void resize(int width, int height);

Resizes the window in the same manner it would be resized by the user. The window will obey its geometry contraints. By default these constraints prevent the window from being resized smaller than the size set with set_size_request() . Regardless of the geometry constraints, a window may not be resized smaller than one pixel by one pixel.

See also: set_geometry_hints() set_size_request()