Creating HotSpots in C#

Question

... Is it possible to create hot-spots in C# so that when the mouse is over a certain area an event gets triggered?

Answer 1

Create a transparent Panel (truly transparent - by setting the WS_EX_TRANSPARENT bit in its extended window style - here's how), put it in the position you want on top of other controls, and handle MouseMove on it.

Answer 2

Your standard From object exposes a OnMouseMove event. Given that you don't have any controls where the hot spots will be, you could just handle the coordinates in that event:

protected override void OnMouseMove(MouseEventArgs mouseEvent) 
{ 
     string X = mouseEvent.X.ToString();
     string Y = mouseEvent.Y.ToString(); 

     //Add code here to match X & Y to your hot spot coordinates.
} 

Answer 3

Add a MouseHover event handler for the control(s) that you want your hotspot over.

Answer 4

You can use WndProc to capture windows messages, or you could use GetCursorPos to get the cursor position on the screen.