用memset进行指针变量的初始化

[wangzhihongji]

int _tmain(int argc, _TCHAR* argv[])
{
	//initiation
	_TCHAR* filename=_T("regenerate_original_picture.txt");
	unsigned char data[256];
	int packetlen=256;
	static unsigned short *ImageData[256][256][128];
	//What following below is define of the actual argument in the function of "Creat"
	HBITMAP hBitmap;
	BITMAPINFOHEADER *bmih=NULL ;
	unsigned short * pBits =(unsigned short*)memset( pBits, 0x24, 256*256*2 );//pBits是内容// 一旦create了,就可以直接操控PB IT s这个指针,
	//*( PB IT s + xxxx ) = 255;  // 对某个像素赋值. 

	
	//填装数据
	FILE *pfile=_tfopen(filename,_T("rb"));//rb要用_T转换一下
	for (int i = 0; i < 256; i++)
		for (int j = 0; j < 256; j++)
	{
       fread(data, 1, packetlen, pfile);
	   //dosomething //pBits，data，memcpy;
	   memcpy(ImageData[i][j],data,256);
	}
		int x=1;//x是标示波段的
		for (int v = 0; v < 256; v++)
			for (int c = 0; c < 256; c++)
			{
				memcpy( pBits,ImageData[v][c][x],1);
			}

		
	//CreateDIBitmap创建的是设备相关位图句柄 - HBITMAP. 
	//CreateDIBSection创建的是设备无关位图句柄 - HBITMAP.

	
	
	
    //初始化BITMAPINFOHEADER结构的栏位
	bmih->biSize = sizeof (BITMAPINFOHEADER) ;
	bmih->biWidth = 256 ;
	bmih->biHeight = 256 ;
	bmih->biPlanes = 1 ;
	bmih->biBitCount = 16 ;
	bmih->biCompression = BI_RGB ;
	bmih->biSizeImage = 0 ;
	bmih->biXPelsPerMeter = 0 ;
	bmih->biYPelsPerMeter = 0 ;
	bmih->biClrUsed = 0 ;
	bmih->biClrImportant = 0 ;
    //在基本准备後，我们呼叫该函式：
	hBitmap = CreateDIBSection (NULL, (BITMAPINFO *) &bmih, 0, (void**)&pBits, NULL, 0) ;
	
	SaveBmp(hBitmap,"bitmap");
	return 0;
}

--------------------------------
报错 使用了未初始化pBits变量。。。。可是我初始化过了啊。。。
楼主新手，欢迎指教。

[iyomumx]

先malloc，再memset

[苏叔叔]

unsigned short * pBits =(unsigned short*)memset( pBits, 0x24, 256*256*2 );//pBits是内容// 一旦create了,就可以直接操控PB IT s这个指针,
    //*( PB IT s + xxxx ) = 255;  // 对某个像素赋值. 

pBits都没有分配内存空间，初始化有何用？至于要分配都少空间，你应该清楚