Different views in SDI

dart13

I need to put three different forms in SDI application's CView window so that user can choose which view he wants to see. If I make 3 different CFormView classes how do I select one to be shown in a CView window?

Dreamz

http://www.codeproject.com/useritems/MultiViewsMFC\_MDI.asp Hope this article will help you .

Andrew Quinn AUS

Hi there, Create your first view as normal:

CSingleDocTemplate\* pDocTemplate;
pDocTemplate = new CSingleDocTemplate(
	IDR\_MAINFRAME,
	RUNTIME\_CLASS(CMyDoc),
	RUNTIME\_CLASS(CMainFrame),       // main SDI frame window
	RUNTIME\_CLASS(CForm1));
AddDocTemplate(pDocTemplate);

Then, still in InitInstance, store an array (or obarray) to hold the other views...

CView\* pActiveView = ((CFrameWnd\*) m\_pMainWnd)->GetActiveView();

m\_pViews\[0\] = pActiveView;
m\_pViews\[1\] = (CView\*) new CForm2;
m\_pViews\[2\] = (CView\*) new CForm3;

CDocument\* pCurrentDoc = ((CFrameWnd\*) m\_pMainWnd)->GetActiveDocument();

// Initialize a CCreateContext to point to the active document.
// With this context, the new view is added to the document
// when the view is created in CView::OnCreate().
CCreateContext newContext;
newContext.m\_pNewViewClass = NULL;
newContext.m\_pNewDocTemplate = NULL;
newContext.m\_pLastView = NULL;
newContext.m\_pCurrentFrame = NULL;
newContext.m\_pCurrentDoc = pCurrentDoc;

// The ID of the initial active view is AFX\_IDW\_PANE\_FIRST.
// Incrementing this value by one for additional views works
// in the standard document/view case but the technique cannot
// be extended for the CSplitterWnd case.
UINT viewID\[3\];
viewID\[1\] = AFX\_IDW\_PANE\_FIRST + 1;
viewID\[2\] = AFX\_IDW\_PANE\_FIRST + 2;    
CRect rect(0, 0, 0, 0); // gets resized later

// Need to cast pointers to have correct Create functions called
for ( int nView=1; nView<NUMVIEWS; nView++ )
{
    // Create the new view. In this example, the view persists for
    // the life of the application. The application automatically
    // deletes the view when the application is closed.
    m\_pViews\[nView\]->Create(NULL, NULL,
			(AFX\_WS\_DEFAULT\_VIEW & ~WS\_VISIBLE),
		// views are created with the style of AFX\_WS\_DEFAULT\_VIEW
		// In MFC 4.0, this is (WS\_BORDER | WS\_VISIBLE | WS\_CHILD)
	                rect, m\_pMainWnd,
			viewID\[nView\], &newContext);
}

// When a document template creates a view, the WM\_INITIALUPDATE
// message is sent automatically. However, this code must
// explicitly send the message to the extra views as follows.
((CForm2\*)m\_pViews\[1\])->OnInitialUpdate();
((CForm3\*)m\_pViews\[2\])->OnInitialUpdate();

Here's a function to help you switch dynamically between the views...

CView* CMyApp::SwitchView( UINT n

Dreamz

I gave the link for MDI :doh: Think same thing will work for this also ;)

dart13

Thanx for your help. I'll try to implement this today and let you know how it works.

dart13

thanx. hopefully, it will help.

dart13

I just wanted to thank you again for your help. I applied the code you gave me in the application and it works. I had some problems with the SwitchView(), particulary this line ((CFormView*)pNewView)->ResizeParentToFit(FALSE); because it would produce strange windows sizes for the first 7-8 calls of SwitchView(), and then it would work fine. So I put ((CFrameWnd*) m_pMainWnd)->RecalcLayout(); instead. It works fine now. And I'd like to ask you one more question. I have a button "quit" on one of CFormView's forms. What should I put in OnButtonQuit() message handler, so that the application exits after the button is pressed?