callJohnShow() often lead to weird message popping out in the terminal "QProcess::start: Process is already running". As the doc says, If the "QProcess object is already running a process, a warning may be printed at the console, and the...
我试图在图形用户界面中使用QProcess同时运行多个python脚本。下面将执行第一个脚本,并为其他两个脚本抛出QProcess::start: Process is already running。def run(self): scripts = ['python ./scripts&#x 浏览135提问于2021-02-21得票数 1 回答已采纳 2回答 冻结后使用QProcess运行Python脚本 、、、 我正在使...
I would like know if it's possible to create a QProcess and initialize it to a process which is already running? My application starts an other application. So if my application is abnormally closed, when it will be restarted, I would like attach the other application. qt process qprocess...
根据文件的说法 QProcess::atEnd(),只有在进程未运行时才会返回true(QProcess::NotRunning)。你也是 当然 当你打电话时,这个过程并不真正完成 atEnd()还我没有在你发布的代码中看到它,所以我不能说。 您的myReadyReadStandardOutput() 信号是覆盖的 m_Proc::_out 每次新数据都有成员变量。根据您的系统(和Qt...
QProcess::start: Process is already running I can do a ps -ef|grep processName and find that it is indeed dead, but it's sitting in a defunct state which I think is preventing me from starting it again.What do I need to do to prevent this defunct state, or remove the defunct ...
QProcess is a class in the Qt C++ library that can be used to execute external processes and control their input and output. It provides functions to start and stop processes, read standard output and error, and set environment variables.Here are a few examples of how QProcess state can be...
QProcess is a class in the Qt framework that allows for the spawning and controlling of external processes. The waitForReadyRead function is a member function of the QProcess class that can be used to block the program until the external process sends data to the standard output or ...
The OpenMode is set tomode. If the QProcess object is already running a process, a warning may be printed at the console, and the existing process will continue running unaffected. 使用代码实例: 代码语言:javascript 复制 voidUnpack(){QProcesspExe(0);QString str7z;//命令exestr7z.append("...
If theQProcessobject is already running a process, a warning may be printed at the console, and the existing process will continue running unaffected. 使用代码实例: void Unpack() { QProcess pExe(0); QString str7z; //命令exe str7z.append("E:\\maozg tools\\OuterNetPacketMaker\\Bin\\7z...
pname + tr(" is already running.") ); }return; } statusBar()->showMessage( tr("Loading ") + p[ index ].runningMsg +"..."); QProcess* process =newQProcess(0); process->closeReadChannel( QProcess::StandardOutput ); process->closeReadChannel( QProcess::StandardError ); ...