Hello,

I'm working with FFDeviceCreateEffect function to create ForceFeedBack Effect. There are severals effect UUID :

kFFEffectType_ConstantForce_ID
kFFEffectType_RampForce_ID
kFFEffectType_Square_ID
kFFEffectType_Sine_ID
kFFEffectType_Triangle_ID
kFFEffectType_SawtoothUp_ID
kFFEffectType_SawtoothDown_ID
kFFEffectType_Spring_ID
kFFEffectType_Damper_ID
kFFEffectType_Inertia_ID
kFFEffectType_Friction_ID
kFFEffectType_CustomForce_ID

But, some of them require extras data structure in lpvTypeSpecificParams. How can I know which parameters structure to use ?
(FFPERIODIC, FFCONDITION, etc...)

David