Open-file dialog returning gibberish?

Publicnamer

I've tried using the open-file dialog to get a filename or file path and it consistently gives a gibberish value:

QString filename = QFileDialog::getOpenFileName(this,
                "Open text file", getenv("HOME"), "Text Files (*.txt)");
        const char *path = filename.toStdString().c_str();

The result is always a string that is nothing like the filename that was selected.
What is the correct way to get a C string path or filename from QFileDialog?

Christian Ehrlicher

@Publicnamer said in Open-file dialog returning gibberish?:

The result is always a string that is nothing like the filename that was selected.

I would be surprised if you would return something valid... You create a temporary std::string which goes out-of-scope immediatelly.
Why do you need a const char* for this at all?

QString filename = ...
std::string filenameStd = filename.toStdString();
const char *path = filenameStd .c_str();

SGaist

Hi,

@Publicnamer said in Open-file dialog returning gibberish?:

const char *path = filename.toStdString().c_str();

You are keeping the address of a temporary std::string that you convert to a c string.

So there's a high chance that path points to garbage memory.