mfc view not updating

[YouPoP]

Hi, I am doing an MFC MDI application with VS 8.0. I am using the default document view plus a formview ans show both of them in the view using a splitter.
In the formview there is an event onBtnclicked that displays some valued entered by the user in the document. Here is the code in my formview:

// MyForm.cpp

void CMyForm::OnBnClickedButtonok()
{[INDENT]CTP1Doc *pDoc = (CTP1Doc *)GetDocument();
pDoc->hello += "BONJOUR";
pDoc->UpdateAllViews(this);[/INDENT]
}


// TP1View.cpp 

void CTP1View::OnDraw(CDC* pDC)
{[INDENT]CTP1Doc* pDoc = GetDocument();
CTP1Doc* pDoc2 = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
pDC->TextOut(10,10,pDoc->hello);
pDC->TextOut(10,25,pDoc2->hello2);[/INDENT]
}

the application is updating the view (and drawing the text) only after the application itself has been hidden (under another application, or minimized) and showing again.

Also, i tried doing it in a third class

//MatriceCalculs.cpp

float CMatriceCalculs::VerifSolution(float *matriceA[2][2], float *matriceB[2][1])
{[INDENT]CMDIFrameWnd *pFrame = (CMDIFrameWnd*) AfxGetApp()->m_pMainWnd; 
CMDIChildWnd *pChild = (CMDIChildWnd *) pFrame->GetActiveFrame(); 
CTP1View *pView = (CTP1View *)pChild->GetActiveView();
CTP1Doc *pDoc = pView->GetDocument();
pDoc->hello += "// y = kekchose ";
return 1.0;[/INDENT]
}

and the problem is the same, it does not update the view in real time.

Thanks for helping!

[Studlyami]

you need to invalidate the object after you have finished updating it (this will make a call to OnPaint()). You can invalidate the entire object this->Invalidate(tru e); or just the control area pDoc->Invalidate(tru e);

[YouPoP]

pDoc->Invalidate(tru e);
is not working (Invalidate not a member of TP1Doc)
but Invalidate() in the OnUpdate method is working fine

thank you very much for your reply!