CUsefulSplitterWnd (An Extension to CSplitterWnd)

Hi First of all congratulations, great work.
I use your class and I have a little problem. I try to discribe it: I want to print the right view. On the left view I ve to click for changing the view on the right side, the focus is on the left splitter and when I click directly on printing. What happens: the printing message goes to the left splitter not to the right one.
When I click into the right splitter and than on printing it works.

My question is what must I do to set the focus automatically on the right splitter. I want to do it always.

I hope you understand what I want. Perhaps it is easy to solve Poke tongue | ;-P

and you can help me

thanks
yummi

I think its all related to how MFC does its printing - I think by default it will print the first view in its list of views - what you have to do is override this default mechanism and make it print the second view instead - I think there is a command message you can intercept ID_FILE_PRINT that may help you

Technically speaking the dictionary would define Visual Basic users as programmers.
But here again, a very generalized, liberal definition is being employed and it's wrong
- just plain wrong - Tom Archer 5/12/02

Hi
First of all thank you for your answer.
I noticed the following: when I don't click on the second pane (view) and I changed the view by clicking on another item in the first pane the algorithm set always the new view as active.
When I click in the view pane and after I do this I click in the first pane to change the view, the ActivateView function will not be called, because of that the printing message receives in the first pane (the selecting area).
I make the following changes in the function ReplaceView:

<br />
if (pActiveView==NULL || pActiveView==GetPane(row,col))<br />
    bSetActive=TRUE;<br />
else<br />
    bSetActive=TRUE;//FALSE;<br />

so that bSetActive always be TRUE (I show it on that way so that you can find it on your code)
Because of that here

<br />
if (bSetActive==TRUE)<br />
      GetParentFrame()->SetActiveView(pNewView);      <br />

the new View always get the active part.

I don't know if there is any secondary effect on your algorithm?

I Hope you understood whatv I mean.
Thanks
yummi

This class clarified a lot for me and made my life a little happier today; thanks a bunch!!! Great work.

I also thank you...as it is what I was looking for also!!

Everybody gotta be somebody

This was just what i was looking for!

glad to help - just remember to look at some of the forum messges as you may have problems that the others have fixed

Stupidity dies.
The end of future offspring.
Evolution wins.
- A Darwin Awards Haiku

Please remember to call OnInitialUpdate() in Replace view as pointed out by salinas in
http://www.codeproject.com/splitter/usefulsplitter.asp?df=100&forumid=260&select=91652#xx91652xx

C#

BOOL CUsefulSplitterWnd::ReplaceView(int row, int col,CRuntimeClass * pViewClass,SIZE size)
{
  CCreateContext context;
  BOOL bSetActive;
	       
   
  if ((GetPane(row,col)->IsKindOf(pViewClass))==TRUE)
       return FALSE;
   
   // Get pointer to CDocument object so that it can be used in the creation 
   // process of the new view
   CDocument * pDoc= ((CView *)GetPane(row,col))->GetDocument();
   CView * pActiveView=GetParentFrame()->GetActiveView();

   if (pActiveView==NULL || pActiveView==GetPane(row,col))
      bSetActive=TRUE;
   else
      bSetActive=FALSE;

    // set flag so that document will not be deleted when view is destroyed
   if (pDoc!=NULL) pDoc->m_bAutoDelete=FALSE;    
    // Delete existing view 
   ((CView *) GetPane(row,col))->DestroyWindow();
	
    // set flag back to default 
    if (pDoc!=NULL) pDoc->m_bAutoDelete=TRUE;
 
    // Create new view                      
   
   context.m_pNewViewClass=pViewClass;
   context.m_pCurrentDoc=pDoc;
   context.m_pNewDocTemplate=NULL;
   context.m_pLastView=NULL;
   context.m_pCurrentFrame=NULL;
      
   CreateView(row,col,pViewClass,size, &context);   
   
   CView * pNewView= (CView *)GetPane(row,col);   
   
   if (bSetActive==TRUE)
      GetParentFrame()->SetActiveView(pNewView);
   
   RecalcLayout(); 
   pNewView->OnInitialUpdate();

   GetPane(row,col)->SendMessage(WM_PAINT);
   
   return TRUE;
}

I hope u guys don make the same mistake as me. Spend almost a week and asking around and still couln'd find the problem. Finally solved it and noticed salinas post too.

