L_SetBitmapMemoryInfo

#include "l_bitmap.h"

L_INT EXT_FUNCTION 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_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.

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

Windows 95 / 98 / Me, Windows 2000 / XP, Windows CE.

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

// change the tiled bitmap so is can use as many cache buffers as possible: 
BITMAPHANDLE Bitmap;
L_SetBitmapMemoryInfo
(
   &Bitmap, 
   0, // uMemory
   0, // uTileSize
   0, // uTotalTiles
   0, // uConvTiles
   (L_UINT)-1, // uMaxTileViews, 
   (L_UINT)-1, // uTileViews, 
   SETMEM_MAXTILEVIEWS | SETMEM_TILEVIEWS
);