CameraActor: Set Cursor busy if looking for cam.
IMAQ cam init can take quite a while (LabView issue). Hence set the "busy" cursor before and release afterwards. This would also prevent pressing the Cam OnOff button too early.
IMAQ cam init can take quite a while (LabView issue). Hence set the "busy" cursor before and release afterwards. This would also prevent pressing the Cam OnOff button too early.
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