We help IT Professionals succeed at work.

Get  Frame pointer in the View

ghimireniraj
ghimireniraj asked
on
604 Views
Last Modified: 2013-11-20
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
Comment
Watch Question

try
viewN->SetAvtivwWindow();
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

Vinayak KumbarSr Program Manager

Commented:
Hi,

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

Then I think MFCAnswer's solution will work.

VinExpert

Commented:
Have you tried

SetActiveWindow((CView *)viewN,TRUE);

?


regards,
Mike.

Author

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






Have you tried Mike's solution?
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION

Author

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.

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.
what happened ?

Author

Commented:
thx
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.