L_PutPixelData - Raster Imaging C API Help

L_PutPixelData

#include "l_bitmap.h"

L_LTKRN_API L_INT L_PutPixelData(pBitmap, pData, nRow, nCol, uBytes)

pBITMAPHANDLE pBitmap;

pointer to the bitmap handle

L_VOID* pData;

pointer to a buffer

L_INT nRow;

row number of the pixel

L_INT nCol;

column number of the pixel

L_SIZE_T uBytes;

size of the buffer

Changes the data of the specified pixel. No transformations are performed on the pixel data.

Parameter

Description

pBitmap

Pointer to the bitmap handle referencing the bitmap.

pData

Pointer to a buffer that contains the pixel data to set. This buffer should be able to store uBytes bytes.

nRow

The row number of the pixel. This is a zero-based value.

nCol

The column number of the pixel. This is a zero-based value.

uBytes

Size of the buffer pointed to by pData. The size should be large enough to contain the data for the pixel. The minimum size can be calculated with the following formula: (pBitmap->BitsPerPixel + 7) / 8.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

The bitmap's memory must be locked when you use this function. Normally, call L_AccessBitmap to lock the memory before starting an operation that uses this function and then call L_ReleaseBitmap when the operation is finished.

This function should be called only for 8, 16, 24, 32, 48 and 64-bit bitmaps. For more information, refer to L_GetPixelData.

Required DLLs and Libraries

LTKRN

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, Linux.

Help Version 20.0.2018.7.30
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