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
See Implementation
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.