Closing one of two created windows

[Ajan 0]

I created a program which operates on one main window, it also has a button which opens second window. When I open the second window and clic on the close button in the corner of the first window the program closes the second window. It is rarely used as people would usually close the second window but still I guess it is some king of flaw.

I don't know how to change it though.

I would appreciate any help.

[GaryFrost 13]

To me this wouldn't be a flaw, with-out seeing your code I'm guessing that the main window does an exit if $GUI_EVENT_CLOSE is triggered.

If you don't wan't them closing the app, you could hide the main window until the second window closes.