#include "l_bitmap.h"
L_LTKRN_API L_INT L_ClearBitmap(pBitmap)
Sets all bits to 0 in the specified bitmap, making it a black bitmap.
Pointer to the bitmap handle referencing the bitmap to clear.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
Regions are not supported on the Windows CE platform.
Required DLLs and Libraries
Win32, x64, Linux.
For complete sample code, refer to the COMPCB example. This example loads a bitmap and clears it.
L_INT ClearBitmapExample(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 (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
if(nRet != SUCCESS)
return nRet;
/* Clear the bitmap */
nRet = L_ClearBitmap(&LeadBitmap);
if(nRet != SUCCESS)
return nRet;
nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL);
if(nRet != SUCCESS)
return nRet;
if(LeadBitmap.Flags.Allocated)
L_FreeBitmap(&LeadBitmap);
return SUCCESS;
}
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