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How to access Variables in different dialog box

Posted on 2013-06-14
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Last Modified: 2013-06-16
My application is a Dialog box. Within my app, there is a button, which when pressed another dialog appears.

My questions is, am I able to access Global Variables from here, and can I access controls as I normally would?

For instance, from the second dialog, I want to check the contents of an edit field in the first one.

Thank you
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Question by:edvinson
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3 Comments
 
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Expert Comment

by:jkr
ID: 39249102
If you have the window handle and the control IDs, you can just gather or set the data like in your own dialog. E.g.

#define ID_TEXTFIELD 1234 // finding that is the tricky part
HWND hwnd = FindWindow(NULL,_T("Dialog Title"));

TCHAR acText[256];

GetDlgItemText(hwnd,ID_TEXTFIELD,acText,256);

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by:edvinson
ID: 39250888
Ok, let me elaborate a bit...

My main dialog is defined as IDD_DIALOG1

I have another dialog ( which is not shown until a button is pressed ) defined as IDD_DIALOG2

Inside of IDD_DIALOG2 is a textfield, defined as IDC_PRINT.

Question:

How do I retrieve IDC_PRINT from IDD_DIALOG1?

Could I copy the value of IDC_PRINT to a global variable, and simply access it that way from IDD_DIALOG1? If so, how?

Thanks!
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Accepted Solution

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jkr earned 2000 total points
ID: 39251347
Just like in the above - if you have the definitions ready (which I assume you have, since both are in your app) all you need is the 2nd dialog's windoe handle:

TCHAR acText[256];

GetDlgItemText(hwndDlg2,IDC_PRINT,acText,256);
                                            

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