Umm...Whats going on with this?

[laiason5]

heres the problem:

#if !defined(AFX_MYTREECTRL_H__CE6F240E_0D3E_11D3_853B_004F490685B3__INCLUDED_)
#define AFX_MYTREECTRL_H__CE6F240E_0D3E_11D3_853B_004F490685B3__INCLUDED_

#include <apvector.h>
#include "CPhysicsDBDlg.h" //simply including this file causes massive amounts of errors
//this doesnt make sense as this is my main dlg box in my program


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

/////////////////////////////////////////////////////////////////////////////
// CMyTreeCtrl window

struct tNode
{
HTREEITEM NodeName;
apvector<tNode*> SubNodes;
apvector<CString> Q;
apvector<CString> A;
apvector<CString> Dum1;
apvector<CString> Dum2;
apvector<CString> Dum3;
apvector<CString> Dum4;

};

class CMyTreeCtrl : public CTreeCtrl
{
// Construction
public:
CMyTreeCtrl();

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CMyTreeCtrl)
//}}AFX_VIRTUAL
CPhysicsDBDlg * MyParent;

// Implementation
public:
//CPhysicsDBDlg* MyParentWin;
void DeleteBranch(tNode* pDelNode);

virtual ~CMyTreeCtrl();

// Generated message map functions
protected:
//{{AFX_MSG(CMyTreeCtrl)
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
private:
};

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

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

#endif // !defined(AFX_MYTREECTRL_H__CE6F240E_0D3E_11D3_853B_004F490685B3__INCLUDED_)




anyone know what could cause errors by simply including a file that is compiled fine on its own and runs the program fine if it is not included in any custom made classes?
thanks
L5

[Paul Burns]

its possible the CPhysicsDBDlg.h file contains declarations which are dependant on other include files.

[Paul Burns]

wait a minute, i'm guessing you've got something like this happening...


// in "MyTreeCtrl.h"
class CMyTreeCtrl : public CTreeCtrl
{
// ...
//
CPhysicsDBDlg * MyParent;
// ...
//
}

// and in "PhysicsDBDlg.h"
class CPhysicsDBDlg : public CDialog
{
// ...
//
CMyTreeCtrl m_MyTree;
// ...
//
}




if so, then you've got a sort of circular reference happening - you can't in include "MyTreeCtrl.h" without including "PhysicsDBDlg.h" before it, and you can't include "PhysicsDBDlg.h" without including "MyTreeCtrl.h" before, etc., etc. Easy fixed, forward declare one of them...


// add this at the beginning of "MyTreeCtrl.h"
extern class CPhysicsDBDlg;

[laiason5]

thanks a WHOLE LOT.
what you said...worked.
thanks again.