您好，有人可以帮我弄清楚如何解决此错误消息吗？我试图将Qt3工作代码重写为Qt4，以将IplImage转换为QImage，并找到“正确的转换类型”，但是下面的代码导致“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;

最佳答案

下面的代码段可在我的Qt4应用程序上运行，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);

    }

https://stackoverflow.com/questions/6482252/