C / C++ / MFC

Re: DAAAHH! What does this error message means?

15-Nov-01 12:22

It means the compiler has already found a definition fo THIS_FILE. Either it is defined in more than one place or you need to ifdef it out...

x.h
#ifndef x.h

// This will only be compiled once no matter how many times it is referenced.
#define x.h

#define THIS_FILE something
#endif

Thanks for the help,
Bill

Bill Wilson15-Nov-01 12:22

Re: DAAAHH! What does this error message means?

15-Nov-01 12:22

Rick York16-Nov-01 18:50

Rick York

16-Nov-01 18:50

In addition to what Bill said, most of the code I deal has this little section near the top :

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif // _DEBUG

Property Pages question

RobJones15-Nov-01 9:03

15-Nov-01 9:03

Hello,
I have created a dialog type app(called "A")and a dialog type wizard (Property Page type of wizard) (called "B") to be used with in dialog "A"..

I am having problems pulling string information from previous pages of the wizzard before the wizard dialog is destroyed. Im a newb to property pages, any ideas on how I can pull the string info that the user inputs into the wizard before its closed/finished?

Thanks,

Rob

Bill Wilson15-Nov-01 12:30

15-Nov-01 12:30

Create member variables in your dialog class. Store the data you wish to access in the member variables. After the DoModal call returns, the dialog object still exists. You should be able to access its public members and methods just like any other object.

Hope this helps,
Bill

RobJones16-Nov-01 3:18

16-Nov-01 3:18

I have tried that with out success. I create the DoModal() wizard and when the OnFinish is returned I tried to pull the strings from the items on each dialog.. Maybe I need to add a OnKillActive and do UpdateData(FALSE) on each dialog?

I Have even tried to do a simple MessageBox on the destruction of the wizard and it's unable to pull the string info from the previous pages.. the MessageBox pops up blank.. I'll try to put the UpdateData(FALSE)function on each page OnKillActive..

If you have any other ideas please let me know.

Thanks,

Rob Jones

Frank Deo16-Nov-01 3:48

Frank Deo

16-Nov-01 3:48

I've accomplished this in the past by creating a CStringArray variable in the page2, and filling that array while still on page1.

Maybe kinda bloated, but it worked. Smile | :)

Good Luck,
Frank

Bill Wilson16-Nov-01 7:15

16-Nov-01 7:15

Your right, the data held in the dialogs that make up the wizard are no longer accessible. You should have a class that represents the wizard itself. This is the object whose DoModal method is executed. It is still accessible:

Here is a sample from a project I worked on last year. The first listing is the Wizard class itself. It is derived from CPropertySheet. The dialogs it presents are CPropertyPage derived objects. These are stored as member variables in the CWizard object.

Each of the property pages can access the CWizard class (as a parent window). While this one has no actual data stored in it, it could have. In this project, I have the individual property pages store data in project wide globals, so I didn't need to retrieve data from the Wizard itself.

#if !defined(AFX_WIZARD_H__14E36E7B_5840_11D4_BD9F_00B0D0209426__INCLUDED_)
#define AFX_WIZARD_H__14E36E7B_5840_11D4_BD9F_00B0D0209426__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// Wizard.h : header file
//
#include "Welcomeppg.h"
#include "Detectionppg.h"
#include "ComponentSelectionPpg.h"
#include "ComponentInstallationPpg.h"
#include "installCompletePpg.h"
#include "verifyppg.h"

/////////////////////////////////////////////////////////////////////////////
// CWizard

class CWizard : public CPropertySheet
{
	DECLARE_DYNAMIC(CWizard)

// Construction
public:
	CWizard(UINT nIDCaption, CWnd* pParentWnd = NULL, UINT iSelectPage = 0);
	CWizard(LPCTSTR pszCaption, CWnd* pParentWnd = NULL, UINT iSelectPage = 0);

// Attributes
public:

// Operations
public:

	CWelcomePpg m_ppgWelcome;
	CDetectionPpg m_ppgDetection;
	CComponentSelectionPpg m_ppgComponentSelection;
	CComponentInstallationPpg m_ppgComponentInstallation;
	CInstallCompletePpg m_ppgInstallComplete;
	CVerifyPpg m_ppgVerify;

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CWizard)
	public:
	virtual BOOL OnInitDialog();
	virtual BOOL PreTranslateMessage(MSG* pMsg);
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CWizard();

	// Generated message map functions
protected:
	//{{AFX_MSG(CWizard)
	virtual void OnCancel();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_WIZARD_H__14E36E7B_5840_11D4_BD9F_00B0D0209426__INCLUDED_)

RobJones16-Nov-01 11:12

16-Nov-01 11:12

Good idea!! I havent tried that yet, and it looks like it should work.

