nConvTiles

This is used when working with a tiled image. It represents the maximum number of tiles that will reside in conventional memory at any time. The tiles that do not reside in conventional memory will be on disk. (Default is –100 = all tiles are in memory)

If the value is >0, then this parameter represents the number of tiles.

If 0, then all the tiles in a tiled bitmap will be disk tiles.

If the value is < 0, then this parameter represents the percentage of tiles that will reside in memory.

Values less than -100 are not allowed.

This parameter is ignored if uFlags does not contain MEM_CONVTILES.