Set up a tab control easily to show and hide objects with STabCtrl

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Environment: Visual C++ 4.2, Windows NT 4 (SP3)

Since I first sumitted this article (way back in Feb 99) and “STabCtrl” people out there have been responding with thanks, bug fixes and enhancements, thanks all. It’s been a while now since the first submission so I thought that I’d better get a more up to date version of STabCtrl submitted.

On the outside the control hasn’t changed much, Only one bug fix and the additional handling of the OnEnable message. Internally a fair bit has changed.. a small amount of optimization and some major house cleaning of the code.

Anyway, the current project that I’m working makes use of a lot of tab
controls, and on the tab pages there are typically up to
10 controls! And using the ON_NOTIFY(TCN_SELCHANGE… ) message,
in the parent window becomes painful.
Why not use property pages? people ask. Sure that would make
things easier but the pages on property pages take up the entire
parent window and we’ve got layouts that require any number of
controls to not be on a page but around the tab control
somewhere, to do that with property pages requries a bit of
painful coding to get things where you want them, and if scaling
of the page is involved it’s even harder!

The STabCtrl although very simple, I’ve found to be extremly
useful. It Implements a tab control that automatically handles
the showing and hiding of objects attached to a tab’s various
pages eliminating the need to do so via the
ON_NOTIFY(TCN_SELCHANGE… ) message in a parent window.

To use the control:

  1. Simply replace any instance of a CTabCtrl with CSTabCtrl
    (remember to include the header file
    "STabCtrl.h"),
    initialize it as you would an MFC CTabCtrl.
  2. Use the AttachControlToTab member to attach you objects
    to the various avaliable pages.
  3. Use the SetCurSel member to programaticly show
    a tabs particular page.

Note: Steps 1, 2 & 3 are
typically done in the parent dialogs ::OnInitDialog() member.
Once done the tab control will show and hide the attached objects
depending on the users tab selection.



// file : SomeDialogClass.h

class CSomeDialogClass : public CDialog
{
	CSTabCtrl m_TabCtrl;
	CTreeCtrl m_TreeCtrl;
	CListCtrl m_ListCtrl;
	CComboBox m_ComboCtrl;

	virtual BOOL OnInitDialog();
};



// file : SomeDialogClass.cpp

BOOL CSomeDialogClass::OnInitDialog()
{
	CDialog::OnInitDialog();

	////////////////////////////////////////////////////////
	// set up tabs.

	PSTR pszTabItems[] =
	{
		"Tab Sheet 1 : Tree control",
		"Tab Sheet 2 : List control",
		"Tab Sheet 3 : Combobox control",
		NULL
	};

	TC_ITEM tcItem;

	for(INT i = 0; pszTabItems[i] != NULL; i++)
	{
		tcItem.mask = TCIF_TEXT;
		tcItem.pszText = pszTabItems[i];
		tcItem.cchTextMax = strlen(pszTabItems[i]);
		m_TabCtrl.InsertItem(i,&tcItem);
	}

	// attach controls to tabs pages.

	m_TabCtrl.AttachControlToTab(&m_TreeCtrl,0); // attach tree control to first page
	m_TabCtrl.AttachControlToTab(&m_ListCtrl,1); // attach list control to second page
	m_TabCtrl.AttachControlToTab(&m_ComboCtrl,2); // attach combo box control to third page

	// initialize tab to first page.
	m_TabCtrl.SetCurSel(0);

	////////////////////////////////////////////////////////
}


Downloads

Download demo project – 18 Kb
Download source – 3 Kb

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