"Next" button functionality
Hello everyone!
I have created a custom page using nsDialogs. On that page there is a field and a button. Using them user should choose a file, that will be written in .ini later.
I want to check file existence and block user to go to next page, untill he(she) selects the correct file.
So I need to operate with function used, then "Next" button is pressed.
Anyone can help me?
Please!!! :(