경일게임아카데미 프로그래밍반 28기 12일차 수업 (2021. 04. 23) WIN32 API 펜, 색칠, 픽셀 #include HINSTANCE _hInstance; HWND _hWnd; LPCTSTR _lpszClass = TEXT("경일 28기 :-) "); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdParam, int cmdShow) { _hInstance = hInstance; MSG message; WNDCLASS wndClass; wndClass.cbClsExtra = 0; wndClass.cbWn..