OpenGL flickering?

Question

I have a dll written in c++ to render a scene to a window. If I test with a c++ form everything gets rendered nicely but in c# there's a lot of flickering. Here's the important code: CEngine::CEngine(HWND hWnd) { m_HWnd = hWnd; GetClientRect(hWnd,&m_Rect); m_HDC = GetDC(hWnd); m_Depth = 32; SetupPixelFormat(m_HDC); m_HGLRC = wglCreateContext(m_HDC); wglMakeCurrent(m_HDC,m_HGLRC); SizeOpenGLScreen(m_Rect.left -m_Rect.right,m_Rect.top -m_Rect.bottom); m_Width = m_Rect.left -m_Rect.right; m_Height = m_Rect.top -m_Rect.bottom; CurrentScene = NULL; } And at the end of a render I have: SwapBuffers(m_HDC); How do the code tags work here btw? Thank you!