win32_step_17 - 8BitsCoding/RobotMentor GitHub Wiki

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wchar_t g_time_str[64];
int g_time_len;
HFONT gh_font;

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	if (uMsg == WM_PAINT) {
		PAINTSTRUCT ps;
		HDC h_dc = BeginPaint(hWnd, &ps);

		RECT r;
		GetClientRect(hWnd, &r);

		SetBkMode(h_dc, TRANSPARENT);
		SetTextColor(h_dc, RGB(255, 255, 0));


		HGDIOBJ h_old_font = SelectObject(h_dc, gh_font);

		//TextOut(h_dc, 10, 10, g_time_str, g_time_len);
		DrawText(h_dc, g_time_str, g_time_len, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

		SelectObject(h_dc, h_old_font);
		

		EndPaint(hWnd, &ps);
		return 0;
	}
	else if (uMsg == WM_CREATE) {
		SetTimer(hWnd, 1, 1000, NULL);
		gh_font = CreateFont(80, 0, 0, 0, FW_BOLD, FALSE, FALSE, 0,
			DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
			DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, L"굴림체");
		return 0;
	}
	else if (uMsg == WM_TIMER) {
		if (wParam == 1) {
			SYSTEMTIME cur_time;
			GetLocalTime(&cur_time);
			// GetSystemTime();		// UTC로 시간을 받음 / 우리나라시간 UTC + 9

			g_time_len = wsprintf(g_time_str, L"%02d시 %02d분 %02d초", cur_time.wHour, cur_time.wMinute, cur_time.wSecond);
			InvalidateRect(hWnd, NULL, TRUE);
		}
	}
	else if (uMsg == WM_DESTROY) {
		KillTimer(hWnd, 1);
		DeleteObject(gh_font);
		PostQuitMessage(0);
	}
		

	return DefWindowProc(hWnd, uMsg, wParam, lParam);
}