Rapports d'événements
Pour signaler des événements, vous devez d’abord définir les événements dans un fichier texte de message. Pour plus d’informations sur l’écriture d’un fichier texte de message, consultez Fichiers texte de message. Voici le fichier texte de message utilisé dans cet exemple.
; // MyEventProvider.mc
; // This is the header section.
SeverityNames=(Success=0x0:STATUS_SEVERITY_SUCCESS
Informational=0x1:STATUS_SEVERITY_INFORMATIONAL
Warning=0x2:STATUS_SEVERITY_WARNING
Error=0x3:STATUS_SEVERITY_ERROR
)
FacilityNames=(System=0x0:FACILITY_SYSTEM
Runtime=0x2:FACILITY_RUNTIME
Stubs=0x3:FACILITY_STUBS
Io=0x4:FACILITY_IO_ERROR_CODE
)
LanguageNames=(English=0x409:MSG00409)
; // The following are the categories of events.
MessageIdTypedef=WORD
MessageId=0x1
SymbolicName=NETWORK_CATEGORY
Language=English
Network Events
.
MessageId=0x2
SymbolicName=DATABASE_CATEGORY
Language=English
Database Events
.
MessageId=0x3
SymbolicName=UI_CATEGORY
Language=English
UI Events
.
; // The following are the message definitions.
MessageIdTypedef=DWORD
MessageId=0x100
Severity=Error
Facility=Runtime
SymbolicName=MSG_INVALID_COMMAND
Language=English
The command is not valid.
.
MessageId=0x101
Severity=Error
Facility=System
SymbolicName=MSG_BAD_FILE_CONTENTS
Language=English
File %1 contains content that is not valid.
.
MessageId=0x102
Severity=Warning
Facility=System
SymbolicName=MSG_RETRIES
Language=English
There have been %1 retries with %2 success! Disconnect from
the server and try again later.
.
MessageId=0x103
Severity=Informational
Facility=System
SymbolicName=MSG_COMPUTE_CONVERSION
Language=English
%1 %%4096 = %2 %%4097.
.
; // The following are the parameter strings */
MessageId=0x1000
Severity=Success
Facility=System
SymbolicName=QUARTS_UNITS
Language=English
quarts%0
.
MessageId=0x1001
Severity=Success
Facility=System
SymbolicName=GALLONS_UNITS
Language=English
gallons%0
.
Pour compiler le fichier texte du message, utilisez la commande suivante :
mc -U provider.mc
Pour compiler les ressources générées par le compilateur de messages, utilisez la commande suivante :
rc provider.rc
Pour créer la DLL de ressource uniquement qui contient les ressources de chaîne de table de messages, utilisez la commande suivante (vous pouvez exécuter la commande à partir d’une invite de commandes Visual Studio) :
link -dll -noentry provider.res
L’exemple suivant montre le fichier d’en-tête que le compilateur a généré pour le fichier texte de message ci-dessus. Incluez le fichier d’en-tête dans votre projet.
// MyEventProvider.mc
// This is the header section.
// The following are categories of events.
//
// Values are 32 bit values laid out as follows:
//
// 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
// +---+-+-+-----------------------+-------------------------------+
// |Sev|C|R| Facility | Code |
// +---+-+-+-----------------------+-------------------------------+
//
// where
//
// Sev - is the severity code
//
// 00 - Success
// 01 - Informational
// 10 - Warning
// 11 - Error
//
// C - is the Customer code flag
//
// R - is a reserved bit
//
// Facility - is the facility code
//
// Code - is the facility's status code
//
//
// Define the facility codes
//
#define FACILITY_SYSTEM 0x0
#define FACILITY_STUBS 0x3
#define FACILITY_RUNTIME 0x2
#define FACILITY_IO_ERROR_CODE 0x4
//
// Define the severity codes
//
#define STATUS_SEVERITY_WARNING 0x2
#define STATUS_SEVERITY_SUCCESS 0x0
#define STATUS_SEVERITY_INFORMATIONAL 0x1
#define STATUS_SEVERITY_ERROR 0x3
//
// MessageId: NETWORK_CATEGORY
//
// MessageText:
//
// Network Events
//
#define NETWORK_CATEGORY ((WORD)0x00000001L)
//
// MessageId: DATABASE_CATEGORY
//
// MessageText:
//
// Database Events
//
#define DATABASE_CATEGORY ((WORD)0x00000002L)
//
// MessageId: UI_CATEGORY
//
// MessageText:
//
// UI Events
//
#define UI_CATEGORY ((WORD)0x00000003L)
// The following are message definitions.
//
// MessageId: MSG_INVALID_COMMAND
//
// MessageText:
//
// The command is not valid.
//
#define MSG_INVALID_COMMAND ((DWORD)0xC0020100L)
//
// MessageId: MSG_BAD_FILE_CONTENTS
//
// MessageText:
//
// File %1 contains content that is not valid.
