L_AnnGetArea

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetArea(hObject, puCount)

Gets the pixel count of the specified annotation object.

Parameters

HANNOBJECT hObject

Handle to the annotation object from which to get the pixel count.

L_SIZE_T *puCount

Address of the variable to be updated with the pixel count.

Returns

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

Comments

The pixel count is the number of pixels contained in a region extracted from the annotation object, without resizing. It is equivalent to calling L_AnnGetRgnHandle with pRgnXForm set to NULL and then getting a pixel count of the resulting region.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

L_INT EXT_CALLBACK AnnGetAreaAnnEnumCallback(HANNOBJECT   hObject, 
                                             L_VOID*       pUserData); 
 
L_INT AnnGetAreaExample(HANNOBJECT hContainer) 
{ 
   L_INT nRet; 
   nRet = L_AnnEnumerate(hContainer, AnnGetAreaAnnEnumCallback, NULL, ANNFLAG_RECURSE|ANNFLAG_SELECTED, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} 
 
L_INT EXT_CALLBACK AnnGetAreaAnnEnumCallback(HANNOBJECT   hObject, 
                                             L_VOID*       pUserData) 
{ 
   UNREFERENCED_PARAMETER(pUserData); 
   L_INT    nRet; 
   L_SIZE_T zCount; 
   L_TCHAR  cs[80]; 
 
   nRet = L_AnnGetArea(hObject, &zCount); 
   if (nRet == SUCCESS) 
   { 
      wsprintf(cs, TEXT("Pixel count = %ld\n"), zCount); 
      MessageBox(NULL, cs, TEXT("Notice"), MB_OK); 
   } 
   else 
   { 
      wsprintf(cs, TEXT("Error #  %d\n"), nRet); 
      MessageBox(NULL, cs, TEXT("Error"), MB_OK); 
   } 
   return SUCCESS; 
} 
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