My doc states...
The depth parameter selects a pixel bit depth. This value can be 0, 16, 24 or 32 depending on the graphics modes available. A depth of 0 can be used to select 'windowed mode' graphics, while non-0 depths select 'fullscreen' graphics.
The depth parameter selects a pixel bit depth. This value can be 0, 16, 24 or 32 depending on the graphics modes available. A depth of 0 can be used to select 'windowed mode' graphics, while non-0 depths select 'fullscreen' graphics.