How to get a value to a dialog from another dialog ?

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Can I use AfxGetMainWnd()? It didn't work when I write like this:

C++

//in CLinkListDlg class:   

CString strName=((CAddDlg*)AfxGetMainWnd()->GetActiveWindow())->m_str_name;

Posted 30-Jul-10 23:52pm

zhangyanlin

Updated 31-Jul-10 0:32am

Sandeep Mewara

v2

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Comments

Sandeep Mewara 31-Jul-10 6:30am

Keep patience. People will respond as they get time. No point in posting junks as an answer to it.

Richard MacCutchan 31-Jul-10 6:59am

What didn't work? What result did you expect? Try explaining your problem in more detail and maybe someone can help you.

raju melveetilpurayil 31-Jul-10 13:54pm

did you understand someone put a code like this?

4 solutions

Solution 3

Why don't you just create a static class and put the variable in there (don't forget to make it public static as well). Then you can get to it from anyplace in the program.

Posted 31-Jul-10 1:20am

#realJSOP

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zhangyanlin 31-Jul-10 19:59pm

it is a variable of a editbox,so I can not do that

Solution 4

If you have two dialogues that have to communicate why not do something radical like pass the address of the one data has to be fetched from to the constructor of the one that wants to consume the data?

Then you don't have to mess about calling global functions, casting (you might like to use static_cast<> if you're hellbent on casting) and the code will work if you ever need to change the dialogue that's the main application window.

Once you've got that working the next thing to consider is whether the consuming dialogue actually needs to know everything about the producing dialogue. If it doesn't you can introduce another interface between the two dialogues that just supplies the data you need. This is really cool as it improves your ability to test your code by just giving the consuming dialogue the minimum it needs to do it's job.

Cheers,

Ash

Posted 31-Jul-10 10:51am

Aescleal

Solution 5

If the application is not supposed to be multithreaded and fairly simple, using good old global static variables will get you by this.

For data exchange, use the relevant event handlers.

Since you haven't posted anything but just a line of code, out of context, I assume that what you need is simple.

Posted 3-Aug-10 22:05pm

bleedingfingers

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CPallini · Accepted Answer · 2010-08-03T22:22:00

Solution 7

You may have a look at the following oldie-goldie article: "Dialogs Communication"[^].
:)

Posted 3-Aug-10 22:22pm

CPallini