QT 使用QProcess 调用外部程序并截取输出流

 

隐藏行号 复制代码 ？ 这是一段程序代码。

1. connect(&mProcess, SIGNAL(readyReadStandardOutput()), this,    SLOT(redFromStdOut())); 
   

2. connect(&mProcess, SIGNAL(readyReadStandardError()), this,    SLOT(redFromStdErr())); 
   

3. connect(&mProcess, SIGNAL(error(QProcess::ProcessError)), this, SLOT(processError(QProcess::ProcessError)));
   

4. connect(&mProcess, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(processFinished(int,QProcess::ExitStatus)));
   

隐藏行号 复制代码 ？ 这是一段程序代码。

1. void FloodForecast::redFromStdOut()
   

2. {
   

3.     ui.textBrowse->append(mProcess.readAllStandardOutput());
   

4. }
   

6. void FloodForecast::redFromStdErr()
   

7. {
   

8.     ui.textBrowse->append(mProcess.readAllStandardError());
   

9. }
   

11. void FloodForecast::processError(QProcess::ProcessError error)
    

12. {
    

13.     if(error==QProcess::FailedToStart)
    

14.     {
    

15.         ui.textBrowse->append("<font color=red>程序启动失败.</font>\r\n");
    

16.     }
    

17. }
    

19. void FloodForecast::processFinished(int exitCode,QProcess::ExitStatus exitStatus)
    

20. {
    

21.     if(exitStatus == QProcess::CrashExit)
    

22.     {
    

23.         ui.textBrowse->append("<font color=red>程序异常终止.</font>\r\n");
    

24.     }
    

25.     else
    

26.     {
    

27.         ui.textBrowse->append("<font color=green>程序正常结束.</font>\r\n");
    

28.     }
    

29. }