Chapter 22 Flashcards
What is attach event
The concept of an attached event enables you to add a handler for a particular event to an arbitrary element rather than to an element that actually defines or inherits the event.
What are keyboard events
Key down
Key up
Preview Key down
Preview Key up
What is keyboard focus
It guides which control on UI will get keyboard message
What are mouse events
- Mouse enter
- Mouse leave
- Preview mouse enter
- Preview mouse leave
What is general purpose of Mouse enter and
Mouse leave events
Hover effect
What is event trigger
The event trigger receives events from the Event System and calls registered functions for each event.
What is null brush and transparent brush
If mouse clicked and null brush is used then background element will be hit and if transparent brush is used which is non-null brush then foreground element will be hit.
What getposition function do in mouse
It gives mouse position.
What is delta property in mouse wheel
It tells how much mouse to be moved
What clickcount do
It detects the time between 2 clicks and helps to identify double click.
What is mouse capture
It uses in drap and drop and it says that when a particular button or any element is captured by mouse then all mouse events will be sent to that element.
What is reverse of mouse capture
mouse release
Does some events of stylus and touch screen converts to mouse events
Yes
Does note book allow finger touches maximum
Yes
What are 2 levels in touch
- High level
2. Lower level
