InstallAware

I have a text box that requires the user to enter in some text (product key). This text is validated with a dll function after the user presses the next button. If invalid, I display a message box and loop back to this dialog. If valid, I go to the next dialog.

Would it be possible to dynamically (as the user changes the text in the edit box) enable/disable the next button so it is disabled until the correct text is entered?

Thanks in advance

Sorry, this is not currently available.

It seems that the dialogs are completely one way. ie. you can retrieve data from them, but cannot send information back.

Of course you can send data back. Just associating a dialog control with a variable and writing to that variable from MSIcode, for example, is a way to set control default values. Just look at some of the pre-built dialogs and sample projects for examples.