Mixed Language Programming-C # use native Directx and OpenGL

Extern "C" _ declspec (dllexport) HRESULT InitD3D (HWND hWnd ); Extern "C" _ declspec (dllexport) VOID Render ();

HWND handle = this. button1.Handle; InitD3D (handle ); Private void Draw () { For (;;) { Render (); } }

Extern "C" _ declspec (dllexport) void Init (HWND hWnd ); Extern "C" _ declspec (dllexport) void Render ();   Void Init (HWND hWnd) { Int PixelFormat; Int bits = 16;   HDC = GetDC (hWnd );   Static PIXELFORMATDESCRIPTOR pfd = // pfd Tells Windows How We Want Things To Be { Sizeof (PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor 1, // Version Number PFD_DRAW_TO_WINDOW | // Format Must Support Window PFD_SUPPORT_OPENGL | // Format Must Support OpenGL PFD_DOUBLEBUFFER, // Must Support Double Buffering PFD_TYPE_RGBA, // Request An RGBA Format Bits, // Select Our Color Depth 0, 0, 0, 0, 0, 0, // Color Bits Ignored 0, // No Alpha Buffer 0, // Shift Bit Ignored 0, // No Accumulation Buffer 0, 0, 0, 0, // Accumulation Bits Ignored 16, // 16Bit Z-Buffer (Depth Buffer) 0, // No stencel Buffer 0, // No Auxiliary Buffer PFD_MAIN_PLANE, // Main Drawing Layer 0, // Reserved 0, 0, 0 // Layer Masks Ignored };   PixelFormat = ChoosePixelFormat (hDC, & pfd );   SetPixelFormat (hDC, PixelFormat, & pfd );   HRC = wglCreateContext (hDC ); }   Void Render () { WglMakeCurrent (hDC, hRC );   Draw ();   SwapBuffers (hDC );   WglMakeCurrent (NULL, NULL ); }

Init (this. pictureBox1.Handle );   // Start drawing Var timer = new System. Timers. Timer (); Timer. Interval = 100; Timer. Elapsed + = (tsender, te) => { Render (); }; Timer. AutoReset = true; Timer. Enabled = true;