bool _IsMouseOver(Visual target)
{
// We need to use MouseUtilities to figure out the cursor
// coordinates because, during a drag-drop operation, the WPF
// mechanisms for getting the coordinates behave strangely.
if (target != null)
{
Rect bounds = VisualTreeHelper.GetDescendantBounds(target);
Point mousePos = MouseUtilities.GetMousePosition(target);
return(bounds.Contains(mousePos));
}
else
{
return(false);
}
}
void DraggableListView_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
int index = this.IndexUnderDragCursor;
this.canInitiateDrag = index > -1;
if (this.canInitiateDrag)
{
// Remember the location and index of the ListViewItem the user clicked on for later.
this.ptMouseDown = MouseUtilities.GetMousePosition(listView);
this.indexToSelect = index;
}
else
{
this.ptMouseDown = new Point(-10000, -10000);
this.indexToSelect = -1;
}
}
