Ev_Getc - Texas Instruments TI-89 Developer's Manual

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EV_getc

Declaration: USHORT EV_getc (UINT indic , Event * event )
Category(ies): Operating System
Description: Gets next character from keyboard. Puts the calculator into low power
mode until a character is available.
indic
Inputs:
Outputs: event — Return event message containing either a CM_KEY_PRESS or
Returns either a character number or zero (0) if the cursor blink timer timed
out.
Assumptions: This routine will automatically power down the calculator if a key has not
been pressed after a few minutes.
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: Not applicable.
Example:
Event e;
USHORT ch;
/* Get a keypress from the keyboard */
while ((ch = EV_getc(ST_PAUSE, &e)) == 0)
;
TI-89 / TI-92 Plus Developer Guide
Appendix A: System Routines — Operating System
— ST_IDLE or ST_PAUSE for the kind of busy indicator to display
on the status line while waiting for a keypress.
CM_CURSOR_FLASH command. The event contains the
keyboard modifier keys when the key was pressed.
Not for Distribution Beta Version January 26, 2001