Please help, exiting from uninstall part

How to exit from the uninstall section
I want to do something like this.

Section "Uninstall"

IfFileExists "$INSTDIR\file.exe" 0 NoErrorMsg
MessageBox MB_OK "Note: $INSTDIR Problems with deleting a file"IDOK
NoErrorMsg:

but after hitting ok button I want the uninstaller to quit

Please help

Use the Abort command.