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creating a menu with openGL

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Hello everybody!
I would like to create a fixed menu with openGL to execute some operations
and i don't khnow how so can you help me please!!!

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What kind of menu ?, OpenGL has no concept of menus so you can do it in pretty much any way you want.

A set of buttons is quite different from a nested dropdown menu.

Buttons are generally just textured quads. (If you want a mouse over effect on buttons i suggest storing both images in a single texture and just shift the coordinates when the mouse is over the button).

a dropdown menu is far more complicated and i'd recommend using a GUI library such as CEGUI for that.

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Can any buddy give me the tutorial of opengl for xcode.. b/c I am new in using the opengl in xcode.. thnkx

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