Discussion :

[Pierre8r]

Bonjour,

Ma configuration :
OS Windows 2000 Pro
Visual C++ 2005 Express
Windows® Server 2003 SP1 Platform SDK

But :
J'essai de remplacer l'utilisation de MFC par l'API Win32 dans une DLL.

Soit un extrait de code de la DLL :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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	char filename[ 256 ];
	FILE *fh;
	int  iLines = 0;

Erreur à la compile :

k:\adkwin32\asciiwin32\plugin.cpp(90) : error C2065: 'FILE' : identificateur non déclaré

FILE ça vient d'ou ?

Comment corriger cette erreur ?

J'ai fais une recherche dans l'aide avec le mot FILE, je n'ai rien trouvé.

Le projet complet

Merci,

[Médinoc]

#include <stdio.h> ?

(ou bien #include <cstdio> si tu compiles en C++).

[Pierre8r]

Merci.

[Pierre8r]

#include <stdio.h> ?

(ou bien #include <cstdio> si tu compiles en C++).

Pour être du C++ l'extension .cpp au fichier ne suffit pas ?

Ce fichier c'est du C ou du C++ ?

////////////////////////////////////////////////////
// Plugin.cpp
// Standard implementation file for all AmiBroker plug-ins
//
// Copyright (C)2001-2002 Tomasz Janeczko, amibroker.com
// All rights reserved.
//
// Last modified: 2002-03-11 TJ
//
// You may use this code in your own projects provided that:
//
// 1. You are registered user of AmiBroker
// 2. The software you write using it is for personal, noncommercial use only
//
// For commercial use you have to obtain a separate license from Amibroker.com
//
////////////////////////////////////////////////////

#include "stdafx.h"
#include "ASCIIWin32.h"
#include "Plugin.h"
#include "stdlib.h"
#include "stdio.h"


// These are the only two lines you need to change
#define PLUGIN_NAME "ASCII sample data Plug-in"
#define VENDOR_NAME "Amibroker.com"
#define PLUGIN_VERSION 10000
#define PLUGIN_ID PIDCODE( 'A', 'S', 'C', 'I' )

#define THIS_PLUGIN_TYPE PLUGIN_TYPE_DATA

////////////////////////////////////////
// Data section
////////////////////////////////////////
static struct PluginInfo oPluginInfo =
{
sizeof( struct PluginInfo ),
THIS_PLUGIN_TYPE,
PLUGIN_VERSION,
PLUGIN_ID,
PLUGIN_NAME,
VENDOR_NAME,
0,
387000
};


///////////////////////////////////////////////////////////
// Basic plug-in interface functions exported by DLL
///////////////////////////////////////////////////////////

PLUGINAPI int GetPluginInfo( struct PluginInfo *pInfo )
{
*pInfo = oPluginInfo;

return TRUE;
}


PLUGINAPI int Init(void)
{
return 1;
}

PLUGINAPI int Release(void)
{
return 1; // default implementation does nothing
}



PLUGINAPI int Notify(struct PluginNotification *pn)
{
// default implementation does nothing

return 1;
}

PLUGINAPI int GetQuotes( LPCTSTR pszTicker, int nPeriodicity, int nLastValid, int nSize, struct Quotation *pQuotes )
{
// needed because we will use MFC inside this function
//AFX_MANAGE_STATE( AfxGetStaticModuleState() );

// we assume that intraday data files are stored in ASCII subfolder
// of AmiBroker directory and they have name of <SYMBOL>.AQI
// and the format of Date(YYMMDD),Time(HHMM),Open,High,Low,Close,Volume
// and quotes are sorted in ascending order - oldest quote is on the top

char filename[ 256 ];
FILE *fh;
int iLines = 0;

// format path to the file (we are using relative path)
sprintf_s( filename, "ASCII\\%s.AQI", pszTicker );

// open file for reading
fh = fopen( filename, "r" );

// if file is successfully opened read it and fill quotation array
if( fh )
{
char line[ 256 ];

// read the line of text until the end of text
// but not more than array size provided by AmiBroker
while( fgets( line, sizeof( line ), fh ) && iLines < nSize )
{
// get array entry
struct Quotation *qt = &pQuotes[ iLines ];

// parse line contents: divide tokens separated by comma (strtok) and interpret values

// date and time first
int datenum = atoi( strtok( line, "," ) ); // YYMMDD
int timenum = atoi( strtok( NULL, "," ) ); // HHMM

qt->DateTime.PackDate.Tick = 0;
qt->DateTime.PackDate.Minute = timenum % 100;
qt->DateTime.PackDate.Hour = timenum / 100;
qt->DateTime.PackDate.Year = 100 + datenum / 10000;
qt->DateTime.PackDate.Month = ( datenum / 100 ) % 100;
qt->DateTime.PackDate.Day = datenum % 100;

// now OHLC price fields
qt->Open = (float) atof( strtok( NULL, "," ) );
qt->High = (float) atof( strtok( NULL, "," ) );
qt->Low = (float) atof( strtok( NULL, "," ) );
qt->Price = (float) atof( strtok( NULL, "," ) ); // close price

// ... and Volume
qt->Volume = atoi( strtok( NULL, ",\n" ) );

iLines++;
}

// close the file once we are done
fclose( fh );

}

// return number of lines read which is equal to
// number of quotes
return iLines;
}


PLUGINAPI int Configure( LPCTSTR pszPath, struct InfoSite *pSite )
{
// AFX_MANAGE_STATE is needed because dialog boxes call MFC and use resources
// similar line should be added to any other function exported by the plugin
// if only the function calls MFC or uses DLL resources
//AFX_MANAGE_STATE( AfxGetStaticModuleState() );

/*
** Here a config dialog may be called

CConfigDlg oDlg;

oDlg.DoModal();

**
*/

//AfxMessageBox("Configure button clicked");

return 1;
}

PLUGINAPI AmiVar GetExtraData( LPCTSTR pszTicker, LPCTSTR pszName, int nArraySize, int nPeriodicity, void* (*pfAlloc)(unsigned int nSize) )
{
// default implementation does nothing

AmiVar var;

var.type = VAR_NONE;
var.val = 0;

return var;
}

PLUGINAPI int SetTimeBase( int nTimeBase )
{
// only intraday intervals are supported
return ( nTimeBase < ( 24 * 60 * 60 ) ) ? 1 : 0;
}

[Médinoc]

Si, ça suffit.

Et ton code est de toute évidence du C++ utilisant la bibliothèque Microsoft Foundation Classes (MFC).

Et du mauvais C++, car tu y utilises des fonctions C qui n'ont pas lieu de l'eêtre en C++ :

• Typiquement, en C++ standard, on n'utilise pas fopen() mais un objet de type std::ofstream.
• Et typiquement, sous MFC, on n'utilise ni fopen() ni std::ofstream, mais un objet de type CFile ou CStdioFile, selon l'emploi qu'on veut en faire (CStdioFile est plus approprié pour les fichiers texte).