private void DragndropBorder_MouseDown(object sender, MouseButtonEventArgs e)
{
dragndropInProgress = true;
DragndropBorder.CaptureMouse();
DragndropBorder.MouseMove += DragndropBorder_MouseMove;
dragndropOffset = GetPosition() - e.GetPosition(MainWindow.instance.drawArea);
}
private void DragndropBorder_MouseUp(object sender, MouseButtonEventArgs e)
{
if (!dragndropInProgress)
{
return;
}
dragndropInProgress = false;
DragndropBorder.ReleaseMouseCapture();
DragndropBorder.MouseMove -= DragndropBorder_MouseMove;
}
