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Get Frame pointer in the View

I have created a SDI interface application and in that application with the class wizard have added two more views

and in each view's on draw function have code to textout three diff strings.

Now what i have done is that i have defined a pointer each for the 3 views in the CMain Frame class

like,

CMainFrame ....
{

public:

CComdirView * view1;
BriefView  * view2;
DescView * view3;

...

}

Now in the
OnInitialUpdate()

for each views
i have written

XXX::OnInitialUpdate()
{
///N is 1 2 3
GetParentFrame()->viewN=this;
}

Now i have created  menu and comands for each three views in the frame window


in each command function


CMainFrame::OnXXX()
{
//n=1,2,3
SetActiveWindow(viewN,TRUE);
}

but it says you can't convert from
CComdirView
or
DescView
or
BriefView

to Cview

What is the prob?

How can i solve it?




Now the prob is
0
ghimireniraj
Asked:
ghimireniraj
1 Solution
 
MFCAnswerCommented:
try
viewN->SetAvtivwWindow();
0
 
MFCAnswerCommented:
here is some code to switch views in sdi

CView* pOldView = GetActiveView();
CView* newView = new UrnView();

CCreateContext context;
context.m_pCurrentDoc = pOldView->GetDocument();
newView->Create(NULL,NULL,WS_BORDER,CFrameWnd::rectDefault,this,n,&context);
newView->OnInitialUpdate();
SetActiveView(newView);
newView->ShowWindow(SW_SHOW);
RecalcLayout();

here n is ur nth view and
put this code in CMainFrame

0
 
Vinayak KumbarSr Program ManagerCommented:
Hi,

Where exactly that error is coming?. Is it in
SetActiveWindow(viewN,TRUE);?

Then I think MFCAnswer's solution will work.

VinExpert
0
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MDarlingCommented:
Have you tried

SetActiveWindow((CView *)viewN,TRUE);

?


regards,
Mike.
0
 
ghimirenirajAuthor Commented:
I have tried to switch between views and have done it sucessfully between 3/4 views and it works fine but i wanted to do that in the structure i described in this question .

The reason being that if i can store the pointers of all the views in my main frame class on their first construct i can switch between them
with with just two lines when ever i want

ie
SetActiveView(...stored view pointer);
...xx->ShowWindow(..);

and further more if i can acess my main frame pointer from my views i can switch between views from buttons in my view window.

Well but i think there are some fundamental mistakes in my structure
(architecture)   .

Can you figure out what it is?


Niraj






0
 
pagladasuCommented:
Have you tried Mike's solution?
0
 
MFCAnswerCommented:
XXX::OnInitialUpdate()
{
///N is 1 2 3                       GetParentFrame()->viewN=this;
}

here oninitialupdate of the views is not called by default for your 2nd and 3rd views because they are not created and
activated by documenttemplate.

do you  think when you call the follwing handler the viewn is pointing to valid memory ?
CMainFrame::OnXXX()                      {
                    //n=1,2,3
                      SetActiveWindow(viewN,TRUE);
}
0
 
ghimirenirajAuthor Commented:
Thanks MFCanswers for you comment .


Are views created every time  i want to view them and destroyed every time i switch to next view.

If that is the case i think the pointers will be no use storing.

So what do you think is the solution  when i want to switch to a another view from say a command from a button in the client are a of the view that i am currently in ?

May be like making use of self generated messages.

Thank you.

0
 
MFCAnswerCommented:
In MDI u can have many document templates created at a time and
u can keep switching between them.
I do not know how to do it in SDI.

For the functionality you are looking for. jus add the button in the view and then put the handler in mainframe so that u can change views from one to another. Yes, u have to create it every
time in the handler.
0
 
MFCAnswerCommented:
what happened ?
0
 
ghimirenirajAuthor Commented:
thx
0

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