How to change active launch configuration in Eclipse CDT

Feeling rather dumb: I have a C++ project, using Eclipse CDT (Eclipse 3.6, CDT 1.3.1).

I have defined more than one launch configuration: each points to a different executable within the project. But, when I press F11 to deb开发者_运维技巧ug, Eclipse always loads the first configuration, and I can find no way to make it launch the 2nd one instead.

Surely this deserves a menu or dialog setting somewhere?

For each of your projects: Project > Properties > C/C++ Build > Manage Configurations... > Set Active