IScreenDisplay.RotateStart Method

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*

Product Availability

Remarks

Call RotateStart to initiate rotating the display.  The required point parameter specifies the starting point of the rotation.  Call RotateMoveTo next to specify the rotation destination point, a rotation angle is calculated based on these two points.

The typical sequence for using the rotate methods is as follows:

• OnMouseDown - RotateStart
• OnMouseMove - RotateMoveTo
• OnMouseMove - RotateTimer
• OnMouseUp - RotateStop

See TrackRotate for an alternative rotating approach.

See Also

IScreenDisplay Interface | IScreenDisplay.RotateStop Method | IScreenDisplay.RotateStart Method | IScreenDisplay.RotateMoveTo Method | IDisplayTransformation.Rotation Property | IScreenDisplay.RotateTimer Method