Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Enabled
INTERACTIONTAG_ENABLEParameter: Tweakable
INTERACTIONTAG_TWEAKABLEParameter: Disable Viewport Selection
INTERACTIONTAG_SELECTParameter: When Selected
INTERACTIONTAG_SELECTEDTWEAKMODEParameter: Disable Transforms
INTERACTIONTAG_DISABLEMOVEParameter: Highlight Object
INTERACTIONTAG_HIGHLIGHTParameter: Hide Mouse On Drag
INTERACTIONTAG_HIDE_MOUSEParameter: Hide Object
INTERACTIONTAG_HIDE_OBJECTParameter: Scripting Language
INTERACTIONTAG_SCRIPT_LANGUAGEParameter: Script
INTERACTIONTAG_SCRIPT_PYParameter: Script
INTERACTIONTAG_SCRIPT_COFParameter: Edit Script
INTERACTIONTAG_EDIT_SCRIPTParameter: Use Right Mouse Button
INTERACTIONTAG_USERIGHTMOUSEParameter: Object Is Selected
INTERACTIONTAG_OBJECT_SELECTEDParameter: Object Is Highlighted
INTERACTIONTAG_OBJECT_HIGHLIGHTEDParameter: Object Is Being Tweaked
INTERACTIONTAG_OBJECT_TWEAKEDParameter: Mouse Button
INTERACTIONTAG_MOUSE_BUTTONParameter: X Mouse
INTERACTIONTAG_XMOUSEParameter: Y Mouse
INTERACTIONTAG_YMOUSEParameter: Pen Pressure
INTERACTIONTAG_MOUSE_PRESSUREParameter: Pen Tilt
INTERACTIONTAG_MOUSE_TILTParameter: Pen Angle
INTERACTIONTAG_MOUSE_ANGLEParameter: Mouse Wheel
INTERACTIONTAG_MOUSE_WHEELParameter: X Pixels
INTERACTIONTAG_XPIXELSParameter: Y Pixels
INTERACTIONTAG_YPIXELSParameter: Mouse Travel
INTERACTIONTAG_MOUSE_TRAVELParameter: Object Delta
INTERACTIONTAG_WORLD_DELTAParameter: Calculate Polygon Info
INTERACTIONTAG_USEPOLYINFOParameter: Live Update During Drag
INTERACTIONTAG_LIVEPOLYINFOParameter: Hit
INTERACTIONTAG_POLYINFO_HITParameter: Hit Point
INTERACTIONTAG_POLYINFO_HITPOINTParameter: Polygon Index
INTERACTIONTAG_POLYINFO_POLYGONParameter: Edge Index
INTERACTIONTAG_POLYINFO_EDGEParameter: Point Index
INTERACTIONTAG_POLYINFO_POINTParameter: Selection Tag
INTERACTIONTAG_POLYINFO_SELECTIONTAGParameter: Selection Tag Index
INTERACTIONTAG_POLYINFO_SELECTIONTAGINDEXParameter: Proxy Object
INTERACTIONTAG_PROXY_OBJECTParameter: Highlight Proxy Object
INTERACTIONTAG_HIGHLIGHT_PROXYParameter: Select Proxy
INTERACTIONTAG_SELECT_PROXYParameter: Transform Proxy
INTERACTIONTAG_TWEAK_PROXYParameter: Dynamic Proxies
INTERACTIONTAG_POLYINFO_USETAGPROXYParameter: Tag Proxy
INTERACTIONTAG_POLYINFO_TAGPROXY