An example function showing how to query command's argument from C++ MODO SDK.

cmdArgQuery.cpp

/*
 * This function allows for querying a command argument.
 * It's possible to set any other command's arguments first
 * prior to the query. This is done by passing a map with
 * argument name/value pairs.
 */
bool queryCmdArg(const char* cmdName, const char* argName, std::map<std::string, CLxUser_Value>& otherArgs, CLxUser_ValueArray& valArray)
{
	CLxUser_CommandService cmdSrv;
	CLxUser_Command cmd;
	
	if ( ! cmdSrv.NewCommand (cmd, cmdName) ) {
		return false;
	}
	
	CLxUser_Attributes cmdAttr;
	cmdAttr.set (cmd);

	// Set command arguments first, if any.
	if ( ! otherArgs.empty() )
	{
		std::map<std::string, CLxUser_Value>::iterator iter;
		for ( iter = otherArgs.begin(); iter != otherArgs.end(); ++iter ) {
			int argIndex = cmdAttr.FindIndex (iter->first);
			if ( argIndex >= 0 ) {
				unsigned int valueType = iter->second.Type();
				if ( valueType == LXi_TYPE_INTEGER ) {
					int value = 30;
					iter->second.GetInt(&value);
					cmdAttr.SetInt(argIndex, value);
				}
				else if ( valueType == LXi_TYPE_FLOAT ) {
					double value;
					iter->second.GetFlt(&value);
					cmdAttr.SetFlt(argIndex, value);
				}
				else if ( valueType == LXi_TYPE_STRING ) {
					std::string value;
					iter->second.String(value);
					cmdAttr.SetString (argIndex, value.c_str());
				}
			}
		}
	}

	int argIndex = cmdAttr.FindIndex (argName);
	
	if ( ! cmdSrv.QueryIndex (cmd, argIndex, valArray) || ! valArray.Count() ) {
		return false;
	}
	return true;
}