imaging in openGL

I am quite new to this openGL programming and i would like to know if i can get some codes for obtaining an image input from the user and then extracting pixel information from the image as according to the pixel pointed by the user thru a mouse click.

can any pls help me out on this ??
thanx :slight_smile:

Do you want the user to be able to load a picture and then select a point on it ???

yes, u got it right…the user should be able to load a pic from his computer or a cd and then choose a point on it…then,the pixel info has to be extracted by our program with respect to the point clicked by the like brightness,color and texture should be obtained by the program.