Fetch the current surface size.
GLVIEW_API int glview_get_size(unsigned int *width, unsigned int *height)
If this parameter is non-null then it will be set to the current width of the surface.
If this parameter is non-null then it will be set to the current height of the surface.
Query the surface to determine the size of the current surface.
GLVIEW_SUCCESS upon success, GLVIEW_FAILURE otherwise, with errno set to the following:
- EPERM: glview_intialize() was not called prior to glview_get_size() .