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Old 11-20-2005, 01:18 AM
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Thumbs up MT4 Files Functions Replacement.
Hi folks,

A lot of people asked me and metaquotes forum about file handling functions.
I think MT4 have a lot of bugs in those functions.
1- They don't work in backtesting
2- They don't write outside "MetaTrader 4\experts\files" path.

Today I opened my Visual C++ and wrote a file handling dll for MT4, I hope you enjoy it, and its source code, and tell me your .

Setup:
1- Extract the "mtguru1.dll" to "MetaTrader 4\experts\libraries" path.
2- Extract "FilesDemo.mq4" to "MetaTrader 4\experts\indicators" path and compile it.
3- Extract "gFiles.mqh" to "MetaTrader 4\experts\include".
4- Load FilesDemo from your Indicators - don't forget to enbable "Allow DLL Import"
5- Enjoy.
Attached Files
File Type: zip mtguru1.zip (94.8 KB, 1033 views)
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Last edited by codersguru : 11-25-2005 at 01:26 PM. Reason: gFiles.mqh
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Old 11-21-2005, 12:22 PM
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Hi folks,

Any feedback please ?
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Old 11-21-2005, 01:39 PM
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Well, I haven't tested it. But if it works..that is AWESOME!!
I checked out the demo .mq4 file, and it is so simple and elegant. Good work.

The only issue I have is what to do about new lines.
How do I use gFile to write a new line?
Last edited by fivewhy : 11-21-2005 at 01:58 PM.
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Old 11-21-2005, 02:09 PM
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Thumbs up Thank!
Quote:
Originally Posted by fivewhy
Well, I haven't tested it. But if it works..that is AWESOME!!
I checked out the demo .mq4 file, and it is so simple and elegant. Good work.

The only issue I have is what to do about new lines.
How do I use gFile to write a new line?
fivewhy,

Thank you very much for your comment.
I think the new line printing issue needs some work from me, Thanks for the notice.
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Old 11-21-2005, 08:48 PM
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well done , but file functions (as well as many other) may be used directly from windows API dlls.

example of file copy function import:

#import "Kernel32.dll"
bool CopyFileA (string source_file, string destination_file, bool if_exist);

with DLLs you can do a lot of things, like SQL database access and so on.
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Old 11-21-2005, 08:58 PM
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where can I find a list of all functions available in kernel32.dll (and other windows .dll's)?

Edit: Found it. See attched.
Attached Files
File Type: txt kernel32.txt (305.8 KB, 473 views)
Last edited by fivewhy : 11-21-2005 at 09:21 PM.
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Old 11-21-2005, 10:27 PM
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Question That's right, but?
Quote:
Originally Posted by Beluck
well done , but file functions (as well as many other) may be used directly from windows API dlls.

example of file copy function import:

#import "Kernel32.dll"
bool CopyFileA (string source_file, string destination_file, bool if_exist);

with DLLs you can do a lot of things, like SQL database access and so on.
Beluck,
That's right , but could you give me .mql demo shows me how to use the kernel32 functions CreateFile, OpenFile,WriteFile and ReadFile in MQL4

Code:
HANDLE CreateFile(
  LPCTSTR lpFileName,
  DWORD dwDesiredAccess,
  DWORD dwShareMode,
  LPSECURITY_ATTRIBUTES lpSecurityAttributes,
  DWORD dwCreationDisposition,
  DWORD dwFlagsAndAttributes,
  HANDLE hTemplateFile
);

HFILE OpenFile(
  LPCSTR lpFileName,
  LPOFSTRUCT lpReOpenBuff,
  UINT uStyle
);

BOOL WriteFile(
  HANDLE hFile,
  LPCVOID lpBuffer,
  DWORD nNumberOfBytesToWrite,
  LPDWORD lpNumberOfBytesWritten,
  LPOVERLAPPED lpOverlapped
);

BOOL ReadFile(
  HANDLE hFile,
  LPVOID lpBuffer,
  DWORD nNumberOfBytesToRead,
  LPDWORD lpNumberOfBytesRead,
  LPOVERLAPPED lpOverlapped
);
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Old 11-25-2005, 10:21 AM
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ted
alerts.mqh not part of mtguru1.zip, could not run FilesDemo? Thanking you in advance.
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Old 11-25-2005, 01:25 PM
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gFiles.mqh
Quote:
Originally Posted by sx ted
alerts.mqh not part of mtguru1.zip, could not run FilesDemo? Thanking you in advance.
sx ted,

I'm sorry, I meant "gFiles.mqh"

To run FilesDemo:

1- Extract the "mtguru1.dll" to "MetaTrader 4\experts\libraries" path.
2- Extract "FilesDemo.mq4" to "MetaTrader 4\experts\indicators" path and compile it.
3- Extract "gFiles.mqh" to "MetaTrader 4\experts\include".
4- Load FilesDemo from your Indicators - don't forget to enbable "Allow DLL Import"
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www.xpworx.com/custom.htm
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Old 11-25-2005, 03:07 PM
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ted
CodersGuru, thank u super, have u got equivalent of FileTell()
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