How to set Member variable as extern variable [modified]

[Lost User]

Now　here is a class

class CPipeLineApp: public CWinApp
{
public:
CDengLu* dgDlg;
.......
}

I want to set dgDlg as a extern variable so that I can call dgDlg in class CMainFrame. dgDlg has variables :name and pass. I want to call them too. Please lend me a hand.

modified on Wednesday, March 16, 2011 8:43 PM

[David Crow]

Jokcy wrote:

I want to set dgDlg as a extern variable so that I can call dgDlg in class CMainFrame.

As it is, dgDlg can be accessed from any CMainFrame method.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather

[Albert Holguin]

You don't have to set that as an extern, its public and part of CMainFrame... means you should be able to reach it from any CMainFrame... what are you trying to do?

[Lost User]

How?

[Lost User]

I'm awfully sorry.I've made a mistake.The question has been modified.Please help me.

[Lost User]

I'am so sorry .I've made a serious mistake.

class CPipeLineApp : public CWinApp
{
public:
CDengLu* dgDlg;
.....
};

I want to call dgDlg in class CMainFrame. I also want to call dgDlg's variables: name and pass Forwarding your help.

[Ozer Karaagac]

As far as I understand your question, you can access it like below.

((CPipeLineApp*)AfxGetApp())->dgDlg;

[Albert Holguin]

still not sure what the problem is... if CPipeLineApp is derived from CWinApp, then he owns the CMainFrame, so you have complete access to it...

[Albert Holguin]

...I'm thinking you don't really know the MFC framework?

[Albert Holguin]

ozer's right... my 5! [i forgot you can rate these!]

[Lost User]

:( I'am a green hand.

[Albert Holguin]

see what ozer wrote above... i think i misunderstood your question, i thought you were trying to access cmainframe from cwinapp, a trivial operation, but you're really trying to access dgDlg (who is owned the cwinapp) from the cmainframe... that's not as trivial (but almost... ;P ) Happy coding! :)

[Lost User]

Thank you for you method! I've got it.:thumbsup: ;) :-D

[Albert Holguin]

don't forget to vote his answer up as good! ...i just had someone come around and downvote some of my posts :mad:

[Ozer Karaagac]

Thanks. :)

Time is never on our side! -- Albert Holguin

[Albert Holguin]

interesting quote... sounds familiar... :laugh:

[Ozer Karaagac]

But, I couldn't find out how I could save it as default in my settings. Do you know how?

[Albert Holguin]

Have no idea! ...i've only recently become an active participant in this forum... :doh:

[Lost User]

？I think it will save auto automatically.When close the work space ,it'll warn you.