LEADTOOLS Raster Imaging C DLL Help > Function References > L_AnnGetArea |
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnGetArea(hObject, puCount)
HANNOBJECT hObject; |
/* handle to the annotation object */ |
L_SIZE_T *puCount; |
/* address of a variable to be updated */ |
Gets the pixel count of the specified annotation object.
Parameter |
Description |
hObject |
Handle to the annotation object from which to get the pixel count. |
puCount |
Address of the variable to be updated with the pixel count. |
Returns
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
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
Functions: |
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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; }