Rockwell Automation 2708-NBD VBASIC Language Development Kit - Manual (Page 74)

Appendix C
Application Library Subroutines
C–6
Note: In EnvPC, dashes are returned, not slashes (MM-DD-YYYY).
CL1 Clears the top line of the display and homes cursor.
CL2 Clears line 2 and left justifies cursor.
SUB CL1
SUB CL2
PC1 Prints a string centered on line 1.
PC2 Prints a string centered on line 2.
PC1 s$
SUB PC1 ( s$ )
SUB PC2 ( s$ )
ReadFlush Flushes the keyboard buffer.
This clears the keyboard buffer of any pending keystrokes.
ReadFlush
SUB ReadFlush
ReadStrField% Input a string on the display
The string$ contents are placed on the screen and may be edited by the user.
This default may be inhibited using NODEFAULT.
The attr% is made by adding the following:
AUTOEXIT Causes the field to be auto exited . . . . .
BLANKPAD Selects blank padding instead of underscores . . . . .
SECURE The field is displayed as asterisks . . . . . . . .
NOEDIT Displayed but cannot be edited . . . . . . . .
NOCLEAR Inhibits auto clear on input . . . . . .
NOCURSOR Inhibits display of cursor during edit . . . .
FORMEXIT Allow arrows to exit the field entry . . . . .
NODEFAULT Do not use the default value in the string . . . .
USETABLE Use CHARTABLE$ to restrict legal characters . . . . .
The fieldlength% is in characters. The startingchar% specifies the offset from
the beginning of the field at which editing is to start, this begins at 0. Note
that the global EXITOFFSET% is set to the cursor position at exit. These
may be used to restart a read which was interrupted by some event.