Trait gtk4::subclass::gl_area::GLAreaImplExt   
source · pub trait GLAreaImplExt: Sealed + ObjectSubclass {
    // Provided methods
    fn parent_create_context(&self) -> Option<GLContext> { ... }
    fn parent_render(&self, context: &GLContext) -> bool { ... }
    fn parent_resize(&self, width: i32, height: i32) { ... }
}