Thread: sharing variables between dialogs

Hi,
I have a program with two dialog boxes each with their own class. If someone clicks on a button in Dialog A, it opens up dialog B. I was wondering is Dialog B will have access to the public variables in dialog A or if not, is there a way for Dialog A to pass variables to dialog B. Thanks
Amish

Given A is parent of B, then yes B has access to public members of A.

Kuphryn

To create dialog B, all I do is this:
filterFileCreator dlg;
dlg.DoModal();

but in the class B, it does not seem like I have access to public functions and variables of class A

Override DoModal() so that it looks like:
DoModal(ClassA *parent)

Then when you call it:
filterFileCreator dlg;
dlg.DoModal(this);

In the DoModal() function you will need to call CDialog:: DoModal().

Class A #includes classB.h
If I am to use the this pointer in class B, I will have to include ClassA.h in Class B. Wouldn't the classes including each other cause problem. Thanks
Amish

Use a forward reference:

Code:

// dialogB.h

class DialogA;

class DialogB
{
     private: DialogA *pA;
     ...
}

........

// DialogA.h
#include DialogB.h
class DialogA 
{
    private: DialogB db;
    ...
}

You can also consider placing the class definitions in the same header file since they seem to be tightly coupled together.