Navigation: ABC Library Reference > FileManager > FileManager Methods >====== RestoreBuffer (restore a previously saved record buffer)  ====== |    |
RestoreBuffer( buffer id [, restore] )
| RestoreBuffer | Restores previously saved record buffer contents. |
| buffer id | An integer constant, variable, EQUATE, or expression that identifies the buffer contents to restore–this is a value returned by the SaveBuffer method. |
| restore | An integer constant, variable, EQUATE, or expression that indicates whether to restore the managed file's buffer contents, or simply DISPOSE of the specified buffer. A value of one (1 or True) updates the file's Buffer; a value of zero (0 or False) does not update the file's Buffer. If omitted, restore defaults to True. |
The RestoreBuffer method restores record buffer contents to the managed file's record buffer (the Buffer property). RestoreBuffer restores values previously saved by the SaveBuffer method, including MEMO fields.
Implementation:
The RestoreBuffer method releases memory allocated by the SaveBuffer method. Therefore, to prevent a memory leak, each call to SaveBuffer should be paired with a corresponding call to RestoreBuffer.
The RestoreBuffer method retrieves and DISPOSEs the specified contents from the Buffers property.
Example:
FileManager.RestoreFile PROCEDURE(*USHORT Id)
CODE
IF ~SELF.UseFile()
SELF.Saved.Id = Id
GET(SELF.Saved,SELF.Saved.Id)
ASSERT(~ERRORCODE())
IF SELF.Saved.Key &= NULL
RESET(SELF.File,SELF.Saved.Pos)
ELSE
RESET(SELF.Saved.Key,SELF.Saved.Pos)
END
IF SELF.Saved.WHeld
HOLD(SELF.File)
END
IF SELF.Saved.WWatch
WATCH(SELF.File)
END
NEXT(SELF.File)
SELF.RestoreBuffer(SELF.Saved.Buffer)
DELETE(SELF.Saved)
Id = 0
END
See Also: Buffer, Buffers, SaveBuffer