Root > Reference > All Functions > ELogOpen

Procedure ELogOpen

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Creates new log file.

 

Unit

ELogging

 

Syntax

 

Code (Delphi)

procedure ELogOpen(

const AFileName: String = '';

const ABufferSize: Cardinal = 1024*1024

);

 

Parameters

AFileName [in, opt]

An absolute full file name for the new log file. We recommend to use .csl file extension.

 

ABufferSize [in, opt]

Size of the buffer in bytes. Default is 1 Mb. Set to 0 to disable buffering.

 

Remarks

This function creates new log file. Add subsequent calls to ELog-like functions will write to AFileName.

 

A call to this function should be the first call in your application (e.g. before you call any of other logging routines).

 

If non-zero ABufferSize is specified: logging will write into a buffer. Buffer will be flushed to disk from time to time, or you can flush the buffer to disk at any time by calling the ELogFlush function.

 

If ABufferSize is 0: buffering will be disabled, logging will write directly to the file on disk. Application's performance may be sighnificantly reduced.

 

Note

If you call any of ELog function before calling this function - log entries will be added to internal log. Internal log will be copied to real log file once you call ELogOpen.

 

If you do not want old entries created earlier - call ELogClear before calling ELogOpen.

 

Note

A call to this function may be ignored, if application is already streaming into log file, which is owned by other module (exe/DLL) in application.

 

Examples

 

Code (Delphi)

ExeName := ParamStr(0);

LogFileName := ChangeFileExt(ExtractFileName(ExeName), '.csl');

LogFolder := ExpandEnvVars('%APPDATA%'); // ESysInfo unit

FullLogFileName := IncludeTrailingPathDelimiter(LogFolder) + LogFileName;

 

ELogOpen(FullLogFileName);

 

See also




Send feedback... Build date: 2024-12-19
Last edited: 2024-12-19
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