The above code also takes care of things when u don't use a document/view architecture, just a small check on pDoc!=NULL

or u can use WM_INITIALUPDATE as suggested by salinas post
then you would need to include this

C#

#include <afxpriv.h>

and change

C#

pNewView->OnInitialUpdate();

to

C#

pNewView->SendMessage(WM_INITIALUPDATE);

yes this could be useful to add - when I created this class (for a 16bit project ~ '95)I wasn't using CFormViews as the views in the splitters and thus I never noticed it was required - or maybe it is new to the 32 bit environment.

Stupidity dies.
The end of future offspring.
Evolution wins.
- A Darwin Awards Haiku

Hi,
I've got some trouble with ReplaceView, and it's hard to describe here, but i'll try. Smile | :)

I use 2 splitter to create 2 rows, and the first row has two columns. To create first row, i use CFrameWnd which has SplitterWnd.
But when i try to ReplaceView with this splitter (in CFrameWnd), it failed. i don't know exactly what happens, but maybe the CDocument failed (when document add view - that's is my debug).
So, what happens ???
Confused | :confused:

Do i create splitter right ? ( 2 col, 1 row splitter)
Help me, please. I give up !!! Cry | :((

Thanks,

nvhoang

sorry I haven't been receving emails from this article due to a change of email address - and I forgot to update codeproject.

do you still require assistance?

Stupidity dies.
The end of future offspring.
Evolution wins.
- A Darwin Awards Haiku

so that CFormView can do some OnInitialUpdate job

It would be a lot of value to me if I could set a position past which the splitter bar cannot be moved. Seems like you need
to add a function to set the ClientRect region in which the
splitter bar can operate.

Thanks in advance for any help...

Do the following in your WM_MOUSEMOVE message handler of CSplitterWnd derived class.

I am assuming you have 2 panes and want to maintain minimum size for top pane. You can easily customise it to your needs.

void CMySplitterWnd::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
if( nFlags == MK_LBUTTON)
{
if (point.y <= MINHEIGHT) point.y = MINHEIGHT;
CSplitterWnd::OnMouseMove(nFlags, point);
}
else
CSplitterWnd::OnMouseMove(nFlags, point);
}

regards,
Aman

Thank you very much for your class!
It was very helpful to me.
Big Grin | :-D

Hi, I would like to use HS et VS Scroll bar with your Spitter windows class, but i dont know how to do it. Can you help me plz?
Tx Confused | :confused:

Seb

I'm very happy to know that people like u live on earth...
Tx for all.
Your tutorial was very usefull.

This is almost exactly like a Microsoft sample (http://support.microsoft.com/support/kb/articles/Q199/5/15.ASP) and you are missing calling the OnInitialUpdate on the newly created view.

maybe - but then I wrote the original of this code over 4 years ago when I was moving from Visual Studio 1.5

Holy Handgrenade of Antioch instructions

I wrote one line at the end of function ReplaceView
pNewView->OnInitialUpdate(); Smile | :)

Please pardon my weak English!

strange thing is - I have that in my code at home - which I put in for someone and I haven't posted it here as I lost my password to the account that posted this when my NT2000 upgrade from NT blew up - I also changed ISPs too - wierd

Holy Handgrenade of Antioch instructions

I am trying to use the SetBitmap function for a static picture control inside a dialog after it is being used as a replacement. When it gets to the line where SetBitmap is being called, I get an assertion failed error. The code works fine if the view is dialog is already viewable.

confused what does this have to do with the splitter window

Holy Handgrenade of Antioch instructions

Hi!
I have just started to develop in VC++ and I would like to ask you the following:

What if I want to have on the left pane three views similteniously: a treeview, an edit view and a dialog view

Thank you

what you will need is 3 splitter wnds

1 for the vertical splitter and 2 for the horizontal splitters

create the Vertical splitter first

create an horizontal splitetr and place it in the right pane of the vertical splitter.

create another horizontal splitter and place it in the bottom of the vertical splitter

now create your views 1 for the vertical splitter left pane, 1 for the 1st horizontal top pane and 1 each for the 2nd vertical splitters panes

the basic MFC project with Windows Explorer style should help work out how to do thi

CUsefulSplitterWnd (An Extension to CSplitterWnd)

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