OpenCV Save CvRect to File 保存CvRect变量到文件

在OpenCv中，我们有时候需要查看CvRect变量的值，我们可以通过将其保存到文件来查看，保存的代码如下：

void writeCvRectToFile(CvRect &rect, const char *filename) {
    CvFileStorage *fs = cvOpenFileStorage(filename, , CV_STORAGE_WRITE);
    if (!fs) {
        fprintf(stderr, "Could not open file ..\n");
        return;
    }
    cvStartWriteStruct(fs, "rect", CV_NODE_SEQ | CV_NODE_FLOW);
    cvWriteInt(fs, , rect.x);
    cvWriteInt(fs, , rect.y);
    cvWriteInt(fs, , rect.width);
    cvWriteInt(fs, , rect.height);
    cvEndWriteStruct(fs);
    cvReleaseFileStorage(&fs);
}