Resize Property Page/Sheet in Wizard mode

I have a wizard made up of property pages on a property sheet.

Multiple pages with Next/Back etc.

I want the last page (only) to automatically size it self to cover pretty much the whole screen.  Can get screen size using GetSystemMetrics.  Any ideas how to resize the last property page of a wiz to the screen on the fly, n.b. I need to resize back to original size if the user presses back button.

Please remember I've set Wizard mode if this makes a difference.

Thanks
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hbuehlerConnect With a Mentor Commented:
Hi!

1) changing size of the property sheet (it doesn't matter whether it is a wizard or not):

You can achive this by calling SetWindowPlacement() or an equal function on the sheet. Afterwards, you must even resize your page by SetWindowPlacement().

However, if you do so, the controls ("next","finish" etc.) won't automatically change their location.
You can add a WM_SIZE message handler to the _sheet_ and reposition these controls by hand (I suggest you even overwrite OnInitDialog() (this exists :) to initially read in their original positions.

You need to reposition the controls with the following codes:

ID_WIZNEXT,
ID_WIZFINISH,
ID_WIZBACK,
IDOK,
IDCANCEL,
ID_WIZNEXT,
ID_APPLY_NOW,
IDHELP,
AFX_IDC_TAB_CONTROL,
ID_WIZFINISH+1,      /* the bevel line*/

You can get a CWnd to the controls by using GetDlgItem()
(assuming you have __max control ids in an array m_ids[__max+1]
and some WINDOWPLACEMENT structures in m_wpl[__max+1]):

for(int i=0;i=<__max;++i)
{
  if(CWnd *pCtrl = CPropertySheet::GetDlgItem(m_ids[i]))
    pCtrl->GetWindowPlacement(m_wpl[i]);
}

2) Changing your sheet's size:

You can overwrite the page's OnSetActive().

use the following (pseudo-)code:

 BigPage::OnSetActive()
 {
   m_pSheet->GetWindowPlacement(&wpl_sheet_backup);
   GetWindowPlacement(&wpl_page_backup);

   m_pSheet->SetWindowPlacement(&wpl_sheet_big);
   // m_pSheet is a pointer to your sheet; you could use
   // GetParent() if you don't like to hold one.
   // Since you catch WM_SIZE to reposition the controls,
   // they'll be put to the right position.

   SetWindowPlacement(&wpl_page_big);
   // set BigPages' size
 
   ...
 }

To resize the sheet if going back, catch the virtual function
OnWizardBack():

 BigPage::OnWizardBack()
 {
   SetWindowPlacement(&wpl_backup_page);
   m_pSheet->SetWindowPlacement(&wpl_backup_sheet);
   ...
 }

That should work.

NOTE: If you may want to make use of my code which gives you reizable sheets at all, have a look at http://www.codeguru.com (one of the finest MFC sites :) BUT - Unfortunately it hasn't been published yet (I sent it there yesterday) ... so maybe you have to wait some days :(

- Hans



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