Open file with double click, syntax error

[A Former User]

Hi everyone!

I want to open a .htm file in my application by double clicking.
So i have written These Code in main.cpp:

for ( int i = 1; i < argc; ++i )
    mainWin.load(argv[i]);

And These in mainwindow.h

void load(char *fileName);

And now i'm getting These Errors:

C:\Users\Henrik\Documents\TextPad\mainwindow.h:147: Fehler: 'void MainWindow::load(char*)' is private
 void load(char *fileName);
      ^

C:\Users\Henrik\Documents\TextPad\main.cpp:28: Fehler: within this context
     mainWin.load(argv[i]);
                         ^

Does anybody know why the Errors are there and how to fix them?

Thanks,
Henrik

[raven-worx]

as the error says the load() method is private.
But you are trying to access it "from the outside" of the class. Declare it as public.

[jsulm]

As the error message already says: you put load() in private section in your class, put it in public.

[A Former User]

@jsulm

C:\Users\Henrik\Documents\TextPad\main.cpp:28: Fehler: undefined reference to `MainWindow::load(char*)'

C:\Users\Henrik\Documents\build-TextPad-Desktop_Qt_5_5_1_MinGW_32bit2-Debug\debug\moc_mainwindow.cpp:350: Fehler: undefined reference to `MainWindow::load(char*)'

[jsulm]

Did you define load() method?
I mean (usually) in cpp file:

void MainWindow::load(char*)
{

}

How experienced are you with C++?

[A Former User]

@jsulm
No, i don't...
What should i write in the method?

My experiences are not so good... I read a lot of book... Reading the Code is no Problem but writing is very hard for me...

[jsulm]

The method can be empty like in the example I gave.
What you should write there is something you should know as it is your program.
I guess you want to open a file and read its content, right? Then do it using QFile.

[A Former User]

@jsulm
Yes i want to open the file...

 QString fileName = QFileDialog::getOpenFileName(this, tr("Öffnen..."),
                                                   QString(), tr("TextPad 1.0 (*.htm);;"));
   QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);

   QFile file(fileName, this);

   if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
   {
      qDebug() << "Fehler beim Öffnen der Datei";
   }

   if (document())
   {
      document()->clear();
   }

   document()->setHtml(file.readAll());
   file.close();

Something like that?

[jsulm]

You already pass file path as parameter to the load() method.
In this case there is no need for:

QString fileName = QFileDialog::getOpenFileName(this, tr("Öffnen..."),
                                                   QString(), tr("TextPad 1.0 (*.htm);;"));

// This line does not make any sence because you do not use its return value
QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);

[A Former User]

@jsulm
Yes. I tried before your post and it works!

Thank you all...