cnodnarb
Professional Member
Joined: 11 Sep 2002
Posts: 767
Location: Eastman, GA
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 Posted: Sat Jul 04, 2026 7:48 pm Post subject: Built a DLL MS C++ 6.0 |
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Turns off Alt+Tab and Alt+Esc.
| Code: |
LOADLIB vds_remap.dll
%%SUCCESS = @LIB(vds_remap.dll, StartAltTabHook, int:, void:)
wait event
%%VOID = @LIB(vds_remap.dll, StopAltTabHook, void:, void:)
FREELIB vds_remap.dll
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| Code: |
#include "stdafx.h"
#include <windows.h>
// --- VC6 compatibility definitions ---
#ifndef WH_KEYBOARD_LL
#define WH_KEYBOARD_LL 13
#endif
typedef struct tagKBDLLHOOKSTRUCT {
DWORD vkCode;
DWORD scanCode;
DWORD flags;
DWORD time;
DWORD dwExtraInfo;
} KBDLLHOOKSTRUCT, *PKBDLLHOOKSTRUCT;
// -------------------------------------
extern "C" __declspec(dllexport) int StartAltTabHook();
extern "C" __declspec(dllexport) void StopAltTabHook();
HHOOK hKeyboardHook = NULL;
LRESULT CALLBACK KeyboardHookCallback(int nCode, WPARAM wParam, LPARAM lParam) {
if (nCode == HC_ACTION) {
KBDLLHOOKSTRUCT* pKeyBoard = (KBDLLHOOKSTRUCT*)lParam;
// Check if Alt (VK_MENU) is held down
if (GetAsyncKeyState(VK_MENU) & 0x8000) {
// Intercept Alt + Tab OR Alt + Escape
if (pKeyBoard->vkCode == VK_TAB || pKeyBoard->vkCode == VK_ESCAPE) {
return 1; // Drop the keystroke entirely
}
}
}
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
// Called by VDS to turn ON the block
int StartAltTabHook() {
if (hKeyboardHook == NULL) {
hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardHookCallback, GetModuleHandle(NULL), 0);
}
return (hKeyboardHook != NULL) ? 1 : 0;
}
// Called by VDS to turn OFF the block
void StopAltTabHook() {
if (hKeyboardHook != NULL) {
UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = NULL;
}
}
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