I'm currently writing an OpenGL renderer and am part-way through writing some classes for enumerating display adaptors, devices and modes for use in drop-down lists.
I'm using EnumDisplayDevices to get the adaptors and then EnumDisplaySettings for each device, giving me bpp, width, height and refresh rate. However I'm not sure how to find out which modes are available full-screen (there doesn't appear to be a flag for it in the DEVMODE structure). Can I assume all modes listed can in-principle be instantiated full-screen?
As a follow up question, is this approach to device enumeration generally the best way of getting the required information on Windows?
OpenGL has not this distinction between windowed and fullscreen mode. If you want an OpenGL program to be fullscreen you just set the window to be toplevel, borderless, without decoration, stay on top and maximum size.