OpenEuphoria

Re: Treeview Rant !

• Posted by euman at bellsouth.net Apr 24, 2002
• 404 views

Bingo Derek,

LPNMTVKEYDOWN lpnmtvkd = reinterpret_cast<LPNMTVKEYDOWN>(lpNMHDR); 

if(lpnmtvkd->wVKey == VK_TAB) 
{ 
    bool bShiftDown = (GetKeyState(VK_SHIFT) < 0) ? true : false; 
    if(bShiftDown) 
        MessageBox(m_hWnd, "<SHIFT>+<TAB> was pressed", "Msg", MB_OK); 
} 

I got this reply from microsoft.public.win32.programmer.ui - newsgroup

Thanks,
Euman

----- Original Message ----- 
From: "Derek Parnell" <ddparnell at bigpond.com>
To: "EUforum" <EUforum at topica.com>
Sent: Wednesday, April 24, 2002 5:19 PM
Subject: RE: Treeview Rant !


> 
> 
> euman at bellsouth.net wrote:
> > Thanks Derek either I dont understand your responce or
> > you misinterpreted mine.
> > 
> > 25 is never a returned value in vKey = peek(lParam + 12)
> > 
> > If I hold down the shift + tab keys at the same time only
> > the tab key or '9' is returned.
> > 
> > I might need to use HKM_SETHOTKEY as a work around
> > 
> 
> My fault. I guess I totally misunderstood your problem.
> 
> When you wrote "works really good" I assumed that the code example was 
> working to your satisfaction and that you were asking a hypothetical 
> question.
> 
> Anyhow, if the TreeView notifications don't give you the state of the 
> shift keys, you might have to consider calling either "GetAsyncKeyState" 
> or "GetKeyState" , or maybe even "GetLastInputInfo" to find out if the 
> shift key(s) are down or up.
> ----
> Derek.
> 
> > ----- Original Message ----- 
> > From: "Derek Parnell" <ddparnell at bigpond.com>
> > To: "EUforum" <EUforum at topica.com>
> > Sent: Wednesday, April 24, 2002 1:59 AM
> > Subject: RE: Treeview Rant !
> > 
> > 
> > > euman at bellsouth.net wrote:
> > > > Hello all,
> > > > 
> > > > I found what I consider to be a bug in the Treeview control
> > > > 
> > > > consider this bit of code. ->
> > > > 
> > > > elsif iMsg = TVN_KEYDOWN then
> > > >        vKey = peek(lParam + 12) --struct tagTVKEYDOWN (WORD wVKey)
> > > >        if vKey = 9 then                                  
> > > >           SetFocus(futurecontrol) 
> > > >        elsif vKey = 25 then  -- should be shift+tab    
> > > >           SetFocus(previouscontrol)                             
> > > >        end if
> > > > end if
> > > > 
> > > > works really good but what if someone wanted to reverse the taborder 
> > > > direction
> > > > for focus purposes? 
> > > > 
> > > > shift+tab "or"  shift = 16 + tab = 9  should be vKey = 25
> > > > but this control doesnt handle this in the right way thus returning vKey
> > > >
> > > > 
> > > > = 9
> > > > 
> > > > you cant go backward from a Treeview control, unless someone can provide
> > > >
> > > > 
> > > > a
> > > > work around...
> > > > 
> > > 
> > > This one way you might like to try:
> > >  
> > >   if StandardTabbing then
> > >       ForwardTab = 9
> > >       BackwardTab = 25
> > >   else
> > >       ForwardTab = 25
> > >       BackwardTab = 9
> > >   end if
> > > 
> > >  . . . 
> > > 
> > >  elsif iMsg = TVN_KEYDOWN then
> > >         vKey = peek(lParam + 12) --struct tagTVKEYDOWN (WORD wVKey)
> > >         if vKey = ForwardTab then                                  
> > >            SetFocus(futurecontrol) 
> > >         elsif vKey = BackwardTab then  -- should be shift+tab    
> > >            SetFocus(previouscontrol)                             
> > >         end if
> > >  end if
> > > 
> > > -------------
> > > This hightlights the problems of too much hard-coding.
> > > 
> > > -----
> > > Derek.
> > 
> > 
> 
> 
>