video mode (windows 98/ NT)


i have build an application with OpenGL and Visual C++. it works well, if i use high-color (16-Bit) mode. if i change the mode, the views are black.

where’s the problem ?



Lot’s of possibilities:
Have you analyzed the return values (errors?) you get from the calls during pixelformat selection?
Does your video card support OpenGL in TrueColor?
Does you video board have enough memory to enable HW OpenGL?
Have you tried a lower screen resolution like 640*480?

If you mean 256 colors with mode change, then you need a palette.