Gets the pixel count of the specified annotation object.
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnGetArea(hObject, puCount)
Handle to the annotation object from which to get the pixel count.
Address of the variable to be updated with the pixel count.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
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.
Win32, x64.
L_INT EXT_CALLBACK AnnGetAreaAnnEnumCallback(HANNOBJECT hObject, L_VOID* pUserData);
L_INT AnnGetAreaExample(HANNOBJECT hContainer)
{
return L_AnnEnumerate(hContainer, AnnGetAreaAnnEnumCallback, NULL, ANNFLAG_RECURSE | ANNFLAG_SELECTED, NULL);
}
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("Error # %d\n"), nRet);
_tprintf(_T("%s"), cs);
return nRet;
}
wsprintf(cs, TEXT("Pixel count = %lld\n"), zCount);
_tprintf(_T("%s"), cs);
return SUCCESS;
}
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