DropDMG & Codesigning

This might be a silly question but would I need to codesign my application (myapp.app) plus any additional files/folders for the or does the fact that DropDMG is now code-signed with a Developer ID certificate mean that users should be able to install my app on Mountain Lion without any issues?

DropDMG being codesigned only means that Mountain Lion doesn’t warn you about DropDMG itself being unsafe. For applications that you create, you would need to sign them with your Developer ID certificate.

(And, just to be clear, since this seems to be a common question: .dmg disk images themselves are not codesigned, only the .app or .pkg within.)