I'm trying to detect the TabControlItem clicked on by handling the TabControl.MouseUpEvent and then checking TabControl.HitTest(). It never succeeds because it appears that there needs to be a conversion from the MouseUpEvent x,y units to the one that HitTest() uses.

In the TabManager sample, I added the event handler

private void TabControl_MouseUpEvent(object sender, AxXtremeSuiteControls._DTabControlEvents_MouseUpEvent e)
{
    XtremeSuiteControls.TabControlItem item = TabControl.HitTest(e.x, e.y);
    if (item != null)
    {
     ...
    }
}

HitTest() always return null here. The e.y value from the MouseUpEvent is in the range of 0-16.

I tried the same code in VB, and it works. But the MouseUpEvent in VB returns y values of 0-300.

My tests with C++ show the same problem as C#.