How does Qt on Windows draw exactly? Does it call GDI internal to draw? -


i'm developer on windows , have experiences on winapi programs. far know, there 2 ways draw on windows, call gdi (includes wrapper of gdi gdi+) traditional drawing or call apis dx or opengl draw use gpu. other things qt are? qt calls gdi draw something? or has own way draw directly? want know theory in general.

from looks of it, since qt 4.0 had changed use of gdi , replaced other internals might improve portability, if wish, qt open sourced, may @ code understand qtgui.dll internals.


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