Utilizzo di MessageBox in Nsis

Sono standard in Nsis.

MessageBox MB_YESNO "YES, continue installing in your Winamp 3.x \
  directory.$\n$\n NO, install in your Winamp 2.x directory instead." \
  IDYES yeslabel IDNO nolabel
yeslabel:
  MessageBox MB_OK "You pressed yes"
  Goto done
nolabel:
  MessageBox MB_OK "You pressed no"
done:

Riferimenti

• WINAMP.COM | Forums - NSIS message box Q2