"QImage with no type"编译错误消息

Question

你好，有人能帮我解决这个错误消息吗？我正试图将一个Qt3工作代码重写为Qt4，用于将IplImage转换为QImage，并找到了"正确的转换类型"，但我的代码如下所示，导致"ISO C++禁止声明没有类型的‘QImage’"

....
QImage *qqImage;
if (this->data->nChannels == 1)
{
    QVector<QRgb> myColorTable;
    for (int i = 0; i < 256; i++)
        myColorTable.push_back(qRgb(i, i, i)); //colorTable[i]);

    qqImage = new QImage(qImageBuffer, width, height, QImage::Format_Indexed8);
}
else
{
    qqImage = new QImage(qImageBuffer, width, height, QImage::Format_RGB32);
}
return qqImage;

Answer 1

下面的代码段适用于我的Qt4应用程序，请尝试一下。

    // img1 and img2 are Mat objects, img1 is grayscale,
    // img2 is three channel RGB image
    QImage qimg1,qimg2;
    if (this->data->nChannels == 1){
    qimg1=QImage(img1.data,img1.cols,img1.rows,QImage::Format_Indexed8);
    }
    else {
    qimg2=QImage(img2.data,img2.cols,img2.rows,QImage::Format_RGB888);
    }