Error 2 when use QFileDialog::getOpenFileName

Andrew23

When I use the QFileDialog::getOpenFileName I get a lot of the same error in the Application Output window

connect( ui->LoadFilePushButton, &QPushButton::clicked, this, &MyQDialog::LoadFile );

void MyQDialog::LoadFile()
{
    QString fileName = QFileDialog::getOpenFileName( this, tr( "Open File" ), QDir::homePath(), tr( "Files (*.csv)" ) );

    [...]
}

When I click the button I get in the output

Error 2 in function StorageSystem::Registry::ATypeIOHandlerBase<4,0>::Read: RegGetValueW raised error 2: Impossibile trovare il file specificato.
Error 2 in function StorageSystem::Registry::ATypeIOHandlerBase<4,0>::Read: RegGetValueW raised error 2: Impossibile trovare il file specificato.
Error 2 in function StorageSystem::Registry::ATypeIOHandlerBase<4,0>::Read: RegGetValueW raised error 2: Impossibile trovare il file specificato.
Error 2 in function StorageSystem::Registry::ATypeIOHandlerBase<4,0>::Read: RegGetValueW raised error 2: Impossibile trovare il file specificato.

[and so on...]

Why?

SGaist

Hi,

Which version of Qt are you using ?
On which OS ?
What does QDir::homePath return ?

Andrew23

@SGaist I'm using Qt 6.4.3 on Windows 10 and QDir::homePath return true

JonB

@Andrew23 said in Error 2 when use QFileDialog::getOpenFileName:

QDir::homePath return true

It's not a boolean. We want to know what your call to QDir::homePath() returns, to make sure it's not empty. And assuming it's not empty, can you confirm that the directory exists?

It looks to me as though a Windows registry value cannot be found. Windows system call RegGetValueW() (https://learn.microsoft.com/en-us/windows/win32/api/winreg/nf-winreg-reggetvaluew) returns

If the lpValue registry value does not exist, the function returns ERROR_FILE_NOT_FOUND.

and it would not surprise me if it returns same if lpSubKey cannot be found too.

Don't worry too much about the use of the word "file" here, it does not really mean an actual file.

Why it is happening, and whether it is intended or matters, I do not know.