CFD Online Discussion Forums - Reading forces within solver code

Hello FOAMers,

what would be the best way of reading forces within solver code? I'm calculating some cases with OF 1.6 via simpleFoam.
I noticed the function objects where pressure and viscous forces/moments are integrated over given patches. In forces.C

Code:

fm.first().first() (pressure force) or fm.first().second() (viscous force)

Code:

fm.second().first() (moment of pressure force) or fm.second().second() (moment viscous force)

prints out the data. Now i tried to catch the values within solver code (under consideration of included headers in forces.C) but it doesn't work.
I'm not familiar with the code conventions of OF! Any advice is much appreciated...

/Stefan