QT中调用外部程序：QProcess的使用本文通过QProcess，实现了在Qt中调用外部程序（控制台程序），并将输出重定向到了一个QTextEdit里。效果如下图所示：运行界面如下：程序共包含以下有一个文件：viewplaincopytoclipboardprint?//:main.cpp#include"process.h"#include<QApplication>#include<QTextCodec>intmain(intargc,char*argv[]){QApplicationa(argc,argv);QTextCodec::setCodecForTr(QTextCodec::codecForLocale());QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());Processw;w.show();returna.exec();}//:main.cpp#include"process.h"#include<QApplication>#include<QTextCodec>intmain(intargc,char*argv[]){QApplicationa(argc,argv);QTextCodec::setCodecForTr(QTextCodec::codecForLocale());QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());Processw;w.show();returna.exec();}viewplaincopytoclipboardprint?//:process.h#ifndefPROCESS_H#definePROCESS_H#include<QWidget>classQLabel;classQLineEdit;classQProcess;classQPushButton;classQTextEdit;classProcess:publicQWidget{Q_OBJECTpublic:Process(QWidget*parent=0,Qt::WFlagsflags=0);~Process();privateslots:voidrunClicked();voidreadOutput();private:QProcess*cmd;QStringoutput;QLabel*inputLabel;QLineEdit*inputEdit;QPushButton*runButton;QLabel*outputLabel;QTextEdit*outputEdit;};#endif//PROCESS_H//:process.h#ifndefPROCESS_H#definePROCESS_H#include<QWidget>classQLabel;classQLineEdit;classQProcess;classQPushButton;classQTextEdit;classProcess:publicQWidget{Q_OBJECTpublic:Process(QWidget*parent=0,Qt::WFlagsflags=0);~Process();privateslots:voidrunClicked();voidreadOutput();private:QProcess*cmd;QStringoutput;QLabel*inputLabel;QLineEdit*inputEdit;QPushButton*runButton;QLabel*outputLabel;QTextEdit*outputEdit;};#endif//PROCESS_Hviewplaincopytoclipboardprint?//:process.cpp#include<QtGui>#include"process.h"Process::Process(QWidget*parent,Qt::WFlagsflags):QWidget(parent,flags){inputLabel=newQLabel(tr("请输入命令："));inputEdit=newQLineEdit;runButton=newQPushButton(tr("运行"));outputLabel=newQLabel(tr("运行结果如下："));outputEdit=newQTextEdit;out