#include "l_bitmap.h"
L_LTIMGCLR_API L_INT L_GetBitmapColorCount(pBitmap, puCount, uFlags)
Gets the number of unique colors in an image.
Pointer to the bitmap handle referencing the bitmap.
Address of the variable to be updated with the number of unique colors.
Reserved for future use. Must be 0.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available in the Document and Medical Imaging toolkits.
This function supports 32-bit grayscale images.
Required DLLs and Libraries
Win32, x64, Linux.
This example displays the number of unique colors in the specified bitmap.
L_INT GetBitmapColorCountExample(pBITMAPHANDLE pBitmap)
{
L_INT nRet;
L_TCHAR szMessage[80]; /* Buffer for the MessageBox string */
L_UINT32 dwColors; /* Number of colors in the bitmap */
/* Get the number of colors in the bitmap */
nRet = L_GetBitmapColorCount(pBitmap, &dwColors, 0);
if(nRet !=SUCCESS)
return nRet;
/* Display the result in a message */
wsprintf( szMessage, TEXT("The bitmap has %ld colors"), dwColors );
MessageBox (NULL, szMessage, MAKE_IMAGE_PATH(TEXT("Notice")), MB_OK);
return SUCCESS;
}
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