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Monster Media 1993 #2
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CTRL.C
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C/C++ Source or Header
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1993-07-16
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2KB
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69 lines
/*
* File......: CTRL.C
* Author....: Ted Means
* Date......: $Date: 15 Jul 1993 23:51:28 $
* Revision..: $Revision: 1.4 $
* Log file..: $Logfile: C:/nanfor/src/ctrl.c_v $
*
* This function is an original work by Ted Means and is placed in the
* public domain.
*
* Modification history:
* ---------------------
*
* $Log: C:/nanfor/src/ctrl.c_v $
*
* Rev 1.4 15 Jul 1993 23:51:28 GLENN
* Dropped _MK_FP for preferred 0x00400017
*
* Rev 1.3 13 Jul 1993 22:20:22 GLENN
* Modified to use _MK_FP for compatibility in protected mode.
*
* Rev 1.2 15 Aug 1991 23:08:10 GLENN
* Forest Belt proofread/edited/cleaned up doc
*
* Rev 1.1 14 Jun 1991 19:53:40 GLENN
* Minor edit to file header
*
* Rev 1.0 01 Apr 1991 01:02:44 GLENN
* Nanforum Toolkit
*
*
*/
/* $DOC$
* $FUNCNAME$
* FT_CTRL()
* $CATEGORY$
* Keyboard/Mouse
* $ONELINER$
* Determine status of the Ctrl key
* $SYNTAX$
* FT_CTRL() -> lValue
* $ARGUMENTS$
* None
* $RETURNS$
* .T. if Ctrl key is pressed, .F. if otherwise.
* $DESCRIPTION$
* This function is useful for times you need to know whether or not
* the Ctrl key is pressed, such as during a MemoEdit().
* $EXAMPLES$
* IF FT_CTRL()
* @24, 0 say "Ctrl"
* ELSE
* @24, 0 say " "
* ENDIF
* $SEEALSO$
* FT_CAPLOCK() FT_NUMLOCK() FT_PRTSCR() FT_SHIFT() FT_ALT()
* $END$
*/
#include <extend.h>
CLIPPER FT_CTRL(void)
{
_retl( (int) ((*(char *) 0x00400017 ) & 0x4) );
return;
}