Re: Activate/Deactivate Toolbar button(s)

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 24 May 2007 08:44:17 -0700

Message-ID:

<90E5730E-3828-4BEF-B33E-9284FDFA6E5A@microsoft.com>

Hi divya,

You shouldn't have to do anything special besides checking to see if any
documents are open. You could use code like:

POSITION pos = GetFirstDocTemplatePosition();
while (pos) {
    CDocTemplate* pTemplate = (CDocTemplate*)GetNextDocTemplate(pos);
    POSITION pos2 = pTemplate->GetFirstDocPosition();
    while (pos2) {
         CDocument *pDocument;
         if ((pDocument=pTemplate->GetNextDoc(pos2)) != NULL) {
              csPath = pDocument->GetPathName();
              if(!csPath.IsEmpty()) {
                   CString cs;
                   cs.Format(_T("This doc open: %s\n"),csPath);
                   AfxMessagebox(cs);
         }
     }
   }
}

Obviously, you woudln't want display the name, but you get the idea. Or you
could just have the doc class set a flag in your main app code when a doc is
opened or closed and just keep track of a count.

Tom

"divya_rathore_@gmail.com" <divyarathore@gmail.com> wrote in message
news:1180018311.941983.220740@q69g2000hsb.googlegroups.com...

On May 24, 7:11 pm, "Tom Serface" <tom.nos...@camaswood.com> wrote:

I am using ON_UPDATE_COMMAND_UI_RANGE and have been able to implement
it nicely in the MainFrame.
My question was.. where to send the message to the Toolbar to check
for opened docs and disable buttons if none are open.

OnClose of ChildFrame is too early for this as that particular doc/
view is still open. That's why I was wondering if PostNcDestroy is an
appropriate time for this.

Secondly, what message is to be sent? How do I send CCmdUI* as
argument?