L_LTIMGCLR_API L_INT L_InvertBitmap(pBitmap, uFlags)
Inverts the colors in the specified bitmap, making it like a photographic negative.
Pointer to the bitmap handle referencing the bitmap to be converted.
Reserved for future use. Must be 0.
|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 data, but if the image has an LUT, the function will work on the LUT.
To use this function with data of image that has LUT:
pBitmap->Flags.UseLUT = FALSE;
pBitmap->Flags.UseLUT = TRUE;
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
This function supports signed data images.
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 in the Document and Medical Imaging 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.
Required DLLs and Libraries
Win32, x64, Linux.
For complete sample code, refer to the CHILD.C module of the DEMO example. This example loads a bitmap and inverts it.
BITMAPHANDLE LeadBitmap; /* Bitmap handle to hold the loaded image. */
/* Load the bitmap, keeping the bits per pixel of the file */
nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("RGSRef.cmp")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
/* Invert the colors of the bitmap */
nRet = L_InvertBitmap(&LeadBitmap, 0);
nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL);
Medical Web Viewer .NET
.NET, Java, Android, and iOS/macOS Assemblies
C API/C++ Class Libraries