L_SwapColors
#include "l_bitmap.h"
L_LTIMGCLR_API L_INT L_SwapColors(pBitmap, nFlags)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_INT nFlags; |
/* flag */ |
Swaps the specified color channels.
Parameter |
Description |
|
pBitmap |
Pointer to the bitmap handle that references the bitmap in which to swap the specified color channels. |
|
nFlags |
Flag that indicates which color channels to swap. Possible values are: |
|
|
Value |
Meaning |
|
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. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
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 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.
Required DLLs and Libraries
LTIMGCLR For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Platforms
Windows 2000 / XP/Vista.
See Also
Functions: |
L_ConvertToColoredGray, L_BalanceColors, L_GrayScaleBitmap, L_GrayScalebitmapExt, L_IsGrayScaleBitmap, L_AdjustBitmapTint, L_ColorHalfToneBitmap |
Topics: |
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Example
This example assumes there is a bitmap loaded into Bitmap, which is of type BITMAPHANDLE.
L_INT SwapColorsExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle to hold the loaded image. */ /* Load the bitmap, keeping the bits per pixel of the file */ nRet = L_LoadBitmap (TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\IMAGE1.CMP"), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); if(nRet !=SUCCESS) return nRet; nRet = L_SwapColors(&LeadBitmap, SWAP_RG); if(nRet !=SUCCESS) return nRet; nRet = L_SaveBitmap(TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\Result.BMP"), &LeadBitmap, FILE_BMP, 24, 0, NULL); if(nRet !=SUCCESS) return nRet; //free bitmap if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; }