Qt-process之invoke&client、进程通信.rar

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QDebug> #include <QFile> #include <iostream> #include <windows.h> #include <stdio.h> #include <QFuture> #include <QtConcurrent/QtConcurrent> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); setWindowTitle("client"); QFuture<void> f1 = QtConcurrent::run(this, &MainWindow::readstdin); connect(this,&MainWindow::sig_receivedCommand, this, [&](QString text){ ui->textBrowser->append("[读取标准输入 ] "+ text); }); connect(this, &MainWindow::sig_log, this, &MainWindow::slot_print); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_btn_sendOutputToInvoker_clicked() { QString text = ui->lineEdit->text(); if(text.isEmpty()) return; #if 0 QFile fileout; if(fileout.open(stdout,QIODevice::WriteOnly)){ fileout.write(text.toStdString().c_str()); }else{ printErr("open fail"); } fileout.close(); #else std::cout << text.toStdString() << std::endl; #endif } void MainWindow::printErr(const QString &errText) { QFile fileerr; if(fileerr.open(stderr,QIODevice::WriteOnly)){ fileerr.write(errText.toStdString().c_str()); } fileerr.close(); } void MainWindow::on_btn_sendErrToInvoker_clicked() { QString text = ui->lineEdit->text(); if(text.isEmpty()) return; #if 1 QFile fileerr; if(fileerr.open(stderr,QIODevice::WriteOnly)){ fileerr.write(text.toStdString().c_str()); } fileerr.close(); #else std::cerr << text.toStdString() << std::endl; #endif } void MainWindow::slot_print(const QString &text) { ui->textBrowser->append("[读取标准输入 ] "+ text); } void MainWindow::readstdin() { bool ok = true; char chBuf[4096]; DWORD dwRead; HANDLE hStdinDup; const HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE); if (hStdin == INVALID_HANDLE_VALUE) return; DuplicateHandle(GetCurrentProcess(), hStdin, GetCurrentProcess(), &hStdinDup, 0, false, DUPLICATE_SAME_ACCESS); CloseHandle(hStdin); while (ok) { ok = ReadFile(hStdinDup, chBuf, sizeof(chBuf), &dwRead, NULL); // emit sig_log(QLatin1String("ok is:")+QString::number(ok)); if (ok && dwRead != 0) { emit sig_receivedCommand(QString::fromUtf8(chBuf, dwRead)); } } }