null on error
Window.createGlContext
gdk.glcontext.GLContext createGlContext()Creates a new #GdkGLContext matching the framebuffer format to the visual of the #GdkWindow. The context is disconnected from any particular window or surface.
If the creation of the #GdkGLContext failed, error will be set.
Before using the returned #GdkGLContext, you will need to call [gdk.glcontext.GLContext.makeCurrent] or [gdk.glcontext.GLContext.realize].
Returns
the newly created #GdkGLContext, or
Throws
[ErrorWrap]