Access control variables and methods of other classes in SDI Application

[Maxim Zarus]

Hi, In a SDI Application, I have three Classes CMainFrame, CLeftView(Derived from CTreeView) and CMyPrgView(Derived from CFormView). Now I want to access all class member, function and control variables of each class from rest of classes. Like when I click on tree items(LeftView), Controls placed on FormView should respond or clicking on menu(MainFrame) both TreeView items and Formview controls respond and vice versa. Please tell me any standard way to access other class members and function in SDI Application. Regards, Maxim.

[Paresh Chitte]

Write your controling function in Application class (Derived from CWinApp).

class CYourApp : public CWinApp
{
public:
   void YourControlingFunction();
}

//Wherever required use like this,

CYourApp* pApp = (CYourApp*)AfxGetApp();
if(NULL != pApp)
{
   pApp->YourControlingFunction();
}

Hope this will serve your purpose. Regards, Paresh.

[Maxim Zarus]

Thanks for your reply. I tried following code in my CLeftView class on Tree item selection(OnTvnSelchanged).

CMyPrgView* pView= (CMyPrgView*)AfxGetApp();
if(NULL!=pView)
{
pView->m_Edit1.SetWindowText(L"P");
}

But getting "Debug Assertion Failed" error on SetWindowText().

[Akt_4_U]

The AfxGetApp() will return your application class poniter not view. Here you have casted the AppClass to ViewClass poniter. This is not possible.

akt

[Maxim Zarus]

I did it as suggested by "Paresh". I have also tried CMyPrgView* pView = new CMyPrgView(); but still Assertion error comes. What i do, please suggest me.

[SandipG]

You can have pointers to your view classes inside CMainFrame. and then access through AfxGetMainWnd() which will giev you pointer to CMainFrame. you have to typecast i.e. (CMainFrame*)AfxGetMainWnd(). I home it makes sense.

Regards, Sandip.

[Paresh Chitte]

Please read my post carefully. Take the help of AfxGetApp[^]. Regards, Paresh.