L_PutBitmapRowCompressed (original) (raw)

Summary

Puts one or more rows of 1-bit compressed data from a buffer to a bitmap that is maintained in its compressed format.

Syntax

#include "l_bitmap.h"

L_LTKRN_API L_INT L_PutBitmapRowCompressed(pBitmap, pWorkBuffer, pRunBuffer, nRow, nLines)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap to copy the rows into.

L_UCHAR* pWorkBuffer

NULL or a pointer to an optional work buffer. Allocating the work buffer speeds processing if you call this function more than once, because if you do not allocate a work buffer, the function allocates and frees a temporary buffer each time it is called. The size of this buffer should be the same as the bitmap handle's BytesPerLine field.

L_UINT16* pRunBuffer

Pointer to the input buffer, which contains 1-bit compressed image data.

L_UINT nRow

Number of the first row to update.

L_UINT nLines

Number of rows to update.

Returns

Comments

This function is useful for working with 1-bit images that are loaded in their compressed formats for faster loading and display. For more information, refer to Speeding Up 1-Bit Documents.

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.

See Also

Functions

• L_ExpandRow
• L_CompressRow
• L_GetBitmapRowColCompressed
• L_PutBitmapRowColCompressed
• L_GetBitmapRowCompressed

Topics

• Speeding Up 1-Bit Documents

Example

For an example, refer to L_GetBitmapRowCompressed.

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