Tag Archives: FT_SCANCODE()

FT Keyboard-Mouse

Posted on by vivaclipper 
 FT_ALT()         Determine status of the Alt key
 FT_CAPLOCK()     Determine and optionally change the status of CapLock key
 FT_CTRL()        Determine status of the Ctrl key
 FT_LASTKEY()     Force LastKey() to return a programmer-defined value.
 FT_MBUTPRS()     Retrieve button press status
 FT_MBUTREL()     Get mouse button release information
 FT_MCONOFF()     Turn mouse cursur off if in specified region
 FT_MCURSOR()     Set the mouse cursor
 FT_MDBLCLK()     Return true if a double click was detected
 FT_MDEFCRS()     Define the mouse cursor
 FT_MGETCOORD()   Get mouse cursor position (text coord.) and button status
 FT_MGETPAGE()    Get the display page for the mouse pointer
 FT_MGETPOS()     Get mouse cursor position and button status
 FT_MGETSENS()    Get the mouse sensitivity parameters
 FT_MGETX()       Get mouse cursor row position
 FT_MGETY()       Get mouse cursor column position
 FT_MHIDECRS()    Decrement internal mouse cursor flag and hide mouse cursor
 FT_MINIT()       Initialize the mouse driver, vars and return status of mouse
 FT_MINREGION()   Test if the mouse cursor is in the passed region
 FT_MMICKEYS()    Get mickeys
 FT_MRESET()      Reset mouse driver and return status of mouse
 FT_MSETCOORD()   Position the mouse cursor using text screen coordinates
 FT_MSETPAGE()    Set the display page for the mouse pointer
 FT_MSETPOS()     Position the mouse cursor using virtual screen coordinates
 FT_MSETSENS()    Set the mouse sensitivity parameters
 FT_MSHOWCRS()    Increment internal cursor flag and display mouse cursor
 FT_MVERSION()    Get the mouse driver version
 FT_MXLIMIT()     Set vertical bounds of mouse using virtual screen coord.
 FT_MYLIMIT()     Set horiz. bounds of mouse using virtual screen coordinates
 FT_NUMLOCK()     Return status of NumLock key
 FT_PRTSCR()      Enable or disable the Print Screen key
 FT_PUTKEY()      Stuff a keystroke into the keyboard buffer
 FT_SCANCODE()    Wait for keypress and return keyboard scan code
 FT_SETKEYS()     Get array of keys redirected via the SetKey() or SET KEY
 FT_SETRATE()     Set the keyboard delay and repeat rate on PC/AT & PS/2
 FT_SHIFT()       Determine status of shift key
 FT_SINKEY()      Replacement for INKEY() that tests for SET KEY procedures

 

FT_SCANCODE

Posted on by vivaclipper 
FT_SCANCODE()
 Wait for keypress and return keyboard scan code

 Syntax

      FT_SCANCODE() -> cCode

 Arguments

     None

 Returns

     A two-character string, corresponding to the keyboard scan code.

 Description

     FT_SCANCODE() enables you to distinguish the different scancodes
     of similar keys (such as Grey minus versus regular minus), thus
     increasing the number of keys your input routine can recognize.

     It works like INKEY(), in that it waits for a key to be pressed.
     The scan code consists of two bytes, which are returned as a
     two-character string.

     For example, calling FT_SCANCODE() and pressing the Grey-minus
     key will return a two character string:

            CHR(45) + CHR(74)

     LASTKEY() is not updated by FT_SCANCODE(), so don't try to
     test LASTKEY() to see what was pressed during an FT_SCANCODE()
     call.  Simply assign the return value to a variable and test
     that (see the test driver below).

     *  This was adapted from a short C routine posted by John Kaster on
        NANFORUM.  It was written in Clipper to help demonstrate the
        FT_INT86 function of the Nanforum Toolkit.

     This program requires FT_INT86().

 Examples

        cKey := FT_SCANCODE()

      [grey-] returns:  CHR(45) + CHR(74)
      [-]     returns:  CHR(45) + CHR(12)
      [grey+] returns:  CHR(43) + CHR(78)
      [+]     returns:  CHR(43) + CHR(13)

 Source: SCANCODE.PRG

 Author: Glenn Scott (from John Kaster)