I’ve downloaded the demo project here: http://www.codeguru.com/opengl/oglwrapperclass.shtml
and I’m just messing around with it to learn opengl. One thing I did was, I added submenus to draw extra shapes. I’ve defined a global:
int state=0;
I did it such that, when you select that menu, state toggles between 0 and 1 each time you click it. Then in my OnDraw() function, I added this code:
if(state==1)
{
//draw the extra shape
}
but the extra stuff doesn’t draw until I click on the scene and drag the cursor, then when I select the menu again to remove the shape, once again…it doesn’t remove until I click and drag the cursor. What could be causing this??
[This message has been edited by Rajveer (edited 03-28-2002).]
Are you using the glutIdleFunc or glutTimerFunc to make your screen update?
It sounds like you are not telling openGL to update the screen after a mouse event.
Originally posted by Rajveer:
[b]I’ve downloaded the demo project here: http://www.codeguru.com/opengl/oglwrapperclass.shtml
and I’m just messing around with it to learn opengl. One thing I did was, I added submenus to draw extra shapes. I’ve defined a global:
int state=0;
I did it such that, when you select that menu, state toggles between 0 and 1 each time you click it. Then in my OnDraw() function, I added this code:
if(state==1)
{
//draw the extra shape
}
but the extra stuff doesn’t draw until I click on the scene and drag the cursor, then when I select the menu again to remove the shape, once again…it doesn’t remove until I click and drag the cursor. What could be causing this??
[This message has been edited by Rajveer (edited 03-28-2002).][/b]