use glutDisplayFunc(display) in my class

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Hi all
I use a class to write opengl program in C++,I want to use glutDisplayFunc(display)
and this my display function:

C#

void graphic::dispaly()
{
    glClear(GL_COLOR_BUFFER_BIT);
    //call a function
    glutSwapBuffers();
}

Now ,I face this error:
3 IntelliSense: argument of type "void (graphic::*)()" is incompatible with parameter of type "void (*)()"

I googled and fount this solation:
http://stackoverflow.com/questions/3589422/using-opengl-glutdisplayfunc-within-class[^]

but I cant understand it!,please help me to use this function correctly .
(Sorry for my bad English:))

Posted 29-Oct-13 3:30am

Mohammad Sharify

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Richard MacCutchan 29-Oct-13 10:01am

OK, having looked at the SO link, it is clear that your callback routine must be a static function.

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nv3 · Accepted Answer · 2013-10-29T04:26:00

Solution 1

As Richard said, declare the display function in your graphic class as:

C++

class graphic
{
   ...
   static void display ();
};

and things should work.

Posted 29-Oct-13 4:26am

nv3

Comments

Mohammad Sharify 29-Oct-13 23:48pm

tnx,a lot! it solved ;)