Thread: Make a dialog show up

Add a handler function for the button. I believe you can do this by right clicking on the button and choose from the popup menu.

In the handler function, declare an instance of your dialog class. Call DoModal for the dialog.

Did you want the button to open and close the dialog? If you do you will have to make a modeless dialog. The above is for a modal dialog. A modal dialog will retain focus until it is closed. A modeless dialog allows you to switch back to the main app while the dialog is still open. For a modeless dialog you have to call Create and then ShowWindow. Also the modeless dialog can't be a local instance in the button handler function. It will have to be global or a member variable, if using MFC.

You can pass a pointer to the variables to the second dialog. Change the values when the second dialog is open, then if you are calling DoModal() to open the second dialog you can do something like this :

Code:

... inside button handler of first dialog.
    // open second dialog
    CSecondDialog dlg;

    dlg.m_pSomeVariable = &m_FirstDialogVariable;

    if( dlg.DoModal() == IDOK )
    {
        // here you can use the updated value for m_FirstDialogVariable.
    }