Add Database to old MFC app

Question

I'm a c# programer and have been given an old MFC c++ app that I need to add a database to in a Dialog form. I used the wizard to add a "MFC ODBC Consumer" to the app. This seems to work well and added the DataSet with the RFX definitions to the project. It did not add a view or the DFX. How would I add the view and link to my Dialog box controls?

Thanks in advance.

Answer 1

Wizard is not part of the C++ language. 

No data binding wizard for dialog-based apps in VC. If you use something like MVVM, you can write your data exchange code in DoDataExchange.

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Visual C++ MVP

Answer 2

I believe I'm down to one line to get this to work. The example I found has a line

m_pSet = &GetDocument()->m_UDataSet;

where you are setting the view class, m_pSet, to the dialog box, m_UDataSet.

In the example,

CUDataView - is main form or document.
CUDataSet* m_pSet
CUDataDoc
CudataSet m_UDataSet ;

In my code,

USBDataView- data set
CPub_Numbers* m_pSet

NumWatch - pop up dialog
CPub_Numbers m_Pub_Numbers ;

So m_UDataSet is of a document, in my code, NumWatch is of a dialog. So when I use code

m_pSet = &GetDocument()->m_NumWatch; <==error CDocument has no member "m_NumWatch"

so how do I set m_pSet to a pointer pointing to the dialog NumWatch?

Answer 3

GetDocument is function which gets a pointer to the view's document. So m_NumWatch is not a member of GetDocument .

Answer 4

The sample code is for the MFC add variable wizard which only support a formview, not a dialog.

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Answer 5

Is there a way to get a pointer to NumWatch since it is a dialog?

Answer 6

There are n no of way if it is your own dialog you can create object of your NumWatch class and can perform operation . If not you can use FindWindow() method to get the handle of the window . and if you want any child window on that then you can use EnumChildWindowProc() on your main dialog handle.

Thanks

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Rupesh Shukla

Answer 7

Do it yourself. When you create the dialog you can save a pointer to it for future use. Store the pointer in the class that will need it.