Impossible to reach a CRecordView class on the main CFrameWnd from another CDialog modal :(

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I am stuck to compete my project in just reaching a CRecordView derived class which is a child class on the main CFrameWnd class - from a modal CDialog derived class -. The purpose of this is when the user clicks on the OK button from the modal dialog, a public function on that CRecordView derived class should be called.
I tried all possible functions to access that CRecordView derived class, which are:

::AfxGetMainWnd()->GetDescendantWindow(nID);
::FindWindow(LPCTSTR lpClassName, LPCTSTR lpWindowName);
::GetWindow(HWND hWnd, UINT uCmd);

nothing is working :(

Is there any other tricks to do that?

Help me please :((

Posted 7-Feb-11 22:48pm

Mr. Tomay

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5 solutions

Solution 4

Your could extend the dialog constructor:

class CYourDialog : public CDialog
{
  CRecordView* m_pcView;
..

public:
  CYourDialog(CRecordView* pcView, CWnd* pcParent)
    : CDialog(pcParent, CYourDialog::IDD), m_pcView(pcView) {};

..
  virtual void OnOK()
  {
    if (pcView->GetSafeHwnd()) {
      //..
    }
  }
..
};

..or, as Carlo said, use the OK event at the parent side:

void CMainFrame::OnRecordViewConfig()
{
  CYourDialog cDlg(this);
  if (IDOK == cDlg.DoModal()) {
    if (m_pcRecordView->GetSafeHwnd()) {
      //..
    }
  }
}

:)

Posted 8-Feb-11 4:27am

Eugen Podsypalnikov

Updated 8-Feb-11 4:34am

v2

Solution 1

Usually the OK button closes the modal dialog and the parent window can handle such a event.
:)

Posted 7-Feb-11 22:59pm

CPallini

Comments

Mr. Tomay 8-Feb-11 5:35am

that's right. But my CRecordView class was created using an SDI app project & I don't know how to get a pointer to it :(

CPallini 8-Feb-11 6:11am

The trick is providing access by the class that created it or, alternatively, let the latter know about the 'OK' button event (for instance you may post a message).

Mr. Tomay 8-Feb-11 6:20am

can you explain how ?

Solution 2

Try AfxGetApp()->m_pMainWnd, casting it as appropriate to your window class.

Posted 8-Feb-11 3:56am

basementman

Comments

Mr. Tomay 9-Feb-11 8:31am

AfxGetApp()->m_pMainWnd will return the main frame window not the view one.

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Nish Nishant · Accepted Answer · 2011-02-08T04:17:00

Solution 3

The CRecordView window will be a child of its parent frame window. You are most likely getting the parent frame. Once you get that, call GetActiveView and cast the CView* to CRecordView*, and that should do it.

Posted 8-Feb-11 4:17am

Nish Nishant

v2

Comments

Mr. Tomay 9-Feb-11 8:24am

Nice thinking ;)

Nish Nishant 9-Feb-11 8:56am

:-)

Mr. Tomay 10-Feb-11 9:30am

I found a little problem: GetActiveView doesn't always return my CRecordView when no active view is focused

Nish Nishant 10-Feb-11 9:39am

That indicates some other issue since the frame window should always have one active view?

Mr. Tomay 10-Feb-11 18:04pm

I have did some changes: I have added a splitter window that contains my CRecordView and another CFormView.

Nish Nishant 10-Feb-11 18:28pm

Ah okay, that makes it tricky. CFrameWnd does not have any public method to enumerate all its child views. I think it would be your best option to store the individual view pointers in the CFrameWnd-derived parent.

Mr. Tomay 10-Feb-11 18:59pm

I found a solution: which consist in finding the first child window of class name CSplitterWnd of the main frame window and then access to my CRecordView view from the found splitter window. using this code:
<pre>for (CWnd* pWnd = GetWindow(GW_CHILD); pWnd != NULL && !pWnd->IsKindOf(RUNTIME_CLASS(CSplitterWnd)); pWnd = pWnd->GetNextWindow());
if (pWnd != NULL) // We got our CSplitterWnd
{
pWnd = ((CSplitterWnd*)pWnd)->GetPane(1, 0); // here is my CRecordView in row 2 and column 1 of the splitter window.
}</pre>
and it is working perfectly ;)
Solved now.
Thanks for the help anyway

Nish Nishant 10-Feb-11 19:03pm

Good to hear that. That code will work so long as you don't change your layout.

Mr. Tomay 10-Feb-11 19:06pm

of course

Espen Harlinn 17-Mar-11 10:40am

Nice effort, my 5

Albert Holguin · Accepted Answer · 2011-02-08T06:31:00

If CRecordView is derived from CWnd (which I'm pretty sure it is), you can pass on the pointer to the modal dialog extending your dialog's constructor as suggested by eugen or by messaging to it (since CDialogs are also CWnd). To message to a CWnd, use its pointer to access PostMessage() or use the extended PostMessage with the hwnd.

See CWnd::PostMessage() for details on how to use it. Remember that anything derived from a base class can be recast as the base class in order to use its methods. For example...

CRecordView *recview;
CWnd *p_cwnd = (CWnd *) recview;

So now you can make calls such as p_cwnd->PostMessage(). Just make sure that you have the appropriate messages defined the CWnd's message map that's supposed to receive them (or CWnd derived class's message map).