QProcess problem: compile well but output error

[jx324]

Hi everyone,

I have a problem as written in title. Here are the codes:

Window::Window()
{
 
    QGroupBox *echoGroup = new QGroupBox(tr("Anscare"));
 
    QLabel *echoLabel = new QLabel(tr("File:"));
    QPushButton *browse = new QPushButton(tr("browse.."));
    QPushButton *convert = new QPushButton(tr("convert"));
    echoLineEdit = new QLineEdit;
    echoLineEdit->setFocus();
 
    connect(convert, SIGNAL(clicked()),this, SLOT(runAnscare()));
    connect(browse, SIGNAL(clicked()),this, SLOT(getPath()));
 
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(echoGroup, 0, 0);
 
    setLayout(layout);
 
    setWindowTitle(tr("WinCares"));
}
 
void Window::runAnscare()
{
  convert->setEnabled( false );
 
  if( process )
    delete process;
  process = new QProcess( this );
 
  connect( process, SIGNAL(readyReadStandardOutput()), this, SLOT(handleReadStandardOutput()));
 
  process->start( "anscares.exe ");
}
 
void Window::handleReadStandardOutput()
{
  QString string=echoLineEdit->text();
  QFileInfo fi(string);
  QString name=fi.fileName();
  int i=name.size(); 
  name.remove(i-4,4);
  process->write(name.toAscii()+"\n");
 
}

Window::Window()
{

    QGroupBox *echoGroup = new QGroupBox(tr("Anscare"));

    QLabel *echoLabel = new QLabel(tr("File:"));
    QPushButton *browse = new QPushButton(tr("browse.."));
    QPushButton *convert = new QPushButton(tr("convert"));
    echoLineEdit = new QLineEdit;
    echoLineEdit->setFocus();

    connect(convert, SIGNAL(clicked()),this, SLOT(runAnscare()));
    connect(browse, SIGNAL(clicked()),this, SLOT(getPath()));
    
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(echoGroup, 0, 0);
 
    setLayout(layout);

    setWindowTitle(tr("WinCares"));
}

void Window::runAnscare()
{
  convert->setEnabled( false );
  
  if( process )
    delete process;
  process = new QProcess( this );
  
  connect( process, SIGNAL(readyReadStandardOutput()), this, SLOT(handleReadStandardOutput()));
  
  process->start( "anscares.exe ");
}

void Window::handleReadStandardOutput()
{
  QString string=echoLineEdit->text();
  QFileInfo fi(string);
  QString name=fi.fileName();
  int i=name.size(); 
  name.remove(i-4,4);
  process->write(name.toAscii()+"\n");
  
}

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Compile well and when "browse" button is pressed, echoLineEdit can show the path of file. But push the "convert" button, an error occurs: "something wrong with it"

Can anyone give me some hints?

Thanks.

[jacek]

process->start( "anscares.exe ");

Where is that file located?

But push the "convert" button, an error occurs: "something wrong with it"

Could you post the exact error message?

[jx324]

The executable file was located in the debug folder. The error shows simply :"an error occurs", that's why I cannot solve it.

Anyway, thanks for your reply.

[jpn]

Are you running the app via an IDE? If so, most likely the current working directory is not in debug nor release subfolder but one level up. See

• QCoreApplication::applicationDirPath()
• QDir::current()
• [WIKI]Current working directory[/WIKI]