Shield Win, Alt + Tab, Ctrl + ESC key of low-level keyboard hook

xiaoxiao2021-03-06  40

Callback:

LResult Callback LowlevelKeyboardProc (int Ncode, WPARAM WPARAM, LPARAM LPARAM)

{

Bool featkeyStroke = false;

PkbdllhookStruct P = null;

IF (ncode == hc_action)

{

P = (pkbdllhookingtruct) lparam;

Switch (WPARAM)

{

Case WM_KeyDown:

// Backdoor to User Information

IF (p-> vkcode == vk_f8)

{

:: MessageBox (Null, "Let's make Things Better and better! / N", "HQ Tech", MB_OK;

Break;

}

Case WM_SYSKEYDOWN:

Case WM_KEYUP:

Case WM_SYSKEYUP:

FeatKeystroke = (P-> vkcode == vk_lwin) || (P-> vkcode == vk_rwin) || // Shield Win

// Shield Alt Tab

((p-> vkcode == vk_tab) && ((p-> flags & llkhf_altdown)! = 0) ||

// Shield Alt ESC

((P-> vkcode == vk_escape) && ((p-> flags & llkhf_altdown)! = 0) ||

// Shield Ctrl ESC

((p-> vkcode == vk_escape) && ((getKeyState (VK_Control) & 0x8000)! = 0));

Break;

DEFAULT:

Break;

}

}

Return (FeatKeystroke? True: CallNexthookex (Glhhook, ncode, wparam, lparam);

}

Install and unload hooks:

void _stdcall startKeymask ()

{

/ / Install the hook

GLHHOOK = SETWINDOWSHOKEX (Wh_Keyboard_LL, LowlevelKeyboardProc, GLHINSTANCE, 0);

}

void _stdcall stopkeymask ()

{

// Uninstall the hook

IF (GLHHOOK! = NULL)

UnHookWindowshookex (Glhhook);

}

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