Creating a DialogBox from within a DialogBox

[NormRumac]

Hi.

I have one dialog box window containing a button, which, once the user clicks on it, pops up another dialog box prompting the user for some input.

The code is (something) like this:

BOOL CALLBACK DlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDC_BUTTONPRESS:
DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE (IDD_GETUSERINPUT),hwnd, UserInputDlgProc);
break;
}
.
. <= rest of code here
.
}

The code works from the sense that the 2nd dialog box pops up when the user clicks the button. However, what is the *correct* way to obtain the inputted user value from the 2nd dialog box? The above function needs to get the value from that dialog box and do something with it.

I thought of creating a global variable that can be written to within the 2nd dialog box's function, but this just doesnt seem like good programming practice. And not only that, I am getting strange bugs (race conditions?) in my program that makes me very suspicious about the manner in which I implemented this code.

Any Ideas? Is there something fundamentally wrong with embedding one dialog box within another dialog box?

Any help is greatly appreciated.

Thanks,
--Norm

 

[MKuiper]

The EndDialog function, which ends the second dialog box, accepts a return-value parameter (EndDialog ( hDlg, ReturnValue )), which you can obtain in the calling procedure like this: ReturnValue = DialogBox ( ... );

With appropriate type casting the return value can be (a pointer to) any type.


Marcel

 

[woogoo]

Hi,

I also adopt this approach as well. However, what I do is similar to what Mercel suggests but I create a struct(ure) to represent the data in the &quot;popup&quot; dialog box.

Then create the dialog using DialoxBoxParam() and pass the address of the structure to the box. In the Callback function for the &quot;popup&quot; I have a static pointer to the struct. I assign the address to this in the WM_INITDIALOG, then in my IDOK I copy the Data into the struct's members.

So, when the popup dialog ends I have access to what was entered.

HTH

P.S. I know this post is old but I've only just signed up and I saw you were monitoring this so I though I would share what I do with you.

 

[NormRumac]

Thanks for the info. I'm doing something similar to that now also.

--Norm