MT4 DLL 调用问题

2011-12-08 · 6177 阅读

Dear all:

         初次发贴，多多关照！各位高手帮我解答个问题我利用Mt4 例子程序生成DLL  想实现文件的copy
  创建了下面一个函数 mt4 在调用的时候平台死掉是啥原因呢
  //=======================================================
  MT4_EXPFUNC bool __stdcall Mt4CopyFile(char *s,char *d)
  {
   FILE *fp1,*fp2;
   if((fp1=fopen(s,\"r\"))==NULL)
   {
            printf(\"Cannot open Source file!n\");
               exit(0);
   }
   if((fp2=fopen(d,\"w\"))==NULL)
   {
         printf(\"Cannot open Destination file!n\");
         exit(0);

   }
   while(!feof(fp1))
         fputc(fgetc(fp1),fp2);
   fclose(fp1);
   fclose(fp2);
   return 0;
  }
  //=============================
  下面是源码


  //+------------------------------------------------------------------+
  //|                                           Sample DLL for MQL4 |
  //|                Copyright ?2004-2006, MetaQuotes Software Corp. |
  //|                                     http://www.metaquotes.net |
  //+------------------------------------------------------------------+
  #define WIN32_LEAN_AND_MEAN  // Exclude rarely-used stuff from Windows headers
  #include
  #include
  #include
  //----
  #define MT4_EXPFUNC __declspec(dllexport)
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  #pragma pack(push,1)
  struct RateInfo
{
   unsigned int    ctm;
   double          open;
   double          low;
   double          high;
   double          close;
   double          vol;
};
  #pragma pack(pop)
  //----
  struct MqlStr
{
   int             len;
   char          *string;
};
  static int CompareMqlStr(const void *left,const void *right);
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
{
  //----
   switch(ul_reason_for_call)
   {
      case DLL_PROCESS_ATTACH:
      case DLL_THREAD_ATTACH:
      case DLL_THREAD_DETACH:
      case DLL_PROCESS_DETACH:
         break;
   }
  //----
   return(TRUE);
}
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  MT4_EXPFUNC int __stdcall GetIntValue(const int ipar)
{
   printf(\"GetIntValue takes %dn\",ipar);
   return(ipar);
}
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  MT4_EXPFUNC double __stdcall GetDoubleValue(const double dpar)
{
   printf(\"GetDoubleValue takes %.8lfn\",dpar);
   return(dpar);
}
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  MT4_EXPFUNC char* __stdcall GetStringValue(char *spar)
{
   printf(\"GetDoubleValue takes \"%s\"n\",spar);
   return(spar);
}
  //+------------------------------------------------------------------+
  //|                                                                |
  //+------------------------------------------------------------------+
  MT4_EXPFUNC double __stdcall GetArrayItemValue(const double *arr,const int arraysize,const int nitem)
{
  //----
   if(arr==NULL)
   {
      printf(\"GetArrayItemValue: NULL arrayn\");
      return(0.0);
   }
   if(arraysize

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