In windows 98 SE. I create “fullscreen” window with WS_EX_APPWINDOW flag. Then I choose pixel format and create OpenGL context. After window is closed I release OGL context. Very often I 1-1000 access violations in GDI32.dll. I even download some examples from internet and they operate the same way and I get the same bug. What I do wrong?
I used GeForce FX and Radeon 9600XT video cards. And the last drivers.
This might best stands in the Windows specific forum.
You should release your GL context and the device context (hdc) before calling DestroyWindow.
Your windows class should have the CS_OWNDC style. This way you can get the device context once, immediately after creating the windows, and keep it around until you close it.
Order matters. Initialization:
1)CreateWindow(Ex)
2)GetDC
3)ChoosePixelFormat, SetPixelFormat
4)wglCreateContext
5)wglMakeCurrent
Shutdown:
1)wglMakeCurrent(0,0)
2)wglDeleteContext
3)ReleaseDC
4)DestroyWindow