?
Solved

Static Splitter on the fly?

Posted on 2003-02-22
8
Medium Priority
?
529 Views
Last Modified: 2013-11-20
This is 1 of 2 related questions on MFC, asked on same day.

My App is MFC, Doc/View, SDI.  Using MFC 4.2 with Visual C++ 6

The main view contains a FormView derived class

When the app is opened only this is View is shown

When the user takes some action (like a Special File New/Open) I want to open up a splitter.  The splitter is vertical.  On left pane, my formview derived class.  On the right pane there is a special scrolling list (see other question if you are interested in detail of this)

I do not believe a dynamic splitter will do the job, as this requires all the views to be of the same time

Therefore I think I need a static splitter

The question is how can I create a static splitter after the app is already running?

The possible trick I have thought of is to make the 2 panes always at start, and hide (or make zero width) the right pane.  

What is the best way to solve this.  Needs to be bullet proof as I can not rely on friendly users to with limitations. (example: if I make a zero with pane, there must be no way a user can make it bigger unless I saw so)


I realize this could be hard, so if it someone spends a lot of time (like makes a test program or gives actual code), I will give exrta points, as I have lots to spare.
0
Comment
Question by:Answers2000
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
8 Comments
 
LVL 12

Expert Comment

by:migel
ID: 8002847
Hi!
it is no big problem:
1. in the your frame window class add method : ShowSplitter
   also you have to add member CSplitterWnd m_wndSplit;
2. Code for this method in general must
a) Get view curently showed on the frame
b) Create static splitter
c) Create one pane for splitter (Form View)
d) Set for your view proper Window ID (getted from splitter for second plane)
e)Change parent for view to the splitter
f) Call ReclacLayout for splitter.
here is code( I`m not test this but general rule you can catch :-) )
   
CMyFrame::ShowSplitter()
{
   CWnd* pWnd = GetWindow(GW_CHILD); // get current view
   if (!m_wndSplitter.CreateStatic(this, 1,2)
        return;

   if (!m_wndSplitter.CreateView(1,0, RUNTIME_CLASS(CFormView), CSize(120, 0), pContext))
                  {
                  TRACE0("Failed to create !");
                  return;
                  }
    ::SetWindowLong(pWnd->m_hWnd, GWL_ID, m_wndHorzSplitter.IdFromRowCol(0, 0));
    pWnd->SetParent(&m_wndSplitter);
    m_wndSplitter.RecalcLayout();
}
0
 
LVL 8

Author Comment

by:Answers2000
ID: 8013812
Neat idea, get the concept, but can't make it work.

1. pContext - where does this come from? I tried making an empty CCreateContext structure and passing pointer to that (actually just declare it, as Docs and MFC sources show it's all initialized to NULLs)

2. I think it's CreateView(0,1,etc..) to match the set up above? (if not I get an ASSERT in MFC sources on a line checking the rows/columns parameters)

3. Fixing 1+2 with CSize(120,0) - the existing view appears to go dead (won't respond) get ASSERT in MFC WINGDI.CPP line 417. Seems to suggest something like the original view has been lost or lost it's data

4. Tried with CSize(120,120). CreateView now fails.  After that original view appears to go dead (won't respond to mouse etc), and when exit the app, I get another asset in MFC sources. This one inside GetPane function - WINSPLIT.CPP line 364. Basically a pane is NULL (my original view) when it shouldn't be.

I don't know but 3+4 seem to suggest that I'm missing some vital detail? Perhaps item 2?
0
 
LVL 12

Expert Comment

by:migel
ID: 8016838
hmm
ok I will check it in the test project
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 12

Expert Comment

by:migel
ID: 8019312
Ok
here is working code:
void CMainFrame::OnSplit()
{
     // TODO: Add your command handler code here
     CWnd* pWndChild = GetWindow(GW_CHILD);
     m_wndSplit.CreateStatic(this, 1, 2);
     CCreateContext context;
     context.m_pCurrentDoc = this->GetActiveDocument();
     context.m_pCurrentFrame = this;
     context.m_pLastView = NULL;
     context.m_pNewDocTemplate = NULL;
     context.m_pNewViewClass = RUNTIME_CLASS(CMyFormView);
     m_wndSplit.CreateView(0, 0, RUNTIME_CLASS(CMyFormView), CSize(100,100), &context);
     int nID = m_wndSplit.IdFromRowCol(0, 1);
     ::SetWindowLong(pWndChild->GetSafeHwnd(), GWL_ID, nID);
     pWndChild->SetParent(&m_wndSplit);
     CRect rc;
     GetClientRect(&rc);
     m_wndSplit.MoveWindow(&rc);
     m_wndSplit.RecalcLayout();
}
0
 
LVL 8

Author Comment

by:Answers2000
ID: 8023050
Close not quite

1. It creates the new view on the left (should be right)

2. The new view is supposed to be my new view class, the list properties thing. I changed CMyFormView in code to CEditView for testing for now (as my existing form view can't handle being alive twice)

3. This works, with above limitations except the new view overlaps the toolbars (and possibly status - not sure as it gets repainted immediately). If you mouse over where the toolbar should be, you can then get bits of the toolbar to leak thru. The MoveWindow is definitely necessary - but it needs to be the rect minus the (dockable) toolbars etc.  Incidentally if you resize the window once or twice or start dragging the toolbar around, you can get it to recover, so the toolbar stops leaking into the view.
0
 
LVL 12

Expert Comment

by:migel
ID: 8023629
Okay
1. It isn`t matter - the technique works :-)
2. See above
3. Hmmm it is bad...
so You have to use this code
{
        RECT rcWindow;
         RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery, &rcWindow);
}

instead GetClientRect();
0
 
LVL 12

Accepted Solution

by:
migel earned 800 total points
ID: 8062865
?
0
 
LVL 8

Author Comment

by:Answers2000
ID: 8064035
I'll give you the points

I'm probably not going to go this route in the app now (going with modeless floating windows).  The other properties list question is going to get some action soon.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
If you use Adobe Reader X it is possible you can't open OLE PDF documents in the standard. The reason is the 'save box mode' in adobe reader X. Many people think the protected Mode of adobe reader x is only to stop the write access. But this fe…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Suggested Courses
Course of the Month13 days, 17 hours left to enroll

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question