XkbGetKeyVirutalModmap sends a request to the server to obtain the virtual modifier mappings for num keys on the keyboard starting with key first. It waits for a reply and returns the virtual modifier mappings in the server->vmodmap array of xkb. If successful, XkbGetKeyVirtualModMap returns Success. The xkb parameter must be a pointer to a valid Xkb keyboard description.
If the server map in the xkb parameter has not been allocated, XkbGetKeyVirtualModMap allocates and initializes it before obtaining the virtual modifier mappings.
If the server does not have a compatible version of Xkb, or the Xkb extension has not been properly initialized, XkbGetKeyVirtualModMap returns BadMatch. If num is less than 1 or greater than XkbMaxKeyCount, XkbGetKeyVirtualModMap returns BadValue. If any allocation errors occur, XkbGetKeyVirtualModMap returns BadAlloc.