Shows simple text in a popup tip window on creation. This is used by wxSimpleHelpProvider to show popup help. The window automatically destroys itself when the user clicks on it or it loses the focus.
You may also use this class to emulate the tooltips when you need finer control over them than what the standard tooltips provide.
Constructor. The tip is shown immediately the window is constructed.
When the tip window closes itself (which may happen at any moment and unexpectedly to the caller) it may NULL out the pointer pointed to by windowPtr. This is helpful to avoid dereferencing the tip window which had been already closed and deleted.
By default, the tip window disappears when the user clicks the mouse or presses a keyboard key or if it loses focus in any other way - for example because the user switched to another application window.
Additionally, if a non empty rectBound is provided, the tip window will also automatically close if the mouse leaves this area. This is useful to dismiss the tip mouse when the mouse leaves the object it is associated with.