Re: problems in creating file dialog in tab control

From:
"lfsym" <clamayi@gmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
2 Aug 2006 09:37:34 -0700
Message-ID:
<1154536654.205661.321660@h48g2000cwc.googlegroups.com>
Hi AliR,
     I am developing a MFC DLL project. I don't know how to catch
TCN_SELCHANGE notification. Could you give me some ideas?

David
AliR wrote:

TabCtrl_GetCurSel(hWnd) is a the same as
SendMessage(hWnd,TCM_GETCURSEL,0,0);

I saw that you are creating the tab and adding items to it. In the code
that you have posted (assuming that this is all in the same function) the
current selection is always going to be 0 because you have just added a
bunch of items and haven't set an index other than 0. So GetCurSel will
always return a 0.

If you want to display a different dialog box when the tab's selection is
changed then you will need to catch the TCN_SELCHANGE notification in the
WinProc of the parent window of the tab control, and do you showing and
hiding of the dialog there.

AliR.

"lfsym" <clamayi@gmail.com> wrote in message
news:1154533958.860695.26360@s13g2000cwa.googlegroups.com...

Hi AliR,
    I am sorry. the code is like this:
(1) create the tab control
      hwndTabCtrl=CreateWindow


(WC_TABCONTROL,"",WS_CHILD|WS_CLIPSIBLINGS|WS_VISIBLE,0,0,rcClient.right,rcC
lient.bottom,hwndParent,NULL,g_hinst,NULL);

     if(hwndTabCtrl==NULL)
         AfxMessageBox("can't create tab control window");
(2) create three dialogs
     pDialog[0]=new CPartDlg();
     pDialog[0]->Create(IDD_DIALOG_FOR_PART,NULL);
     pDialog[1]=new CMachineDlg();
     pDialog[1]->Create(IDD_DIALOG_FOR_MACHINE,NULL);
     pDialog[2]=new CProcessDlg();
     pDialog[2]->Create(IDD_DIALOG_FOR_PROCESS,NULL);

(3) insert items to Tab control
   m_tcitem.mask=TCIF_TEXT|TCIF_IMAGE;
    m_tcitem.iImage=-1;
    for(int i=0;i<TAB_PAGE_COUNT;i++)
   {
      m_tcitem.pszText=g_tabName[i];
      if(TabCtrl_InsertItem(hwndTabCtrl,i,&m_tcitem)==-1)
     {
           AfxMessageBox("can't insert");
           DestroyWindow(hwndTabCtrl);
     }

(4)set the display area for tab control


DeferWindowPos(hdwp,hwndTabCtrl,NULL,rcClient.left,rcClient.top+100,(rcClien

t.right-rcClient.left)/4,(rcClient.bottom-rcClient.top)/3,0);
    EndDeferWindowPos(hdwp);

(5) select the page and show the window
     int i_nPage=TabCtrl_GetCurSel(hwndTabCtrl);
    pDialog[i_nPage]->ShowWindow(i_nPage);
   (this maybe a little different)

the big problem here is I always get the value of i_nPage=0, when I
select the second page, this value is still zero. Does it mean that I
have to process the message TCN_SELCHANGE? I remeber from MSDN saying
that can use the macro TabCtrl_GetCurSel() replace sending
TCN_SELCHANGE message explicitly? I don't know why. thanks again.

David

AliR wrote:

Hi David,

I am sorry but I can't really tell what is going on from the code you
provided.

AliR.

"lfsym" <clamayi@gmail.com> wrote in message
news:1154529256.800375.224700@p79g2000cwp.googlegroups.com...

Thanks,AliR. I modify my codes according to your suggestion. but there
still the same problem.What I want is like this: when I select the
first page,one dialog is shown up(not automatically) and when I select
the second page the other dialog is up. because I use DLL, it is not
easy to process the message TCN_SELCHANGE. i use the macro
TabCtrl_GetCurSel(), but I don't know why the return value is always
zero. Please help me!

The codes are like:
//create tab control handler
hwndTabCtrl=CreateWindow(WC_TABCONTROL,"",


WS_CHILD|WS_CLIPSIBLINGS|WS_VISIBLE,0,0,rcClient.right,rcClient.bottom,hwndP

arent,NULL,g_hinst,NULL);

if(hwndTabCtrl==NULL)
AfxMessageBox("can't create tab control window");

    //create dialog for file

pDialog[0]=new CPartDlg();
pDialog[0]->Create(IDD_DIALOG_FOR_PART,NULL);

//create dialog for machine
// CMachineDlg *pMachineDlg;
pDialog[1]=new CMachineDlg();
pDialog[1]->Create(IDD_DIALOG_FOR_MACHINE,NULL);

