//api·Î ¸¸µç ÈÄÅ· ÇÁ·Î½ÃÀú
#include <windows.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK KeyHookProc(int nCode, WPARAM wParam, LPARAM lParam);

HINSTANCE g_hInst;
HWND hWndMain;
LPCTSTR lpszClass=TEXT("noname.txt");
HHOOK hKeyHook;

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdParam, int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst = hInstance;

	WndClass.cbClsExtra = 0;
	WndClass.cbWndExtra = 0;
	WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
	WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	WndClass.hInstance = hInstance;
	WndClass.lpfnWndProc = (WNDPROC)WndProc;
	WndClass.lpszClassName = lpszClass;
	WndClass.lpszMenuName = NULL;
	WndClass.style = CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&WndClass);

	hWnd = CreateWindow(lpszClass, lpszClass, WS_OVERLAPPEDWINDOW,
			CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
			NULL, (HMENU)NULL, hInstance, NULL);
	ShowWindow(hWnd, nCmdShow);
	hWndMain = hWnd;

	while(GetMessage(&Message, 0, 0, 0))
	{
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return Message.wParam;
}

LRESULT CALLBACK KeyHookProc(int nCode, WPARAM wParam, LPARAM lParam)
{
	HDC hdc;
	char str[MAX_PATH];
	RECT rt = {100, 120, 500, 150};
	static int Count = 0;

	if(nCode < 0)
		return CallNextHookEx(hKeyHook, nCode, wParam, lParam);
	hdc = GetDC(hWndMain);
	wsprintf(str, "nCode = %d, wParam = %u, lParam = %08x, Count = %d",
			nCode, wParam, lParam, Count++);
	FillRect(hdc, &rt, (HBRUSH)GetStockObject(WHITE_BRUSH));
	TextOut(hdc, 100, 120, str, strlen(str));
	ReleaseDC(hWndMain, hdc);
	return CallNextHookEx(hKeyHook, nCode, wParam, lParam);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	char mes[] = "Å°º¸µå ÈÅ Å×½ºÆ® ÇÁ·Î±×·¥ÀÌ´Ü´Ù.";

	switch(iMessage)
	{
		case WM_CREATE:
			hKeyHook = SetWindowsHookEx(WH_KEYBOARD, (HOOKPROC)KeyHookProc, NULL, GetCurrentThreadId());
			return 0;
		case WM_PAINT:
			hdc = BeginPaint(hWnd,&ps);
			TextOut(hdc, 100, 100, mes, strlen(mes));
			EndPaint(hWnd, &ps);
			return 0;
		case WM_DESTROY:
			UnhookWindowsHookEx(hKeyHook);
			PostQuitMessage(0);
			return 0;
	}
	return (DefWindowProc(hWnd, iMessage, wParam, lParam));
}