74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/*
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* $Id$
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*/
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/*
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* File......: CTRL.C
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* Author....: Ted Means
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* CIS ID....: 73067,3332
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*
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* This function is an original work by Ted Means and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.4 15 Jul 1993 23:51:28 GLENN
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* Dropped _MK_FP for preferred 0x00400017
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*
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* Rev 1.3 13 Jul 1993 22:20:22 GLENN
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* Modified to use _MK_FP for compatibility in protected mode.
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*
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* Rev 1.2 15 Aug 1991 23:08:10 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.1 14 Jun 1991 19:53:40 GLENN
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* Minor edit to file header
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*
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* Rev 1.0 01 Apr 1991 01:02:44 GLENN
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* Nanforum Toolkit
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*
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*
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*/
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/* $DOC$
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* $FUNCNAME$
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* FT_CTRL()
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* $CATEGORY$
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* Keyboard/Mouse
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* $ONELINER$
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* Determine status of the Ctrl key
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* $SYNTAX$
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* FT_CTRL() -> lValue
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* $ARGUMENTS$
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* None
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* $RETURNS$
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* .T. if Ctrl key is pressed, .F. if otherwise.
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* $DESCRIPTION$
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* This function is useful for times you need to know whether or not
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* the Ctrl key is pressed, such as during a MemoEdit().
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* $EXAMPLES$
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* IF FT_CTRL()
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* @24, 0 say "Ctrl"
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* ELSE
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* @24, 0 say " "
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* ENDIF
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* $SEEALSO$
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* FT_CAPLOCK() FT_NUMLOCK() FT_PRTSCR() FT_SHIFT() FT_ALT()
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* $END$
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*/
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#include <hbapi.h>
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HB_FUNC( FT_CTRL )
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{
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#if defined(HB_OS_DOS)
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{
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hb_retl( ( int ) ( ( *( char * ) 0x00400017 ) & 0x4 ) );
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return;
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}
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#endif
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}
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