QT中调用外部程序_QProcess的使用

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1、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#includeintmain(intargc,char*argv[]){QApplicationa(argc,argv);QTextCodec::setCodecForTr(

2、QTextCodec::codecForLocale());QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());Processw;w.show();returna.exec();}//:main.cpp#include"process.h"#include#includeintmain(intargc,char*argv[]){QApplicationa(argc,argv);QTextCodec::setCodecForTr(QTextCode

3、c::codecForLocale());QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());Processw;w.show();returna.exec();}viewplaincopytoclipboardprint?//:process.h#ifndefPROCESS_H#definePROCESS_H#includeclassQLabel;classQLineEdit;classQProcess;classQPushButton;classQTextEdit;classP

4、rocess: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//PROC

5、ESS_H//:process.h#ifndefPROCESS_H#definePROCESS_H#includeclassQLabel;classQLineEdit;classQProcess;classQPushButton;classQTextEdit;classProcess:publicQWidget{Q_OBJECTpublic:Process(QWidget*parent=0,Qt::WFlagsflags=0);~Process();privateslots:voidrunClicked();voidreadOutput();priv

6、ate:QProcess*cmd;QStringoutput;QLabel*inputLabel;QLineEdit*inputEdit;QPushButton*runButton;QLabel*outputLabel;QTextEdit*outputEdit;};#endif//PROCESS_Hviewplaincopytoclipboardprint?//:process.cpp#include#include"process.h"Process::Process(QWidget*parent,Qt::WFlagsflags):QWidget(pa

7、rent,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;outputEdit->setReadOnly(true);QHBoxLayout*hlayout=newQHBoxLayout;hlayout->addWidget(inputEdit);hlayout->addWidge