Trait gtk4::subclass::gl_area::GLAreaImplExt

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pub trait GLAreaImplExt: Sealed + ObjectSubclass {
    // Provided methods
    fn parent_create_context(&self) -> Option<GLContext> { ... }
    fn parent_render(&self, context: &GLContext) -> Propagation { ... }
    fn parent_resize(&self, width: i32, height: i32) { ... }
}