ThemedAboutDialogHandler

Remarks: This object is typically a single static instance that is used by the platform handlers to call private or protected methods on the widget, such as protected event methods e.g. protected virtual void OnClick(EventArgs e)

Remarks: Some frameworks (e.g. gtk, monomac, ios, android) keep track of references in a way that leak objects when there is a circular reference between the control and the handler. This is the case when registering events from the control to a method implemented in the handler. This instance can be used to connect the objects together using a weak reference to the handler, allowing controls to be garbage collected.

Remarks: Implementors should override this method to handle any events that the widget supports. Ensure to call the base class' implementation if the event is not one the specific widget supports, so the base class' events can be handled as well.

Remarks: This creates the weak connector to use for event registration and other purposes.

Remarks: Override this to create the control instance for the handler. This makes it easy to extend existing handler implementations with different control implementations. Some platforms (e.g. Mac) require subclasses to implement/override functionality.

Remarks: Implementors can override this for events that hold onto something worth giving back while they are attached, such as a system wide hook. Most events cost nothing to leave attached for the life of the widget, which is why the default is to refuse. Only reached for events whose remove accessor uses PropertyStore.RemoveHandlerEvent(string, Delegate), and never for an event that is attached because the widget overrides its On[Event] method.

Remarks: To handle disposal logic, use the WidgetHandler<TWidget>.Dispose(bool) method.

Remarks: Most events are late bound by this method. Instead of wiring all events, this will be called with an event string that is defined by the control. This is called automatically when attaching to events, but must be called manually when users of the control only override the event's On... method. Override the WidgetHandler<TWidget>.AttachEvent(string) to attach your events

Remarks: Override this to initialize any of the platform objects. This is called in the widget constructor, after all of the widget's constructor code has been called.

Remarks: Override this to perform any logic after the handler is fully initialized, but before returning from the construction of the widget. This by default applies the any styles for the handler.

Remarks: Override WidgetHandler<TWidget>.DetachEvent(string) rather than this, the same way WidgetHandler<TWidget>.AttachEvent(string) is overridden rather than WidgetHandler<TWidget>.HandleEvent(string, bool).