTRUCT*)lParam;
if ( code < 0
|| (kbd->flags & 0x10) // ignore injected events
) return CallNextHookEx(thehook, code, wParam, lParam);
long ret = 1; // by default I swallow the keys
if ( mmode ) { // macro mode is ON
if ( WM_KEYDOWN == wParam )
PostMessage(mainwnd, WM_MCR_ACCUM, kbd->vkCode, 0);
if ( WM_KEYUP == wParam )
switch (kbd->vkCode) {
case VK_ESCAPE:
mmode = false;
keys.removeall();
PostMessage(mainwnd, WM_MCR_HIDE, 0, 0);
break;
case VK_RETURN:
PostMessage(mainwnd, WM_MCR_EXEC, 0, 0);
break;
case VK_LCONTROL:
mmode = false;
PostMessage(mainwnd, WM_MCR_HIDE, 0, 0);
PostMessage(mainwnd, WM_MCR_EXEC, 0, 0);
break;
}
/* Which non printable keys allow passing? */
switch(kbd->vkCode) {
case VK_LCONTROL:
case VK_CAPITAL:
case VK_LSHIFT:
case VK_RSHIFT:
ret = CallNextHookEx(thehook, code, wParam, lParam);
}
}
else { // macro mode is OFF
/* Ctrl pressed */
if ( kbd->vkCode == VK_LCONTROL && WM_KEYDOWN == wParam ) {
ctrl_cnt = 1;
time = kbd->time;
}
/* Prevent ctrl combinations to activate macro mode */
if ( kbd->vkCode != VK_LCONTROL )
ctrl_cnt = 0;
/* Ctrl released */
if ( ctrl_cnt == 1 && WM_KEYUP == wParam ) {
if ( kbd->time - time > 40 ) {
mmode = true;
PostMessage(mainwnd, WM_MCR_SHOW, 0, 0);
}
}
ret = CallNextHookEx(thehook, code, wParam, lParam); // let it pass
}
return ret;
}
다른 프로그램의 HINSTANCE를 어떻게 얻습니까? –
@ MatoušVrba, 당신은 다른 프로그램의 핸들을 얻을 필요가 없습니다. –
그래, 이제 알았어, 고마워! –