I''m writing a simple game engine in C++ so anways I declare a DC globally like this HDC g_hDC i have a class GameEngine when ever i use g_hDC in a class method the compiler tells me.. C:\PROGRAMS\dd7\GameEngine.cpp(63) : error C2065: ''g_hDC'' : undeclared identifier what''s the matter?? how can it be undeclared if it is global??