glutReshapeWindow man page
glutReshapeWindow — Request changing the size of the current window
OpenGLUT - window
glutReshapeWindow(int width, int height);
Requested width of the current window
Requested height of the current window
The glutReshapeWindow() function adjusts the width and height of the
, if it is an onscreen top-level or subwindow. Subwindows are typically resized and repositioned in response to window resize events.
The window system may delay or even alter your request. Use the glutReshapeFunc() callback registration for the window if you want
If you try to make a subwindow smaller than its parent, the parent will not grow to accomodate the child.
Add support for offscreen windows.
glutInit(3) glutInitWindowSize(3) glutReshapeFunc(3) glutCreateSubWindow(3)
glutFullScreen(3), glutInitWindowSize(3), glutReshapeFunc(3).