XkbSetModActionVMods - Man Page

void XkbSetModActionVMods (XkbAction act, unsigned short vmods);

act

action in which to set vmods

vmods

virtual mods to set

XkbSetModActionVMods sets the vmods1 and vmods2 fields of act using the vmods format of an Xkb modifier description.

Despite the fact that the first parameter of these two macros is of type  XkbAction, these macros may be used only with Actions of type XkbModAction and  XkbISOAction.