It's actually one of the very few types that is platform-dependent. Each display plugin defines its own implementation, and only the display plugin is allowed to access it.
So you'll find them in code/plugins/display/<platform>/orxDisplay.c|cpp|m
So if you look at the GLFW implementation, here's the orxBITMAP structure defined there:
Comments
the orxBITMAP type is supposed to be opaque.
It's actually one of the very few types that is platform-dependent. Each display plugin defines its own implementation, and only the display plugin is allowed to access it.
So you'll find them in code/plugins/display/<platform>/orxDisplay.c|cpp|m
So if you look at the GLFW implementation, here's the orxBITMAP structure defined there: