Function            inkeydv - get a key, DESQview aware

  Syntax              int inkeydv(boolean wait);

  Prototype in        keyboard.h

  Remarks             inkeydv returns the key code of the key pressed. If
                      no key was pressed (WAIT = FALSE) 0 is returned.
                      This function is similar to getchar() except input
                      is not echoed to the screen and inkeydv will detect
                      any key press (any standard keypress. It cannot
                      distinguish between the grey '+' key and the white
                      '+'. This function is interrupt driven. It will
                      detect ALT combinations, Del, PgUp, function keys,
                      etc., any keyboard INTerrupt accepted keys.)

                      When running under DESQview, inkeydv() will free up
                      time slices while waiting for a keypress. DESQview
                      is detected by the variable _dvmajor not equal to
                      zero. DESQversion() should be invoked sometime
                      before using inkeydv().

  Return value        returns the key code of the key pressed, from 1 to
                      511. If WAIT = FALSE, and no key is pressed, zero
                      is returned.

  See also            keycode.h
                      DESQversion(), getc_match(), getk(), getc_match(),
                      getlogical(), getyn(), inkey(), inkeyc(),
                      inkeycdv(), tocapkey()

  Example             #include <keyboard.h>
                      #include <multihk.h>
                      #include <stdio.h>

                      main()
                      {
                           int c;

                           DESQversion();
                           c = inkeydv(WAIT);
                           printf("Key code # in keycode.h: %d\n", c);
                      }