[SOLVED] QImage problem - adding/reading path of image with key/text [SOLVED]

[MarkoSan]

Hello, I've written following code:

bool CMerchandizeBrowser::embeddedPicPath(QImage image, QString strFilename)
{
    QImageWriter picImageWriter;    // image key writer
 
    picImageWriter.setFormat(strSupportedFormat);    // sets supported format
    if (picImageWriter.supportsOption(QImageIOHandler::Description))
    {
        qDebug() << strSupportedFormat << " supports embedded text.";
        if (image.text(strKeyImagePathName).isEmpty())
        {
            // pic path has not yet been saved
            image.setText(strKeyImagePathName, strFilename);    // sets embedded text
            return image.save(strFilename, strSupportedFormat);    // saves pic with embedded text
        } else {
            return false;    // path already embedded, abort operation
        }
    } else {
        qDebug() << strSupportedFormat << " does not support embedded text.";
        return false;    // operation failure
    }
    return false;    // operation failure
}

bool CMerchandizeBrowser::embeddedPicPath(QImage image, QString strFilename)
{
    QImageWriter picImageWriter;    // image key writer

    picImageWriter.setFormat(strSupportedFormat);    // sets supported format
    if (picImageWriter.supportsOption(QImageIOHandler::Description))
    {
        qDebug() << strSupportedFormat << " supports embedded text.";
        if (image.text(strKeyImagePathName).isEmpty())
        {
            // pic path has not yet been saved
            image.setText(strKeyImagePathName, strFilename);    // sets embedded text
            return image.save(strFilename, strSupportedFormat);    // saves pic with embedded text
        } else {
            return false;    // path already embedded, abort operation
        }
    } else {
        qDebug() << strSupportedFormat << " does not support embedded text.";
        return false;    // operation failure
    }
    return false;    // operation failure
}

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which is responsible to embedd a QImage path into image, but

return image.save(strFilename, strSupportedFormat);

return image.save(strFilename, strSupportedFormat);

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returns false. Does anyone has idea why?

Now I thought the chenged picture cannot be written into same filename and I've changed code to:

bool CMerchandizeBrowser::embeddedPicPath(QImage image, QString strFilename)
{
    QImageWriter picImageWriter;    // image key writer
 
    picImageWriter.setFormat(strSupportedFormat);    // sets supported format
    if (picImageWriter.supportsOption(QImageIOHandler::Description))
    {
        qDebug() << strSupportedFormat << " supports embedded text.";
        if (image.text(strKeyImagePathName).isEmpty())
        {
            // pic path has not yet been saved
            image.setText(strKeyImagePathName, strFilename);    // sets embedded text
            strFilename.insert(strFilename.indexOf(strNameExtDelimiter), strFilenameEmbeddedExtendtor);
            qDebug() << "strFilename: " << strFilename;    // debug
            return image.save(strFilename, strSupportedFormat);    // saves pic with embedded text
        } else {
            return false;    // path already embedded, abort operation
        }
    } else {
        qDebug() << strSupportedFormat << " does not support embedded text.";
        return false;    // operation failure
    }
    //return true;    // operation sucess
}

bool CMerchandizeBrowser::embeddedPicPath(QImage image, QString strFilename)
{
    QImageWriter picImageWriter;    // image key writer

    picImageWriter.setFormat(strSupportedFormat);    // sets supported format
    if (picImageWriter.supportsOption(QImageIOHandler::Description))
    {
        qDebug() << strSupportedFormat << " supports embedded text.";
        if (image.text(strKeyImagePathName).isEmpty())
        {
            // pic path has not yet been saved
            image.setText(strKeyImagePathName, strFilename);    // sets embedded text
            strFilename.insert(strFilename.indexOf(strNameExtDelimiter), strFilenameEmbeddedExtendtor);
            qDebug() << "strFilename: " << strFilename;    // debug
            return image.save(strFilename, strSupportedFormat);    // saves pic with embedded text
        } else {
            return false;    // path already embedded, abort operation
        }
    } else {
        qDebug() << strSupportedFormat << " does not support embedded text.";
        return false;    // operation failure
    }
    //return true;    // operation sucess
}

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It works now, thank you all anyway!