qt - QProcess 无法将命令写入程序

Question

所以我想用QProcess打开stockfish并编写命令isready，stockfish回复readyok。我在终端中尝试了完全相同的命令，它工作正常。但是，当我尝试在 QProcess 中执行此操作时，它只会在 stockfish 打开时读取开头行“Stockfish 开发人员的 Stockfish 100521（请参阅 AUTHORS 文件）”。在我发出命令后，它没有回复“readyok”。

我写错了我的命令还是我的等待命令错了？如果这个问题的结构或支持不正确，我很抱歉，因为我是新手。

QProcess OProcess;
QString Command;    //Contains the command to be executed
QStringList args;   //Contains arguments of the command

Command = "path/Stockfish/src/stockfish";
args<<"";

OProcess.start(Command,args,QIODevice::ReadWrite); //Starts execution of command
OProcess.waitForFinished();                       //Waits for execution to complete

QString StdOut      =   OProcess.readAllStandardOutput();  //Reads standard output
QString StdError    =   OProcess.readAllStandardError();   //Reads standard error

qDebug()<< "\n Printing the standard output..........\n";
qDebug()<< endl<<StdOut;
qDebug()<<"\n Printing the standard error..........\n";
qDebug()<<endl<<StdError;

OProcess.write("isready");
OProcess.waitForFinished();  //Waits for execution to complete

OProcess.waitForReadyRead();

 StdOut      =   OProcess.readAllStandardOutput();  //Reads standard output
 StdError    =   OProcess.readAllStandardError();   //Reads standard error

        qDebug()<< "\n Printing the standard output:\n";
        qDebug()<< endl<<StdOut;
        qDebug()<<"\n Printing the standard error:\n";
        qDebug()<<endl<<StdError;
return 0;

Answer 1

您需要等待触发此信号 void readyReadStandardError() void readyReadStandardOutput() 并在从标准错误或输出缓冲区读取它们之后。