IsMouseOver when mouse captured

Question

I've got an IsMouseOver trigger on my element. I've also got a drag action happening, whereby another element captures the mouse, and thus the IsMouseOver trigger never happens, yet I explicitly want it to happen on certain elements when I drag over it (mouse captured and all). Is this possible?

Answer 1

I know this was asked years ago, but just in case someone lands here from a search engine (just like me), here is how I solved the problem for myself. Instead of using IsMouseOver property, use hit-testing in your code to determine if mouse is inside your control:

bool IsMouseOverEx = false;

VisualTreeHelper.HitTest(this, d =>
{
  if (d == this) 
  {
    IsMouseOverEx = true;
    return HitTestFilterBehavior.Stop;
  } 
  else 
   return HitTestFilterBehavior.Continue;
}, 
ht => HitTestResultBehavior.Stop, 
new PointHitTestParameters(Mouse.GetPosition(this)));

if (IsMouseOverEx) 
{
  //Do whatever you need in case of MouseOver
}

N.B. If you haven't read the question, note that this method is a workaround for situations where the mouse is "captured" and therefore IsMouseOver property is not working correctly. In normal situations, you should always use IsMouseOver.