The IOFOCUS specifier asks if the indicated unit is the active window in a QuickWin application. It takes the following form:
IOFOCUS = iof
iof
Is a scalar default logical variable that is assigned one of the following values:
| .TRUE. | If the specified unit is the active window in a QuickWin application |
| .FALSE. | If the specified unit is not the active window in a QuickWin application |
If unit '*' is specified, the default is .FALSE.; otherwise, the default is .TRUE..
A value of .TRUE. causes a call to FOCUSQQ immediately before any READ, WRITE, or PRINT statement to that window.
If you use this specifier with a non-Windows application, an error occurs.