Root > Reference > Events > TELEvExceptionNotifyMeth

Type TELEvExceptionNotifyMeth

Previous pageReturn to chapter overviewNext page   

Method event handler for OnExceptionNotify event.

 

Unit

EEvents

 

Syntax

 

TELEvExceptionNotifyMeth = procedure(

AExceptionInfo: TEurekaExceptionInfo;

var AHandle: Boolean;

var ACallNextHandler: Boolean

) of object;

 

Parameters

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

Set ACallNextToHandler to False, if you set AHandle to False.

 

 

Remarks

OnExceptionNotify event is fired for any exception which wasn't handled by the code.

 

Note

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).

 

 

Tip

You can also use exception filters instead of this event.

 

Use OnExceptionAction event to fine-control processing of exceptions.

 

Caution!

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.

 

Examples

 

Code (Delphi)

try

raise Exception.Create('Error'); // - OnRaise event

finally

 ...

end;

// - OnExceptionNotify will be called

 

Code (Delphi)

try

raise Exception.Create('Error'); // - OnRaise event

except

 ...

end;

// - OnExceptionNotify will not be called, since exception was handled by the code

 

See this article for example of registering event handlers.

 

Sample event handler may look like this:

 

Code (Delphi)

procedure MyObject.OnExceptionNotify(AExceptionInfo: TEurekaExceptionInfo; var AHandle: Boolean; var ACallNextHandler: Boolean);

begin

 // Disable exception processing by EurekaLog

 Handle := False;

 ACallNextHandler := False;

end;

 

See also




Send feedback... Build date: 2014-08-27
Last edited: 2014-08-27
PRIVACY STATEMENT
The documentation team uses the feedback submitted to improve the EurekaLog documentation. We do not use your e-mail address for any other purpose. We will remove your e-mail address from our system after the issue you are reporting has been resolved. While we are working to resolve this issue, we may send you an e-mail message to request more information about your feedback. After the issues have been addressed, we may send you an email message to let you know that your feedback has been addressed.


Permanent link to this article: http://www.eurekalog.com/help/eurekalog/topic_type_EEvents_TELEvExceptionNotifyMeth.php