private static void DragSource_PreviewMouseMove(object sender, MouseEventArgs e)
{
if (_isMouseDown && IsDragGesture(e.GetPosition(CurrentDragSourceAdvisor.GetTopContainer())))
{
DragStarted(sender as UIElement);
}
}
private static void DragSource_PreviewMouseMove(object sender, MouseEventArgs e)
{
if (CurrentDragSourceAdvisor != null && e.LeftButton == MouseButtonState.Pressed &&
IsDragGesture(e.GetPosition(CurrentDragSourceAdvisor.GetTopContainer())))
{
DragStarted(sender as UIElement);
}
else
{
Mouse.Capture(null);
}
}
/* ____________________________________________________________________
* Drag Source events
* ____________________________________________________________________
*/
private static void DragSource_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// Make this the new drag source
CurrentDragSourceAdvisor = GetDragSourceAdvisor(sender as DependencyObject);
if (CurrentDragSourceAdvisor.IsDraggable(e.Source as UIElement) == false)
{
return;
}
_draggedElt = e.Source as UIElement;
_dragStartPoint = e.GetPosition(CurrentDragSourceAdvisor.GetTopContainer());
_offsetPoint = e.GetPosition(_draggedElt);
_isMouseDown = true;
}