Capslock keyboard hook

keyhook.cpp

#include <windows.h>

void GenerateKey(int vk, BOOL bExtended);

int main()
{
	GenerateKey('A', FALSE);
	GenerateKey(VK_CAPITAL, TRUE);
	GenerateKey('A', FALSE);

	for (;;) {

		if (GetKeyState(VK_CAPITAL) == TRUE) {

			GenerateKey('Z', TRUE);
			GenerateKey('1', TRUE);
			Sleep(300);

		}

	}

	//mouse_event(MOUSEEVENTF_LEFTUP, 0, 0, 0, 0); }
 

}

void GenerateKey(int vk, BOOL bExtended)
{
	KEYBDINPUT  kb = { 0 };
	INPUT    Input = { 0 };
	// generate down 
	if (bExtended)
		kb.dwFlags = KEYEVENTF_EXTENDEDKEY;
	kb.wVk = vk;
	Input.type = INPUT_KEYBOARD;

	Input.ki = kb;
	::SendInput(1, &Input, sizeof(Input));

	// generate up 
	::ZeroMemory(&kb, sizeof(KEYBDINPUT));
	::ZeroMemory(&Input, sizeof(INPUT));
	kb.dwFlags = KEYEVENTF_KEYUP;
	if (bExtended)
		kb.dwFlags |= KEYEVENTF_EXTENDEDKEY;

	kb.wVk = vk;
	Input.type = INPUT_KEYBOARD;
	Input.ki = kb;
	::SendInput(1, &Input, sizeof(Input));
}