Class Log

Wrapper for message logging functions.

Inheritance

object

Log

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetVips

Assembly: NetVips.dll

Syntax

public static class Log

Methods

PrintLogFunction(string, LogLevelFlags, string)

Common logging method.

Declaration

public static void PrintLogFunction(string domain, Enums.LogLevelFlags level, string message)

Parameters

Type	Name	Description
string	domain	The log domain of the message.
Enums.LogLevelFlags	level	The log level of the message (including the fatal and recursion flags).
string	message	The message to process.

Remarks

Sample usage:

// Print the messages for the NULL domain
var logFunc = new LogFunc(Log.PrintLogFunction);
Log.SetLogHandler(null, Enums.LogLevelFlags.All, logFunc);

PrintTraceLogFunction(string, LogLevelFlags, string)

Common logging method.

Declaration

public static void PrintTraceLogFunction(string domain, Enums.LogLevelFlags level, string message)

Parameters

Type	Name	Description
string	domain	The log domain of the message.
Enums.LogLevelFlags	level	The log level of the message (including the fatal and recursion flags).
string	message	The message to process.

Remarks

Sample usage:

// Print messages and stack trace for vips critical messages
var logFunc = new LogFunc(Log.PrintTraceLogFunction);
Log.SetLogHandler("VIPS", Enums.LogLevelFlags.Critical, logFunc);

RemoveLogHandler(string, uint)

Removes the log handler.

Declaration

public static void RemoveLogHandler(string logDomain, uint handlerId)

Parameters

Type	Name	Description
string	logDomain	The log domain.
uint	handlerId	The id of the handler, which was returned in SetLogHandler(string, LogLevelFlags, LogDelegate).

SetAlwaysFatal(LogLevelFlags)

Sets the message levels which are always fatal, in any log domain. When a message with any of these levels is logged the program terminates.

Declaration

public static Enums.LogLevelFlags SetAlwaysFatal(Enums.LogLevelFlags fatalMask)

Parameters

Type	Name	Description
Enums.LogLevelFlags	fatalMask	The mask containing bits set for each level of error which is to be fatal.

Returns

Type	Description
Enums.LogLevelFlags	The old fatal mask.

SetAlwaysFatal(string, LogLevelFlags)

Sets the log levels which are fatal in the given domain.

Declaration

public static Enums.LogLevelFlags SetAlwaysFatal(string logDomain, Enums.LogLevelFlags fatalMask)

Parameters

Type	Name	Description
string	logDomain	The log domain.
Enums.LogLevelFlags	fatalMask	The new fatal mask.

Returns

Type	Description
Enums.LogLevelFlags	The old fatal mask for the log domain.

SetLogHandler(string, LogLevelFlags, LogDelegate)

Sets the log handler for a domain and a set of log levels.

Declaration

public static uint SetLogHandler(string logDomain, Enums.LogLevelFlags flags, Log.LogDelegate logFunc)

Parameters

Type	Name	Description
string	logDomain	The log domain, or null for the default "" application domain.
Enums.LogLevelFlags	flags	The log levels to apply the log handler for.
Log.LogDelegate	logFunc	The log handler function.

Returns

Type	Description
uint	The id of the handler.