Introduction

Language Structure

IB Statements

File System

Comet 32 Runtime

Index

Metafiles Overview

Metafiles provide a facility for improving the performance of graphical functions by collecting GDI functions into a memory cache and then passing the block to COSW in a single write. This technique dramatically improves the performance of graphical presentations, especially those that are using a remote CometAnywhere session.

In addition, metafiles can be given an optional name so that they can be saved to a disk file on the machine running COSW. These saved metafiles can them be recalled at a later time with a single command eliminating the sometimes lengthy process of sending the metafile to COSW each time the functions are to be performed.

By default, un-named metafiles are automatically created when a program issues GDI functions to the QCRT driver. This behavior may be changed with the (AutoMetafile = Mode) command. Named and un-named metafiles are automatically transferred and executed when a non-GDI function is performed or an (ExecuteMetafile) command is issued.

Metafile mnemonics include: