L_ExpandRow
#include "l_bitmap.h"
L_INT EXT_FUNCTION L_ExpandRow(pRunBuffer, pBuffer, nCol, nWidth)
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/* pointer to the input buffer */ | |
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/* pointer to the output buffer */ | |
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L_UINT nCol; |
/* column offset within the row to process */ |
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L_INT nWidth; |
/* number of pixels to process */ |
Does buffer-to-buffer decompression of RLE-compressed 1-bit image data. Use this function to process all or part of a single line of image data. This function is available in the Document/Medical Toolkits.
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Parameter |
Description |
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PRunBuffer |
Pointer to the input buffer containing 1-bit compressed image data. |
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PBuffer |
Pointer to the output buffer, which is to be filled with 1-bit image data. Use integer math to calculate the required size of this buffer as follows: bytes required = ( nWidth + 7) / 8. |
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NCol |
Column offset within the row to be processed. The function skips this many pixels before it begins processing. |
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NWidth |
The number of pixels to process. |
Returns
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> 0 |
The number of pixels processed. |
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< 1 |
An error occurred. Refer to Return Codes. |
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
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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
Windows 95 / 98 / Me, Windows 2000 / XP, Windows CE.
See Also
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Functions: |
L_CompressRow, L_CompressRows, L_ExpandRows, L_GetBitmapRowColCompressed, L_PutBitmapRowColCompressed, L_GetBitmapRowCompressed, L_PutBitmapRowCompressed |
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Topics: |
Example
For an example,refer to L_PutBitmapRowColCompressed.