virtual L_INT LBitmap::Invert(uFlags = 0)
Inverts the colors in the class object's bitmap, making it like a photographic negative.
Reserved for future use. Must be 0.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function can also be used to invert the color of a 1-bit image, making the black white and the white black.
This function originally works on the image source data, but if the image has a LUT, the function will work on the LUT.
To use this function with source data for an image that has LUT:
Set the LBitmapBase::EnableUseLUT to FALSE.
Call this function.
After applying the function, set the LBitmapBase::EnableUseLUT back to TRUE.
myBitmap.EnableUseLUT(FALSE);
myBitmap.Invert();
myBitmap.EnableUseLUT(TRUE);
To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.
This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.
Win32, x64.
L_INT LBitmap__InvertExample()
{
L_INT nRet;
LBitmap LeadBitmap;
nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")), 0,ORDER_BGR);
if(nRet !=SUCCESS)
return nRet;
nRet =LeadBitmap.Invert();
if(nRet !=SUCCESS)
return nRet;
return SUCCESS;
}
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