c++ 大家帮忙看看这个二维动态数组的声明和引用有什么问题吗

Question

Image::Image(unsigned char **m, int h, int w)
{
m=new unsigned char *[h];
for (int x=0;x<h;x++)
{
m[x]=new unsigned char[w];
}
}

void Image::Read(char* ImageName)
{
IplImage* img = cvLoadImage(ImageName, CV_LOAD_IMAGE_GRAYSCALE);
unsigned char *img_data = (unsigned char *)(img->imageData);
int height=img->height;

int width=img->width;

int width_step=img->widthStep;
unsigned char **date;
Image(date,height,width);
int x,y,z=0;

for(x=0;x<height;x++)
{
for(y=0;y<width;y++)
{
date[x][y]=img_data[z];

z++;
}
}

//将一维指针img_data指向的内存中的值写入成员变量二维指针data所指的内存中

//write your code here*/

cvReleaseImage(&img);
}

Answer 1

Image::Image(unsigned char **m, int h, int w)
Image 怎么继承自己啊