L_LTIMGCLR_API L_INT L_SwapColors(pBitmap, uFlags)
Swaps the specified color channels.
Pointer to the bitmap handle that references the bitmap in which to swap the specified color channels.
Flag that indicates which color channels to swap. Possible values are:
|SWAP_RG||Swap the red and green channels. (Change red to green and green to red.)|
|SWAP_RB||Swap the red and blue channels. (Change red to blue and blue to red.)|
|SWAP_GB||Swap the green and blue channels. (Change green to blue and blue to green.)|
|SWAP_RGBR||Change red to green, green to blue and blue to red.|
|SWAP_RBGR||Change red to blue, blue to green and green to red.|
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
This function changes the bitmap data.
This function can process the whole image or a region of the image.
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.
This example assumes there is a bitmap loaded into Bitmap, which is of type BITMAPHANDLE.
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("cannon.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
nRet = L_SwapColors(&LeadBitmap, SWAP_RG);
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