Features of the mql5 language, subtleties and tricks - page 197

[Alexey Viktorov]

fxsaber:

This is ALT+D on the chart.

Wow... And it doesn't show in the documentation index

[Vitaly Muzichenko]

Why and how to fix it, the path needs a slash

#define    path      "/metatrader"

[Vladislav Andruschenko]

Vitaly Muzichenko:

Why and how to fix it, the path needs a slash

//

[Vitaly Muzichenko]

Vladislav Andruschenko:

//

#define    path      "//metatrader"

[Vladimir Karputov]

Vitaly Muzichenko:

let me try to guess ...

///

[Vitaly Muzichenko]

Vladimir Karputov:

let me try to guess ...

///

Wow!)

Thank you!

[Valeriy Yastremskiy]

Vitaly Muzichenko:

Wow!)

Thank you!

What's a real 3 ///

[Vitaly Muzichenko]

Valeriy Yastremskiy:
Che really 3 ///

It did compile, but the output was 3 slashes, while the output needed only one slash. The problem was solved in another way.

[Vitaly Muzichenko]

Who can tell me how to get the hardware ID, preferably CPU or hard disk.

This code gets something, but it's not clear what

#property strict

struct SYSTEM_INFO {
   uint              dwOemId;
   uint              dwPageSize;
   long              lpMinimumApplicationAddress;
   long              lpMaximumApplicationAddress;
   ulong             dwActiveProcessorMask;
   uint              dwNumberOfProcessors;
   uint              dwProcessorType;
   uint              dwAllocationGranularity;
   ushort            wProcessorLevel;
   ushort            wProcessorRevision;
};
SYSTEM_INFO sys;
#import "kernel32.dll"
   void GetNativeSystemInfo(SYSTEM_INFO &system_info);
#import
//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
  GetNativeSystemInfo(sys);
  Print(sys.dwOemId);
  Print(sys.dwPageSize);
  Print(sys.dwActiveProcessorMask);
  Print(sys.dwNumberOfProcessors);
  Print(sys.dwProcessorType);
  Print(sys.dwAllocationGranularity);
  Print(sys.wProcessorLevel);
  Print(sys.wProcessorRevision);
//---
  }
//+------------------------------------------------------------------+

mt4

0       18:35:40.363    P EURCAD,M30: 9
0       18:35:40.363    P EURCAD,M30: 4096
0       18:35:40.363    P EURCAD,M30: 281474976719320
0       18:35:40.363    P EURCAD,M30: 705101830
0       18:35:40.363    P EURCAD,M30: 0
0       18:35:40.363    P EURCAD,M30: 0
0       18:35:40.363    P EURCAD,M30: 0
0       18:35:40.363    P EURCAD,M30: 0

mt5

FF      0       18:34:33.778    P (EURCAD,M30)  9
PR      0       18:34:33.778    P (EURCAD,M30)  4096
CO      0       18:34:33.778    P (EURCAD,M30)  15
EG      0       18:34:33.778    P (EURCAD,M30)  4
QQ      0       18:34:33.778    P (EURCAD,M30)  8664
FM      0       18:34:33.778    P (EURCAD,M30)  65536
EH      0       18:34:33.778    P (EURCAD,M30)  6
MS      0       18:34:33.778    P (EURCAD,M30)  10759

---

I couldn't find any info on the net, but I guess it's caused by another .dll

[Vladimir Simakov]

Vitaly Muzichenko:

Who can tell me how to get the hardware ID, preferably CPU or hard disk.

This code gets something, but it's not clear what

mt4

mt5

---

I couldn't find any info on the net, but I guess it's caused by another .dll

#ifdef __MQL5__
   #define  LPVOID long
#else
   #define  LPVOID int
#endif
#define  DWORD_PTR LPVOID

struct SYSTEM_INFO {
   uint              dwOemId;
   uint              dwPageSize;
   LPVOID            lpMinimumApplicationAddress;
   LPVOID            lpMaximumApplicationAddress;
   DWORD_PTR         dwActiveProcessorMask;
   uint              dwNumberOfProcessors;
   uint              dwProcessorType;
   uint              dwAllocationGranularity;
   ushort            wProcessorLevel;
   ushort            wProcessorRevision;
};

upd: on x86 architecture - cpuid prsessor instruction. The msvs has __cpuid(int[4],int) and __cpuidex(int[4],int,int). Examples are available online.