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LEADTOOLS Raster imaging C++ Class library help

LBitmapSettings::FreeUserMatchTable

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#include "ltwrappr.h"

static L_INT LBitmapSettings::FreeUserMatchTable(pTable)

L_UINT * pTable;

/* pointer to the table */

Frees the table that is used to speed conversion when using a palette that you create.

Parameter

Description

pTable

The pointer to the table.

Returns

SUCCESS

The function was successful.

< 0

An error occurred. Refer to Return Codes.

Comments

This function is used with other functions in the following sequence:

1.

Call LBitmapSettings::CreateUserMatchTable to create the table.

2.

Call LBitmapSettings::SetUserMatchTable to make this the current table. (Having this as a separate function allows you to save tables in files and get the one you need, without creating it again.)

3.

Call LBitmapBase::ColorRes with the CRF_USERPALETTE and CRF_FASTMATCHPALETTE options.

4.

Call LBitmapSettings::FreeUserMatchTable when the table is no longer needed.

The completed table occupies 64K bytes of memory. Creation of the table is a slow, memory-intensive process that is useful only if you are using your own palette more than once. For example, you may want to create the table once, save it to a file, and ship that file with your application.

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:

LBitmapBase::ColorRes, LBitmapSettings::DefaultDithering, LBitmapSettings::CreateUserMatchTable, LBitmapSettings::SetUserMatchTable, Class Members

Topics:

Raster Image Functions: Doing Color Expansion or Reduction

 

Raster Image Functions: Doing Color Space Conversions

 

Raster Image Functions: Palettes

Example

For an example, refer to LBitmapSettings::CreateUserMatchTable.

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