hello
i need an opengl function to get data from a serial comport
?..OpenGL is a graphics API…perhaps if you rephrase the question an answer may pop up?
i am working on an opengl project that draw some graphics according on the key pressed in a keypad.
so i need to get the data from the key pad 
Nadia, perhaps it would be best to ask in another forum since reading from the keypad doesnt really have much to do with OpenGL specifically.
i have found a code to draw the shapes when i press any key.
but i want a function to keep each shape in the screen what can i use?
and how can i outputting words from a file into the opengl window?