rem: WMSetButtonImage(panel->icoaB, NULL);
add: WMSetButtonAltImage(panel->icoaB, NULL);
context: textEditedObserver(void *observerData, WMNotification *notification){    _Panel *panel = (_Panel*)observerData;    switch ((int)WMGetNotificationClientData(notification)) {     case WMReturnTextMovement:	if (WMGetNotificationObject(notification) == panel->icoT)	    WMPerformButtonClick(panel->icoaB);	else	    WMPerformButtonClick(panel->pixaB);	break;     case WMIllegalTextMovement:	if (WMGetNotificationObject(notification) == panel->icoT) {	    WMSetButtonImage(panel->icoaB, NULL);	    WMSetButtonImage(panel->icoaB, NULL);	} else {		    WMSetButtonImage(panel->pixaB, NULL);	    WMSetButtonImage(panel->pixaB, NULL);	}	break;    } }