How To Overriding Default Right-Click Behavior in Editor Window

MORE INFORMATION

The editor is normally invoked with the MODIFY COMMAND <filename>, MODIFY FILE <filename>, or MODIFY MEMO <memo fieldname> command. In a run-time application, you are most likely to use MODIFY FILE or MODIFY MEMO.

The way to override the default right-click behavior involves associating a command or procedure with an ON KEY LABEL RIGHTCLICK, and issuing a WAIT command to remove the right-click and cause the default menu not to display.

Overriding the Default Menu with No Menu

The following code sample demonstrates how to make no menu appear with the right-click:

   LOCAL lcFileName

   * Name a temporary text file.
   lcFileName = SYS(3)+'.txt'

   * Store its contents to the clipboard.
   _CLIPTEXT = "Line 1"+CHR(13)+"Line 2"+CHR(13)
   KEYBOARD '{ctrl+v}{ctrl+w}'

   * Paste the contents into the file, then save and close the file.
   MODIFY FILE (lcFileName)

   * Set the RIGHTMOUSE behavior to the WAIT command to remove right-click.
   ON KEY LABEL RIGHTMOUSE WAIT ""
   MODIFY FILE (lcFileName)
   DELETE FILE (lcFileName)

   * Reset the default RIGHTMOUSE behavior
   ON KEY LABEL RIGHTMOUSE
				

Overriding Default Menu With A Custom Menu

The following code sample demonstrates how to make a custom menu appear with the right-click. The custom menu contains the normal edit menu functionality of Undo, Redo, Copy, Paste, Cut, and Select All.

   LOCAL lcFileName

   * Name a temporary text file.
   lcFileName = SYS(3)+'.txt'

   * Store its contents to the clipboard.
   _CLIPTEXT = "Line 1"+CHR(13)+"Line 2"+CHR(13)
   KEYB '{ctrl+v}{ctrl+w}'

   * Paste the contents into the file, then save and close it.
   MODIFY FILE (lcFileName)

   * Set the RIGHTMOUSE behavior.
   ON KEY LABEL RIGHTMOUSE MenuFunction()
   MODIFY FILE (lcFileName)
   DELETE FILE (lcFileName)

   * Reset the default RIGHTMOUSE behavior.
   ON KEY LABEL RIGHTMOUSE

   FUNCTION MenuFunction()
      WAIT ""  && This removes the right-click.
      IF POPUP('shortcut')
         * Let's make sure we don't display the menu twice.
         DEACTIVATE POPUP shortcut
      ELSE
         DEFINE POPUP shortcut shortcut RELATIVE
         DEFINE BAR _MED_UNDO OF shortcut PROMPT "\<Undo" ;
            MESSAGE "Undoes the last command or action"
         DEFINE BAR _MED_REDO OF shortcut PROMPT "Re\<do" ;
            MESSAGE "Repeats the last command or action"
         DEFINE BAR 3 OF shortcut PROMPT "\-"
         DEFINE BAR _MED_COPY OF shortcut PROMPT "\<Copy" ;
            MESSAGE "Copies the selection onto the Clipboard"
         DEFINE BAR _MED_PASTE OF shortcut PROMPT "\<Paste" ;
            MESSAGE "Pastes the contents of the Clipboard"
         DEFINE BAR _MED_CUT OF shortcut PROMPT "Cu\<t" ;
            MESSAGE "Removes the selection and places it on the Clipboard"
         DEFINE BAR _MED_SLCTA OF shortcut PROMPT "Se\<lect All" ;
            MESSAGE "Selects all text or items in the current window"
      ENDIF
      * Activate it where we clicked.
      ACTIVATE POPUP shortcut AT MROW(),MCOL()
      * Deactivate it after we click outside of the menu.
      DEACTIVATE POPUP shortcut
      RETURN
   ENDFUNC