Gets the total number of pixels in the bitmap region.
#include "l_bitmap.h"
L_LTDIS_API L_INT L_GetBitmapRgnArea(pBitmap, puArea)
Pointer to the bitmap handle referencing the bitmap that has the region.
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. |
Before calling this function, you must declare an L_UINT32 variable for the pixel count. You can then pass the address of the variable in the puArea
parameter, and the function will update the variable.
Win32, x64, Linux.
For a complete sample code, refer to the FEATURE3 example.
This example displays the area of the current bitmap region.
L_INT GetBitmapRgnAreaExample(pBITMAPHANDLE pBitmap)
{
L_INT nRet;
L_TCHAR szMessage[80]; /* Buffer for the MessageBox string */
L_SIZE_T zArea; /* Number of pixels in the region */
/* Get the number of pixels in the region */
nRet = L_GetBitmapRgnArea(pBitmap, &zArea);
if (nRet != SUCCESS)
return nRet;
/* Display the result in a message */
wsprintf(szMessage, TEXT("NOTE: The region area is %ld pixels"), (int)zArea);
_tprintf(_T("%s"), szMessage);
return SUCCESS;
}
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