Displays the dialog
[C++]
BOOL Show();
This function is used to display a dialog.
            It returns TRUE if the user pressed OK and FALSE if the user cancelled.
             During the lifetime of the function, the overrideable event handlers 
            OnTrigger(),
            OnOK(),
            OnOption(),
            OnCheckBox() and
            OnListBox()
            may be invoked.
             The function EndDialog()
            may be called from any overrideable function to close the dialog and to 
            set the return value of Show().
            
Header: xldialog.h