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Creates new log file.
Unit
ELogging
Syntax
Code (Delphi)
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procedure ELogOpen(
const AFileName: String = '';
const ABufferSize: Cardinal = 1024*1024
);
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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
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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.
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Note
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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.
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Examples
Code (Delphi)
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ExeName := ParamStr(0);
LogFileName := ChangeFileExt(ExtractFileName(ExeName), '.csl');
LogFolder := ExpandEnvVars('%APPDATA%'); // ESysInfo unit
FullLogFileName := IncludeTrailingPathDelimiter(LogFolder) + LogFileName;
ELogOpen(FullLogFileName);
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See also
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Send feedback...
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Build date: 2025-05-08
Last edited: 2025-05-08
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