提示错误，为什么？？

[James_ht]

typedef void *CMPHANDLE;

typedef struct tagCAVIA9600Sc CAVIA9600Sc;

struct tagCAVIA9600Sc {
errCode ( *ScCardDetect )(CMPHANDLE,bool cardPresent);
};

errCode AVIA9600ScCardDetect(CMPHANDLE,bool cardPresent)
{

printf("AVIA9600ScCardDetect\n");
return 0;

}

int main(int argc, char* argv[])
{
CAVIA9600Sc *p_SMC=NULL;

errCode (*ScCardDetect)(CMPHANDLE,bool cardPresent);

ScCardDetect = AVIA9600ScCardDetect;

p_SMC->ScCardDetect = AVIA9600ScCardDetect; //提示错误，为什么？？


return 1;
}

谢谢！！

[angelanpan]

p_SMC不是等于NULL么？
NULL-〉ScCardDetect当然会出错

[James_ht]

谢谢！！
CAVIA9600Sc *p_SMC;
这样是一样的错误。

[jixingzhong]

先给指针分配空间啊 ...

[jixingzhong]

CAVIA9600Sc *p_SMC = (CAVIA9600Sc *)malloc(sizeof(CAVIA9600Sc)) ;

[James_ht]

谢谢！！