/// <summary>
/// Starts the app, asynchronously.
/// </summary>
/// <returns>A task that will complete when the app exits</returns>
public Task Start()
{
Task pumpTask = MessagePump.Start();
var ret = pumpTask.ContinueWith((t) =>
{
ExitInternal();
});
if (SetFocusOnStart)
{
MessagePump.QueueAction(() => { FocusManager.TryMoveFocus(); });
}
MessagePump.QueueAction(() =>
{
if (_current != null)
{
throw new NotSupportedException("An application is already running on this thread.");
}
// ensures that the current app is set on the message pump thread
_current = this;
});
Paint();
return(ret);
}
/// <summary>
/// Queues up a request to paint the app. The system will dedupe multiple paint requests when there are multiple in the pump's work queue
/// </summary>
public void Paint()
{
MessagePump.QueueAction(new PaintMessage(PaintInternal));
}