How to access a member variables from another class?

[laephy]

I have an sdi program with two dialog boxes with its respectively classes (CDialog1 and CDialog2). Through a bottom in the 1st dialog box I call the second dialog box. In the second dialog box, the user gives the values for some variables. I know that I can obtain the values of the second dialog box from the first dialog box using m_variable=dlg.m_variable in the OnSecondDialog function.

I want to write in two files the variables given by the user in both dialog boxes using the serialize function on my CApplicationDoc file. My question is: how can I access the member variables of CDialog1 and CDialog2 from the CApplicationDoc class?

[VictorN]

My question is: how can I access the member variables of CDialog1 and CDialog2 from the CApplicationDoc class?

Well, the first dialog has to set this variable to the document instance, and the second one - get this variable.
To achieve it both dialogs need to have a pointer (or reference) to the document instance.

[laephy]

DO achieve it both dialogs need to have a pointer (or reference) to the document instance.

I am newbie on visual c++ and I have a dummy question. Where is better to define the pointer in the document class CApplicationDoc.h:

CDialog1::*pointer

or in the Dialog class CDialog.h:

CApplicationDoc::*pointer ?

[VictorN]

CDialog1::*pointer

or in the Dialog class CDialog.h:

CApplicationDoc::*pointer ?

I have no ideas what CDialog1::*pointer is, nor have any clue about CDialog.h.

Usually, if you have two dialogs CDialog1 and CDialog2 that need to access the CApplicationDoc class you declare a variable in each dialog:

CApplicationDoc* m_pDoc;

, set it to NULL in ctors, and implement method to set this document pointer in each dialog:

void SetDocument(CApplicationDoc* pAppDoc) {m_pDoc = pAppDoc;}

Then you call this SetDocument for each dialog before calling corresponding DoModal or Create...

Now you'll be able to access public CApplicationDoc members/methods from within your dialogs.