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Function Fmt

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Specifies a custom handler of EurekaLog internal errors.

 

Unit

EBase

 

Syntax

 

Code (Delphi)

function Fmt(

const Format: String;

const Args: array of const

): String; overload;

 

Value

Contains internal error handler/dispatcher. Can be nil. By default it's assigned to minimal code, which shows simple message box (via custom MessageBox procedure) with basic internal error info.

 

Remarks

Do not call it. Call InternalErrorSet procedure instead.

 

You can assign this variable to your own custom handler to be able react to internal error messages.

 

Please note that you're responsible for terminating application in the end of your handler. If you fail to do so - application will be terminated anyway, by InternalErrorSet wrapper.

 

Warning

If you change this variable to your own handler at any stage - do not forget to restore previous handler at opposite stage.

 

I.e. you need to save and restore handler.

 

See examples.

 

Examples

Example of trivial internal error handler:

Code (Delphi)

procedure CustomInternalHandler(const AStage, AMsg: String; const ALastError: Cardinal);

begin

MessageBox(AMsg, AStage, MB_OK or MB_ICONSTOP);

InternalErrorRestart(Cardinal(E_FAIL));

end;

var

SavedHandler: TInternalErrorProc;

initialization

SavedHandler := _InternalError;

_InternalError := CustomInternalHandler;

finalization

_InternalError := SavedHandler;

 

 

See also

•InternalErrorSet
•TInternalErrorProc
•InternalErrorRestart


Send feedback... Build date: 2026-03-07
Last edited: 2026-03-07
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