Delete a view but avoid document destruction, preserve document

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Hello,

I have this issue.

I have a view in a pane of a splitter and I switch the view inside the pane. I do something like that.

C#

Context.m_pNewViewClass=RUNTIME_CLASS(CConfigViewPlugin);
Context.m_pCurrentDoc=pView->GetDocument();
Context.m_pCurrentFrame=this;
//here I get the document of the old view I'm going to delete
Context.m_pNewDocTemplate= Context.m_pCurrentDoc->GetDocTemplate();
Context.m_pLastView=(CView*)m_wndSplitter.GetPane(0,1);
//here I delete the old view
m_wndSplitter.DeleteView(0,1);
//I create the new view CRASH!! BECAUSE THE DOCUMENT IS NOT VALID ANYMORE, the document has been deleted from mfc together with the old view
m_wndSplitter.CreateView(0, 1,RUNTIME_CLASS(CConfigViewPlugin),paneSize1, &Context);
pView=(CConfigViewRec*)m_wndSplitter.GetPane(0,1);
pView->GetParentFrame()->RecalcLayout();
m_wndSplitter.RecalcLayout();

Now, my problem is, when I delete the old view, mfc destroy the document, i tryed to pass to the new view a NULL document and NULL doctemplate, but I would like to preserve the document and pass it to the new view,, How can I do?

Posted 21-Feb-12 21:25pm

druscelli

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2 solutions

Solution 1

When closing the last view of a MDI document, the document is destroyed. To avoid this, create the new view before closing the old one.

Posted 21-Feb-12 22:14pm

Jochen Arndt

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druscelli · Accepted Answer · 2012-02-21T22:57:00

Probably your suggestion works, however I found 2 solutions:

1- In the document change the bool m_bAutodelete to False, and set back to True once I finish to replace.

2- I found a beautiful replaceview method in the splitter, It do everything for me automatically. I implemented this one. http://support.microsoft.com/kb/149257

PS: I tested the 1st solution as well, just to try.. and it also works.

PS2: I realized ReplaceView CPlitter method is not a native method of MFC CSplitter, I'm using a derivated CSplitter of CodeJock library and it offer this method.