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From: mai@qt.ipa.fhg.de (Christoph Mai)
Newsgroups: comp.soft-sys.andrew
Subject: problems with menulists
Message-ID: <9010191054.AA10459@lazy.qt.IPA.FhG.de>
Date: 19 Oct 90 10:55:09 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 53
X-Unparsable-Date: Fri, 19 Oct 90 9:54:08 GMT-1:00

I got the following problem:

In an application I wanted to open a new window with a frame and 
a text/textview inset. 
To add/delete some new menuitems to the textview I used the function
menulist_ChainBeforeML with a 'newmenulist' previously created by
{
    static struct bind_Description Bindings[]={
        {NULL,NULL,0,"Quit",0,0,NULL,NULL},
        {"Insert-Strings",NULL,0,"New Menu Card,Insert Strings",0,0,InsStrings,
        "Insert Strings"},
        NULL
    };
}
and in the Initialize Class function 
{
    struct classinfo *classinfo = class_Load("textview");
    Newmenulist = menulist_New();
    bind_BindList(Bindings,NULL,newmenulist,classinfo);
}	
-------- Now, here is my function ----------------------

void opennewwindow()
{
    struct textview *newtextView;
    struct text *newtext;
    struct frame *frame;
    struct im *newim;

    newtext = text_New();
    newtextView = textview_New();

    view_SetDataObject((struct view *)newtextView,(struct dataobject *)newtext);
    menulist_ChainBeforeML(newtextView->menus,newmenulist,0);
    
    frame = frame_New();
    newIM = im_Create(NULL);

    frame_SetView(frame,newtextView);
    im_SetView(newIM,frame);
}
The new menu card appears in the card stack but the program core dumps
immediately after chosing the new menu item. The other original menu
items of textview don't cause any core dumps !

Is this a wrong way to change menus or what else could be wrong ??

Best regards --- Christoph

____________________________________________________________
Christoph Mai (chm@qt.IPA.FhG.de)
Fraunhofer-Institut f. Produktionstechnik u. Automatisierung
Eierstrasse 46,D-7000 Stuttgart 1