#include "ltwrappr.h"

virtual L_INT LAnnHotSpot::GetRotateAngle(pdAngle)

L_DOUBLE *pdAngle;

pointer to a double that returns the rotate angle

Gets the rotation angle for an annotation object.




Pointer to a double variable to be updated with the rotation angle.



The function was successful.

< 1

An error occurred. Refer to Return Codes.


Call this function to get the rotation angle for a particular annotation object.

The angle is in radians, and uses the following convention.

The possible range of rotate values is (-Pi) ... (Pi)

A rotation in the clockwise direction is considered a positive rotation.

A rotation in the counter-clockwise direction is considered a negative rotation.

For example, if a rectangle is rotated 90 degrees in the counter clockwise direction, this function will get (-PI/2) for the rotation angle. If a rectangle is rotated 90 degrees in the clockwise direction, this function will get PI/2 for the rotation angle. If a rectangle is rotated 270 degrees in the counter clockwise direction, this is equivalent to 90 degrees in the clockwise direction so the rotation value returned is PI/2.

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64.

See Also


Class Members


Annotation Functions: Object Properties


Implementing Annotations


Automated User Interface for Annotations


Annotation Functions: Creating and Deleting Annotations


Types of Annotations


Annotation Functions: Implementing Custom Annotations


Annotation Functions: Creating Custom Annotations


Fixed Annotations


Minimizing Flicker With Double Buffering


Annotation Functions: Working with the Toolbar


// This examples displays the rotation angle of the HotSpot annotation object in radians and degrees. 
L_INT LAnnHotSpot_GetRotateAngleExample(LAnnHotSpot * pLHotSpot) 
   L_INT nRet; 
   L_DOUBLE dAngle; 
   L_TCHAR   szMsg[200]; 
   nRet = pLHotSpot->GetRotateAngle(&dAngle); 
   if (nRet == SUCCESS) 
      wsprintf(szMsg, TEXT("Angle of rotation:  Radians[%lf]  Degrees[%f]\n"), 
      dAngle *180 / 3.1415926535 
      MessageBox(NULL, szMsg, TEXT(""), MB_OK); 
      return nRet; 
   return SUCCESS; 

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