LMemoryFile::SetBitmapMemoryInfo - Raster imaging C++ Class Library Help

LMemoryFile::SetBitmapMemoryInfo

#include "ltwrappr.h"

static L_INT LMemoryFile:: SetBitmapMemoryInfo(pBitmap, uMemory, uTileSize, uTotalTiles, uConvTiles, uMaxTileViews, uTileViews, uFlags)

static L_INT LMemoryFile::SetBitmapMemoryInfo(plBitmap, uMemory, uTileSize, uTotalTiles, uConvTiles, uMaxTileViews, uTileViews, uFlags)

pBITMAPHANDLE pBitmap;

pointer to the bitmap handle

LBitmapBase *plBitmap;

pointer to a bitmap class object

L_UINT uMemory;

memory type to set

L_UINT uTileSize;

tile size to set

L_UINT uTotalTiles;

number of tiles to set

L_UINT uConvTiles;

number of conventional tiles to set

L_UINT uMaxTileViews;

maximum number of disk tile views to set

L_UINT uTileViews;

number of actual disk tile views to set

L_UINT uFlags;

flags that indicate which parameters are valid

Sets the bitmap allocation parameters.

Parameter Description
pBitmap Pointer to the bitmap handle that references the bitmap for which to set the allocation parameters. It cannot be NULL and it must be allocated.
plBitmap Pointer to the LBitmapBase object that references the bitmap for which to get the memory information. This bitmap must be allocated and this pointer cannot be NULL.
uMemory Value that represents the new memory type for the bitmap. This parameter is used only if SETMEM_MEMORY is set in uFlags.
uTileSize Value that represents the new size for the tile. This parameter is used only if SETMEM_TILESIZE is set in uFlags.
uTotalTiles Value that represents the new number of tiles. This parameter is used only if SETMEM_TOTALTILES is set in uFlags.
uConvTiles Value that represents the new number of conventional tiles. This parameter is used only if SETMEM_CONVTILES is set in uFlags.
uMaxTileViews Value that represents the new maximum number of swap buffers for the disk tiles. This parameter is used only if SETMEM_MAXTILEVIEWS is set in uFlags.
uTileViews Value that represents the new number of swap buffers for the disk tiles. This parameter is used only if SETMEM_TILEVIEWS is set in uFlags.
uFlags Flags that indicate which parameters should be considered valid. Use one or more values. You can use a bitwise OR ( | ) to combine values. Possible values are:
  Value Meaning
  SETMEM_MEMORY [0x0001] The uMemory parameter is valid
  SETMEM_TILESIZE [0x0002] The uTileSize parameter is valid
  SETMEM_TOTALTILES [0x0004] The uTotalTiles parameter is valid
  SETMEM_CONVTILES [0x0008] The uConvTiles parameter is valid
  SETMEM_MAXTILEVIEWS [0x0010] The uMaxTileViews parameter is valid
  SETMEM_TILEVIEWS [0x0020] The uTileViews parameter is valid

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

If uMemory is valid and is not TYPE_TILED, then the other parameters are ignored. If uMemory is not valid and the bitmap is not tiled, then the other parameters are ignored. This overrides the uFlags parameter

Required DLLs and Libraries

LTFIL

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:

LFileSettings::SetTempDirectory, LFileSettings::GetTempDirectory, Class Members

Topics:

Memory Storage Types for Bitmaps

 

Raster Image Functions: Creating and Deleting Images

Example

// change the tiled bitmap so is can use as many cache buffers as possible:

L_INT LMemoryFile__SetBitmapMemoryInfoExample(LBitmap *pBitmap) 
{ 
   L_INT nRet = 0; 
 
   nRet = LMemoryFile::SetBitmapMemoryInfo( 
                                    pBitmap,  
                                    0, // uMemory 
                                    0, // uTileSize 
                                    0, // uTotalTiles 
                                    0, // uConvTiles 
                                    (L_UINT)-1, // uMaxTileViews,  
                                    (L_UINT)-1, // uTileViews,  
                                    SETMEM_MAXTILEVIEWS | SETMEM_TILEVIEWS 
                                 ); 
 
   if(nRet != SUCCESS) 
      return nRet; 
 
 
   return SUCCESS; 
} 

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