QBasic 1.1: IOCTL Statement

Explanation

IOCTL transmits a control string to a device driver. IOCTL$ returns current status information from a device driver.

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

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IOCTL [#]filenumber%, string$

IOCTL$([#]filenumber%)

filenumber%	The number of an open device.
string$	The control string sent to the device.
IOCTL control strings and the information returned by IOCTL$ depend on the device driver. See your device-driver documentation for information about IOCTL control strings and what is returned by IOCTL$.