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The system() command provides a range of escape commands to deal with the POS system itself and also to interact with the operating system.

Commnd Overview


Closes the POS and exits the application.
Temporarily suspend the security subsystem controls. This command can only be invoked via quickc mode of operation and otherwise ignored. You cannot use this command generally to bypass security
Acts as if the user had pressed the minimize button to iconify the application.
Causes the POS to pause/sleep for NNN milliseconds. This command should not be used except on testing environments.
Alter the priority of the POS against the list of Windows applications running on the system. The value of NNN can be low, normal or high
Display a visible wait cursor to the user, which is typically an hourglass. This can be used during known long operations, although use of this command is discouraged as it may interfere with POS handling of wait cursors.

To start displaying a wait cursor use the command system(1wait1) and to return to the normal cursor use system(1wait0)

Display an interactive screen where POS Commands can be manually entered
Restart the POS application, or calling application if possible. The value N supplies additional command line options for the program. As the POS is hosted by other programs, this command relies on support from the intiating program and may not work in all environments.
Process the quickcode NNN. A quickcode is a shortform to a number of "subroutines" that can provide PosCommands or scripts.

NNN can either be the keyword "enter" or an actual Quickcode value. Only numeric quickcodes can be executed with this command.

If the quickcode NNN can followed by ",silent" to operate with minimal operator interaction or ",verbose" to have maximum operator interaction. This serves solely as a hint to the Quickcode routine as to level of interaction with the user.

Not documented for customer use at this time.
Prepare and call the Windows API ShellExecuteEx(). This allows the POS to start external applications.

NNN is a list of the following optional keywords

All Others
All other unhandled POS Commands are passed to the Windows API CreateProcess() as the lpCommandLine parameter.


The setting PoscBlock.system can be used to disable the use of the system() command


Display a interactive screen to allow a user to enter a QuickCode


Execute Quickcode 123, and request verbose mode


Invoke notepad to edit a file

	system(shell,file(notepad) param(abc.txt))