Procedural event handler for OnExceptionNotify event.
Unit
EEvents
Syntax
Parameters
ACustom [in, optional]
Custom user data parameter. It's the same pointer as it was passed to RegisterEvent-function.
AExceptionInfo [in]
Information about exception.
AHandle [out]
True - (default) process exception with EurekaLog, False - process exception with standard exception handler
ACallNextHandler [out]
True (default) - call next registered event handler, False - do not call next event handler.
Tip
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Set ACallNextToHandler to False, if you set AHandle to False.
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Remarks
By default: OnExceptionNotify event is fired for any exception which wasn't handled by the code.
Note
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If "Catch handled exception" option is enabled - this event will also fire for any handled exception.
You can determinate the kind of exception (handled or unhandled) by analyzing properties of AExceptionInfo argument (see Handled property).
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You can use this event to disable processing of certain exceptions by EurekaLog.
Tip
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You can also use exception filters instead of this event.
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Use OnExceptionAction event to fine-control processing of exceptions.
Caution!
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Any event is called from the context of exception thread, which may be not the main thread of application. Thus, it's highly recommended to avoid using any global-like data and to avoid access VCL objects. If you still need to do any of that - please use proper thread synchronization for globals and Synchronize method for VCL access.
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Examples
Code (Delphi)
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try
raise Exception.Create('Error'); // - OnRaise event
finally
...
end;
// - OnExceptionNotify will be called
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Code (Delphi)
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try
raise Exception.Create('Error'); // - OnRaise event
except
...
end;
// - OnExceptionNotify will not be called, since exception was handled by the code
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See this article for example of registering event handlers.
Sample event handler may look like this:
Code (Delphi)
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procedure MyExceptionNotify(const ACustom: Pointer; AExceptionInfo: TEurekaExceptionInfo; var AHandle: Boolean; var ACallNextHandler: Boolean);
begin
// Disable exception processing by EurekaLog
Handle := False;
ACallNextHandler := False;
end;
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See also
Send feedback...
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Build date: 2024-09-30
Last edited: 2024-09-30
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Permanent link to this article: https://www.eurekalog.com/help/eurekalog/topic_type_eevents_televexceptionnotifyproc.php
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