经过几天学习终于写出来一个，经过测试，正确。
#include "apdefap.h"
void OnPropertyChanged(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName, double value)
{
#pragma option(mbcs)
#pragma code()
#pragma code("kernel32.dll")
void GetLocalTime(LPSYSTEMTIME lpSystemTime);
int a;
a=GetTagWord("NewTag"); //Return-Type: WORD
if(a==0)
{
SYSTEMTIME sysTime;
FILE* pfile=NULL;
char s[30]="1#轧机的轧制量为：";
GetLocalTime(&sysTime);
pfile=fopen("e:\\1.txt","a+");
fprintf(pfile, "%4d年%d月%d日%d:%02d %s%3d\r\n", sysTime.wYear, sysTime.wMonth, sysTime.wDay, sysTime.wHour, sysTime.wMinute,s,GetTagWord("NewTag_1"));
fclose(pfile);
}
else
SetTagWord("NewTag_1",GetTagWord("NewTag"));

// WINCC:TAGNAME_SECTION_START
// syntax: #define TagNameInAction "DMTagName"
// next TagID : 1
// WINCC:TAGNAME_SECTION_END

// WINCC:PICNAME_SECTION_START
// syntax: #define PicNameInAction "PictureName"
// next PicID : 1
// WINCC:PICNAME_SECTION_END
}