[SOLVED]can't open file from qresources

Hamed

Hi.
I can't open a file that I added to my .qrc file.
here is my .qrc file :
<RCC>
<qresource prefix="/plane">
<file>j3pipercub.obj</file>
</qresource>
</RCC>

and this is how I call this file :
mesh = load_object(":/plane/j3pipercub.obj");

? Offline

Hi,
did you add the resouce file to your project file?

Hamed

yes this is how I did that :
RESOURCES = mresources.qrc

? Offline

Any errors or warnings when building the project?

Hamed

No, It just not load that .obj file.
I can load it by address in my pc but can't load it from resources.

? Offline

Did you try removing the build directory and doing a complete rebuild?

Hamed

No, I try it now.

Hamed

Did it.
Still doesn't work!

? Offline

Can you give me a copy of that file so I can try it?

Hamed

sure, how can I do that?

? Offline

The file works for me. Please try this in your load_object() function:

    QFile file(":/plane/j3pipercub.obj");
    if (!file.open(QIODevice::ReadOnly|QIODevice::Text)) {
        qDebug() << "file read error";
        return;
    }
    const QByteArray ba = file.readAll();
    file.close();
    const QString s( ba );
    qDebug() << s;

? Offline

Ok, let's see if we can copy the file's content to another file:

    QFile file(":/plane/j3pipercub.obj");
    if (!file.open(QIODevice::ReadOnly|QIODevice::Text)) {
        qDebug() << "file read error";
        return;
    }
    const QByteArray ba = file.readAll();
    file.close();

    QFile file2("/home/pw/piper.obj"); // +++++ ADJUST PATH ++++++
    if (!file2.open(QIODevice::WriteOnly)) {
        qDebug() << "file write error";
        return;
    }
    qDebug() << file2.write(ba);
    file2.close();

mcosta

HI,

have you used Q_INIT_RESOURCE to initialize the resource??

Hamed

No! where should I initialize it?

mcosta

Hi,

in the main(); something like

int main (int argc, char *argv[])
{
    QApplication app(argc, argv);

    Q_INIT_RESOURCE(mresources);

    .....
}

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@mcosta said:

Q_INIT_RESOURCE

Since when is this needed? Works for me without this.

Hamed

dear @mcosta it's not helped

mcosta

@Wieland Q_INIT_RESOURCE is needed if the resource is not embedded in the application or on some platform

Normally, when resources are built as part of the application, the resources are loaded automatically at startup. The Q_INIT_RESOURCE() macro is necessary on some platforms for resources stored in a static library.

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@mcosta Things are a bit strange here. Reading from the resource works. In the code I posted above there is the bytearray ba and it has the correct size, but it contains only null bytes. But only on Hamed's computer! Works on mine. I don't get it.

mcosta

hi,

so you could try to use an alias

<RCC>
<qresource prefix="/plane">
<file alias="j3pipercub.obj">j3pipercub.obj</file>
</qresource>
</RCC>