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Prepares display for rotating. If centerPt is NULL, the center of the visible bounds is used.
[Visual Basic .NET] Public Sub RotateStart ( _ ByVal mousePt As IPoint, _ ByVal centerPt As IPoint _ )
[C#] public void RotateStart ( IPoint mousePt, IPoint centerPt );
[C++]
HRESULT RotateStart(
IPoint* mousePt,
IPoint* centerPt
);
[C++]
Parameters mousePt [in]
mousePt is a parameter of type IPoint* centerPt [in]
centerPt is a parameter of type IPoint*