//CREATE dialog for process
// CProcessDlg *pProcessDlg;
pDialog[2]=new CProcessDlg();
pDialog[2]->Create(IDD_DIALOG_FOR_PROCESS,NULL);

//fill tab control's information
m_tcitem.mask=TCIF_TEXT|TCIF_IMAGE;
m_tcitem.iImage=-1;

for(int i=0;i<TAB_PAGE_COUNT;i++)
{
m_tcitem.pszText=g_tabName[i];
if(TabCtrl_InsertItem(hwndTabCtrl,i,&m_tcitem)==-1)
{
    AfxMessageBox("can't insert");
    DestroyWindow(hwndTabCtrl);
}
}
             TabCtrl_AdjustRect(hwndTabCtrl,FALSE,&rcClient);

TabCtrl_GetItemRect(hwndTabCtrl,0,&rcTab); //Get the tab page
dimension

    hdwp=BeginDeferWindowPos(1);


DeferWindowPos(hdwp,hwndTabCtrl,NULL,rcClient.left,rcClient.top+100,(rcClien

t.right-rcClient.left)/4,(rcClient.bottom-rcClient.top)/3,0);

EndDeferWindowPos(hdwp);
int i_nPage=TabCtrl_GetCurSel(hwndTabCtrl);
if(pDialog[i_nPage]->m_hWnd)
pDialog[i_nPage]->ShowWindow(SW_HIDE);
for(int j=0;j<3;j++)
{
pDialog[j]->SetWindowPos(&pDialog[j]->wndTop,
rcClient.left,rcClient.top+100+rcTab.bottom-rcTab.top,


(rcClient.right-rcClient.left)/4,(rcClient.bottom-rcClient.top)/3,SWP_HIDEWI

NDOW);

}
pDialog[i_nPage]->SetWindowPos(&pDialog[j]->wndTop,
rcClient.left,rcClient.top+100+rcTab.bottom-rcTab.top,


(rcClient.right-rcClient.left)/4,(rcClient.bottom-rcClient.top)/3,SWP_SHOWWI

NDOW);

pDialog[i_nPage]->ShowWindow(SW_SHOW);

Thanks

David

AliR wrote:

In order for one dialog to be created as part of another window the

Dialog

must have the WS_CHILD style, and by default CFileDialog has the

WS_POPUP

style. There are ways around that, you can override the dialog

template

of

the file dialog and telling CFileDialog to load that instead.

http://www.codeproject.com/dialog/xfiledialog.asp

The other thing is that you will have to use CFileDialog::Create

method

instead of DoModal.

AliR.

"lfsym" <clamayi@gmail.com> wrote in message
news:1154442557.063598.252610@i42g2000cwa.googlegroups.com...

Hi,I am creating a tab control and want to pop up a file dialog

when

clicking one tab page. but now, the file dialog was shown up at

the

same time with tab control, not after selecting one page. Could

some

guys help me? Thanks

David

GetClientRect(hwndParent,&rcClient);
InitCommonControls();

hwndTabCtrl=CreateWindow(WC_TABCONTROL,"",


WS_CHILD|WS_CLIPSIBLINGS|WS_VISIBLE,0,0,rcClient.right,rcClient.bottom,hwndP

arent,NULL,g_hinst,NULL);

if(hwndTabCtrl==NULL)
AfxMessageBox("can't create tab control window");

m_tcitem.mask=TCIF_TEXT|TCIF_IMAGE;
m_tcitem.iImage=-1;

for(int i=0;i<TAB_PAGE_COUNT;i++)
{
m_tcitem.pszText=g_achTemp[i];
if(TabCtrl_InsertItem(hwndTabCtrl,0,&m_tcitem)==-1)
{
    AfxMessageBox("can't insert");
    DestroyWindow(hwndTabCtrl);
}
}

TabCtrl_AdjustRect(hwndTabCtrl,FALSE,&rcClient);

                hdwp=BeginDeferWindowPos(1);


DeferWindowPos(hdwp,hwndTabCtrl,NULL,rcClient.left,rcClient.top+100,(rcClien

t.right-rcClient.left)/4,(rcClient.bottom-rcClient.top)/3,0);

EndDeferWindowPos(hdwp);

//try to get the current focus of tab page
if(TabCtrl_SetCurSel(hwndTabCtrl,3)==3)
{
  CFileDialog partFileDlg


(TRUE,"prt",".prt",OFN_HIDEREADONLY,szFilter,CWnd::FromHandle(hwndTabCtrl));

if(partFileDlg.DoModal()==IDOK)
{
AfxMessageBox("create part file dialog");
}
}

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