L_AnnGetAngle

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetAngle(hObject, pdAngle)

Gets the angle of the Protractor object in the object's unit of measurement, set by L_AnnSetProtractorOptions.

Parameters

HANNOBJECT hObject

Handle to the annotation object.

L_DOUBLE *pdAngle

Address of a variable to be updated with the angle of the protractor object specified in hObject.

Returns

Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.

Comments

This function is only valid for Protractor annotation objects (ANNOBJECT_PROTRACTOR).

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

L_INT EXT_CALLBACK annAngleCallback(HANNOBJECT  hObject, 
                                    L_VOID*      pUserData); 
 
L_INT AnnGetAngleExample(HANNOBJECT         hContainer//, /* Container annotation object */ 
                                         /*ANNENUMCALLBACK    annAngleCallback*/) 
{ 
   L_INT nRet; 
   nRet = L_AnnEnumerate(hContainer, annAngleCallback, NULL, ANNFLAG_RECURSE|ANNFLAG_NOTCONTAINER, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} 
 
L_INT EXT_CALLBACK annAngleCallback(HANNOBJECT  hObject, 
                                    L_VOID*      pUserData) 
{ 
   UNREFERENCED_PARAMETER(pUserData); 
   L_INT    nRet; 
   L_DOUBLE dAngle; 
   L_UINT   Type; 
   L_TCHAR  cs[256]; 
   L_SIZE_T uAbbrevLen = 0; 
   L_TCHAR *pszAbbrev = NULL; 
 
   nRet = L_AnnGetType(hObject, &Type); 
   if (nRet == SUCCESS) 
   { 
      switch (Type) 
      { 
      case ANNOBJECT_PROTRACTOR: 
         uAbbrevLen = 0; 
         pszAbbrev = NULL; 
         L_AnnGetAngle(hObject, &dAngle); 
         L_AnnGetProtractorOptions(hObject, NULL, NULL, &uAbbrevLen, NULL, NULL, NULL); 
 
         pszAbbrev = (L_TCHAR *)malloc( uAbbrevLen * (sizeof(L_TCHAR)+1)); 
         L_AnnGetProtractorOptions(hObject, NULL, NULL, &uAbbrevLen, pszAbbrev, NULL, NULL); 
 
         _stprintf_s(cs, TEXT("The angle is %f %s.\n"), dAngle, pszAbbrev); 
         MessageBox(NULL, cs, TEXT("Results"), MB_OK); 
          
         free(pszAbbrev); 
         break; 
      default: 
         MessageBox(NULL, TEXT("This object is not a protractor."), TEXT(""), MB_OK); 
      } 
   } 
   return SUCCESS; 
} 
Help Version 20.0.2019.9.22
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C API Help