L_SetBitmapMemoryInfo

#include "l_bitmap.h"

L_LTKRN_API L_INT L_SetBitmapMemoryInfo(pBitmap, uMemory, uTileSize, uTotalTiles, uConvTiles, uMaxTileViews, uTileViews, uFlags)

pBITMAPHANDLE pBitmap;

pointer to the bitmap handle

L_UINT uMemory;

memory type to set

L_SSIZE_T 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.
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. Possible values are one or an OR-ed combination of the following:
  Value Meaning
  SETMEM_MEMORY [0x0001] uMemory is valid
  SETMEM_TILESIZE [0x0002] uTileSize is valid
  SETMEM_TOTALTILES [0x0004] uTotalTiles is valid
  SETMEM_CONVTILES [0x0008] uConvTiles is valid
  SETMEM_MAXTILEVIEWS [0x0010] uMaxTileViews is valid
  SETMEM_TILEVIEWS [0x0020] uTileViews is valid

Comment

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.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

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_SetMemoryThresholds, L_GetMemoryThresholds, L_GetBitmapMemoryInfo, L_SetTempDirectory, L_GetTempDirectory

Topics:

Memory Storage Types for Bitmaps

 

Raster Image Functions: Creating and Deleting Images

Example

L_INT SetBitmapMemoryInfoExample(pBITMAPHANDLE pBitmap) 
{ 
   L_INT nRet; 
   // change the tiled bitmap so is can use as many cache buffers as possible:  
   nRet = L_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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