Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
L_CreateMaskFromBitmapRgn
#include "l_bitmap.h"
L_LTDIS_API L_INT L_CreateMaskFromBitmapRgn(pBitmap, pMask, uStructSize)
pBITMAPHANDLE pBitmap; |
/* pointer to the source bitmap handle */ |
pBITMAPHANDLE pMask; |
/* pointer to the destination bitmap handle */ |
L_UINT uStructSize; |
/* size in bytes, of the structure pointed to by pBitmap */ |
Creates a 1-bit mask image from the region that is defined in the source bitmap.
Parameter |
Description |
pBitmap |
Pointer to the bitmap handle referencing the source bitmap, where the region is defined. |
pMask |
Pointer to the bitmap handle referencing the destination bitmap, which will be updated with a 1-bit, black-and-white image, where pixels from the region are white, and all others are black. |
uStructSize |
Size in bytes, of the structure pointed to by pBitmap, for versioning. Use sizeof(BITMAPHANDLE). |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
A bitmap region is an area of interest within a bitmap. A bitmap can have only one region at a time, but the region can be complex, including, for example, multiple noncontiguous shapes. For more information, refer to Creating a Bitmap Region.
Required DLLs and Libraries
LTDIS 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
Win32, x64.
See Also
Functions: |
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Example
This example loads an image, sets a color region using black, and then creates a 1-bit mask image from that bitmap.
L_INT CreateMaskFromBitmapRgnExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle that holds the loaded bitmap */ BITMAPHANDLE MaskBitmap; /* Bitmap handle that holds the mask bitmap */ nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL ); if(nRet != SUCCESS) return nRet; nRet = L_SetBitmapRgnColor (&LeadBitmap, RGB( 0,0,0 ), L_RGN_SET ); if(nRet != SUCCESS) return nRet; nRet = L_CreateMaskFromBitmapRgn(&LeadBitmap, &MaskBitmap, sizeof(BITMAPHANDLE)); if(nRet != SUCCESS) return nRet; nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &MaskBitmap, FILE_BMP, 24, 0, NULL); if(nRet != SUCCESS) return nRet; L_FreeBitmap(&LeadBitmap); L_FreeBitmap(&MaskBitmap); return SUCCESS; }