#7 Exception in MouseController.OnUse()

[Pete Davis]

I have created a GridTester class derived from
ControlTester for a custom grid we have that's derived
from the Syncfusion GridControl.

I have a ClickCell() method that is trying to call

base.MouseControler().Click(Point)

This calls down to MouseController.MouseController
(ControlTester) and then on to MouseCntroler.OnUse()
which appears to be throwing a Win32Exception at the
Win32.BlockUse() call.

In my test code, for the TestFixtureSetUp method, I'm
instantiating the form, showing it, and then creating the
control tester, passing the grid control name and the
form object.

My GridTesterClass does nothing in the constructor and
in the ClickCell, the only thing it does is call the
base.MouseController().Click(Point) as described above,
so there's no other stuff going on that I can find.