Re: emacs

[Gerd Moellmann]

Rick Scott <[EMAIL PROTECTED]> writes:

> It seems that XtGrabButton takes an int for the button arg, but
> XtUngrabButton wants a KeyCode for the button arg!!!!! How the hell
> do I map a button int to a button KeyCode!!!!!!

The KeyCode arg might a bug in the man page.  From the Xt sources:

void   XtUngrabButton (widget, button, modifiers)
    Widget      widget;
    unsigned int button;
    Modifiers   modifiers;
{
    WIDGET_TO_APPCON(widget);

    LOCK_APP(app);
    UngrabKeyOrButton(widget, (KeyCode)button, modifiers, POINTER);
    UNLOCK_APP(app);
}

...and UngrabKeyOrButton calls XUngrabButton with the `button'
argument passed to it.

void   UngrabKeyOrButton (widget, keyOrButton, modifiers, isKeyboard)
    Widget      widget;
    int         keyOrButton;
    Modifiers   modifiers;
    Boolean     isKeyboard;
{
    XtServerGrabRec     tempGrab;
    XtPerWidgetInput    pwi;
    
    XtCheckSubclass(widget, coreWidgetClass,
                    "in XtUngrabKey or XtUngrabButton");
    
    /* Build a temporary grab list entry */
    tempGrab.widget = widget;
    tempGrab.modifiers = modifiers;
    tempGrab.keybut = keyOrButton;
    tempGrab.hasExt = False;
    
    LOCK_PROCESS;
    pwi = _XtGetPerWidgetInput(widget, FALSE);
    UNLOCK_PROCESS;
    /*
     * if there is no entry in the context manager then somethings wrong
     */
    if (!pwi)
      {
          XtAppWarningMsg(XtWidgetToApplicationContext(widget),
                       "invalidGrab", "ungrabKeyOrButton", XtCXtToolkitError,
                       "Attempt to remove nonexistent passive grab",
                       (String *)NULL, (Cardinal *)NULL);
          return;
      }

    if (XtIsRealized(widget))
      {
          if (isKeyboard)
            XUngrabKey(widget->core.screen->display,
                       keyOrButton, (unsigned int)modifiers,
                       widget->core.window);
          else
            XUngrabButton(widget->core.screen->display,
                          keyOrButton, (unsigned int)modifiers, 
                          widget->core.window);
      }

   
    /* Delete all entries which are encompassed by the specified grab. */
    DeleteServerGrabFromList(isKeyboard ? &pwi->keyList : &pwi->ptrList,
                             &tempGrab);
}