Passing variables from PropertyPage to another in MFC

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hey guys...I am designing an MFC application...I have a head-ache in passing variable from one class to another..
I will explian my problem clearly...I have two PropertyPages attached to a PropertySheet

BOOL CExtractorFinalUIApp::InitInstance()
{
	
	CMyPropertySheet  propSheet(L"Self Extractor") ;//PropertyClass

	CMyPropertyPage1 page1;
	CMyPropertyPage2 page2;
	
		
	propSheet.AddPage(&page1);
	propSheet.AddPage(&page2);
	
	m_pMainWnd = &propSheet;
	propSheet.SetWizardMode();
	int nResponse = propSheet.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}
	return FALSE;
}

As u can see above I have set the CPropertySheet in Wizard mode..so if I click "NEXT "..it moves to the next page
that I have attached and now heres the deal...I have a variable "CString myapp" in CMyPropertyPage1 (which is the class for PropertyPage1)
and this variable holds some value which I wish to pass to the 2nd PropertyPage Class ( i.e) to CMyPropertyPage2(to one of its function)...
I have done this using static functions...but I cannot write functions for all the variables that I am tryin 2 pass...and off-course
thats not the healthy way to code I beleive...I heard some thing about the DDX..i think it will work only for control variables such as
edit control...checkbox and such...is ther a way that I can fix this with any one of ur assistance?

Posted 27-Dec-09 23:56pm

RakeshSR

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CPallini · Accepted Answer · 2009-12-28T00:23:00

You may:

Add public get/set methods to the CMyPropertySheet (you may use a std::map to hold {name, value} pairs).
On creation of the pages, pass the instance of the sheet to the pages themselves. This way each page may call the get/set methods of the sheet.

// header file of CMyPropertySheet
#include <map>
using namespace std;

CMyPropertySheet:public CPropertySheet
{
  //...
private:
  map< CString, int > m_ItemMap;
  //...
};

// source file of CMyPropertySheet
void CMyPropertySheet::setItem(CString key, int value)
{
  m_ItemMap.insert( make_pair(key, value) );
}
bool CMyPropertySheet::getItem(CString key, int & value)
{
  bool found = false;
  map< CString, int >::iterator it = m_ItemMap.find( key );
  if ( it != m_ItemMap.end() )
  {
    value = it->second;
    found = true;
  }
  return found;
}

// header file of CMyPropertyPage1
CMyPropertyPage1 : public CPropertyPage
{
private:
  CMyPropertySheet * m_pSheet;
public:
  CMyPropertyPage1(CMyPropertySheet * pSheet): m_pSheet(pSheet){}
}

 CMyPropertySheet  propSheet(L"Self Extractor") ;//PropertyClass

 CMyPropertyPage1 page1(&propSheet);
 CMyPropertyPage2 page2(&propSheet);

 propSheet.AddPage(&page1);
 propSheet.AddPage(&page2);
// ..

setItem

getItem

CMyPropertyPage1::OnMyBtnDown()
{
  m_pSheet->setItem("FirstVar", 100);
}