Sets the major and minor version of OpenGL to request.
Setting major and minor to zero will use the default values.
The #GdkGLContext must not be realized or made current prior to calling this function.
the major version to request
the minor version to request
Sets the major and minor version of OpenGL to request.
Setting major and minor to zero will use the default values.
The #GdkGLContext must not be realized or made current prior to calling this function.