//
#define MSG_BAD_FILE_CONTENTS ((DWORD)0xC0000101L)
//
// MessageId: MSG_RETRIES
//
// MessageText:
//
// There have been %1 retries with %2 success! Disconnect from
// the server and try again later.
//
#define MSG_RETRIES ((DWORD)0x80000102L)
//
// MessageId: MSG_COMPUTE_CONVERSION
//
// MessageText:
//
// %1 %%4096 = %2 %%4097.
//
#define MSG_COMPUTE_CONVERSION ((DWORD)0x40000103L)
// The following are the parameter strings */
//
// MessageId: QUARTS_UNITS
//
// MessageText:
//
// quarts%0
//
#define QUARTS_UNITS ((DWORD)0x00001000L)
//
// MessageId: GALLONS_UNITS
//
// MessageText:
//
// gallons%0
//
#define GALLONS_UNITS ((DWORD)0x00001001L)
L’exemple suivant montre comment utiliser la fonction ReportEvent pour écrire les événements définis dans le fichier texte de message ci-dessus.
#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <stdio.h>
#include "provider.h"
#pragma comment(lib, "advapi32.lib")
#define PROVIDER_NAME L"MyEventProvider"
// Hardcoded insert string for the event messages.
CONST LPCWSTR pBadCommand = L"The command that was not valid";
CONST LPCWSTR pFilename = L"c:\\folder\\file.ext";
CONST LPCWSTR pNumberOfRetries = L"3";
CONST LPCWSTR pSuccessfulRetries = L"0";
CONST LPCWSTR pQuarts = L"8";
CONST LPCWSTR pGallons = L"2";
void wmain(void)
{
HANDLE hEventLog = NULL;
LPCWSTR pInsertStrings[2] = { NULL, NULL };
DWORD dwEventDataSize = 0;
// The source name (provider) must exist as a subkey of Application.
hEventLog = RegisterEventSource(NULL, PROVIDER_NAME);
if (NULL == hEventLog)
{
wprintf(L"RegisterEventSource failed with 0x%x.\n", GetLastError());
goto cleanup;
}
// This event includes user-defined data as part of the event. The event message
// does not use insert strings.
dwEventDataSize = ((DWORD)wcslen(pBadCommand) + 1) * sizeof(WCHAR);
if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, UI_CATEGORY, MSG_INVALID_COMMAND, NULL, 0, dwEventDataSize, NULL, const_cast<LPWSTR>(pBadCommand)))
{
wprintf(L"ReportEvent failed with 0x%x for event 0x%x.\n", GetLastError(), MSG_INVALID_COMMAND);
goto cleanup;
}
// This event uses insert strings.
pInsertStrings[0] = pFilename;
if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, DATABASE_CATEGORY, MSG_BAD_FILE_CONTENTS, NULL, 1, 0, (LPCWSTR*)pInsertStrings, NULL))
{
wprintf(L"ReportEvent failed with 0x%x for event 0x%x.\n", GetLastError(), MSG_BAD_FILE_CONTENTS);
goto cleanup;
}
// This event uses insert strings.
pInsertStrings[0] = pNumberOfRetries;
pInsertStrings[1] = pSuccessfulRetries;
if (!ReportEvent(hEventLog, EVENTLOG_WARNING_TYPE, NETWORK_CATEGORY, MSG_RETRIES, NULL, 2, 0, (LPCWSTR*)pInsertStrings, NULL))
{
wprintf(L"ReportEvent failed with 0x%x for event 0x%x.\n", GetLastError(), MSG_RETRIES);
goto cleanup;
}
// This event uses insert strings.
pInsertStrings[0] = pQuarts;
pInsertStrings[1] = pGallons;
if (!ReportEvent(hEventLog, EVENTLOG_INFORMATION_TYPE, UI_CATEGORY, MSG_COMPUTE_CONVERSION, NULL, 2, 0, (LPCWSTR*)pInsertStrings, NULL))
{
wprintf(L"ReportEvent failed with 0x%x for event 0x%x.\n", GetLastError(), MSG_COMPUTE_CONVERSION);
goto cleanup;
}
wprintf(L"All events successfully reported.\n");
cleanup:
if (hEventLog)
DeregisterEventSource(hEventLog);
}
Avant d’exécuter cet exemple, inscrivez le fournisseur dans le Registre. Pour plus d’informations sur les paramètres du Registre, consultez Sources d’événements. Ajoutez « MyEventProvider » en tant que clé de Registre sous la clé suivante :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\Application
Voici les valeurs de Registre à définir pour la clé de Registre « MyEventProvider ».
Nom de la valeur | Type | Données de valeur |
---|---|---|
CategoryCount | REG_DWORD | 0x00000003 |
CategoryMessageFile | REG_SZ | chemin d’accès\provider.dll |
EventMessageFile | REG_SZ | chemin d’accès\provider.dll |
ParameterMessageFile | REG_SZ | chemin d’accès\provider.dll |
TypesSupported | REG_DWORD | 0x00000007 |