请教关于结构体数组的引用出错

---

定义结构体数组
var.c:
struct StructDisData
{
unsigned int AddrDisData;
unsigned int TypeDisChar;
unsigned int TypeDisUnit;
unsigned char LengthDisData;
};

const struct StructDisData StrDisData[254]={.....};

var.h:
const extern struct StructDisData StrDisData[254];

在Lunxian.c中引用：
#include "var.h"

unsigned int vAdd;
void Sub1(void)
{
unsigned int disptr;
disptr =...;
vAdd =StrDisData[disptr].AddrDisData; //编译时在此处出错 Error[Pe852]: expression must be a pointer to a complete object type

}

解决方法：

将结构定义
struct StructDisData
{
unsigned int AddrDisData;
unsigned int TypeDisChar;
unsigned int TypeDisUnit;
unsigned char LengthDisData;
};
放到头文件中，即.h文件中