Thanks!

Rob

RobJones16-Nov-01 11:52

16-Nov-01 11:52

All of my wizard pages are derived from the CNewWizPage class so if I try to add a member variable ( Public: CItemDlg m_dItemDlg) inside of my CNewWizPage or CNewWizDialog class it errors... Maybe I should scrap the custom class and derive my own class from CPropertySheet instead.. This is the class I'm using "http://www.codeproject.com/dialog/wizard2000.asp" I dont know if you have tried it..

Just incase im doing something dumb here is what I did.. maybe I'm over looking something..

#if !defined(AFX_NEWWIZDIALOG_H__915D4C89_2E27_11D4_9FA9_0030DB0011C6__INCLUDED_)
#define AFX_NEWWIZDIALOG_H__915D4C89_2E27_11D4_9FA9_0030DB0011C6__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// NewWizDialog.h : header file
//

#include "ItemDlg.h"
class CNewWizPage;

/////////////////////////////////////////////////////////////////////////////
// CNewWizDialog dialog

class CNewWizDialog : public CDialog
{
// Construction
public:
	CNewWizDialog (LPCTSTR lpszTemplate, CWnd* pParent = NULL);
	CNewWizDialog (UINT nIDTemplate, CWnd* pParent = NULL);
	virtual ~CNewWizDialog ();


// Attributes
public:


protected:
	CObList m_PageList; // this list of CNewWizPage objects
	UINT m_nPlaceholderID; // control ID for the palceholder


// Operations
public:
	CItemDlg m_dItemDlg;
	void AddPage(CNewWizPage* pPage, UINT nID);
	void SetActivePageByResource(UINT nResourceID);
	BOOL SetFirstPage();
	void SetNextPage();
	void EnableFinish(BOOL bEnable);
	void EnableBack(BOOL bEnable);
	void EnableNext(BOOL bEnable);
	int GetActiveIndex() const;
	int GetPageIndex(CNewWizPage* pPage) const;
	int GetPageCount();
	CNewWizPage* GetPage(int nPage) const;
	BOOL SetActivePage(int nPage);
	BOOL SetActivePage(CNewWizPage* pPage);
	void SetTitle(LPCTSTR lpszText);
	void SetTitle(UINT nIDText);
	void SetFinishText(LPCTSTR lpszText);
	void SetFinishText(UINT nIDText);

protected:
	BOOL ActivatePage(CNewWizPage* pPage);
	BOOL DeactivatePage();
	void SetPlaceholderID(int nPlaceholderID);
	CNewWizPage* GetPageByResourceID(UINT nResourceID);


private:
	void Init();
	BOOL DestroyPage(CNewWizPage* pPage);
	CNewWizPage* GetFirstPage();
	CNewWizPage* GetLastPage();
	CNewWizPage* GetActivePage() const;
	CNewWizPage* GetNextPage();


// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CNewWizDialog)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	virtual BOOL OnInitDialog();
	//}}AFX_VIRTUAL

// Implementation
protected:

	// Generated message map functions
	//{{AFX_MSG(CNewWizDialog)
	afx_msg void OnDestroy();
	afx_msg void OnWizardFinish();
	afx_msg void OnWizardBack(); 
	afx_msg void OnWizardNext(); 
	afx_msg void OnCancel(); 
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_NEWWIZDIALOG_H__915D4C89_2E27_11D4_9FA9_0030DB0011C6__INCLUDED_)

Heres where it errors with an error of "e:\Wizard\itemdlg.h(22) : error C2065: 'IDD_ITEM' : undeclared identifier
e:\Wizard\itemdlg.h(22) : error C2057: expected constant expression"

class CItemDlg : public CNewWizPage
{
// Construction
public:
	CItemDlg(CWnd* pParent = NULL);   // standard constructor

// Dialog Data
	//{{AFX_DATA(CItemDlg)
	enum { IDD = IDD_ITEM };  <-- HERE 
	CString	m_strPassword;
	CString	m_strVpassword;
	CString	m_strItem;
	CString	m_strName;
	//}}AFX_DATA


// Overrides

Any ideas?

Rob

Bill Wilson16-Nov-01 13:12