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UnhandledExceptionFilter info  Overview  Group

The UnhandledExceptionFilter function passes unhandled exceptions to the debugger, if the process is being debugged. Otherwise, it optionally displays an Application Error message box and causes the exception handler to be executed. This function can be called only from within the filter expression of a try-except exception handler.

LONG UnhandledExceptionFilter(

    STRUCT _EXCEPTION_POINTERS *ExceptionInfo 

// address of exception info

   );

Parameters

ExceptionInfo
Points to an EXCEPTION_POINTERS structure containing a description of the exception and the processor context at the time of the exception. This pointer is the return value of a call to the GetExceptionInformation function.

Return Values

The function returns one of the following values:

Value

Meaning

EXCEPTION_CONTINUE_SEARCH

The process is being debugged, so the exception should be passed (as second chance) to the application’s debugger.

EXCEPTION_EXECUTE_HANDLER

If the SEM_NOGPFAULTERRORBOX flag was specified in a previous call to SetErrorMode, no Application Error message box is displayed. The function returns control to the exception handler, which is free to take any appropriate action.

Remarks

If the process is not being debugged, the function displays an Application Error message box, depending on the current error mode. The default behavior is to display the dialog box, but this can be disabled by specifying SEM_NOGPFAULTERRORBOX in a call to the SetErrorMode function.

The system uses UnhandledExceptionFilter internally to handle exceptions that occur during process and thread creation.

See Also

EXCEPTION_POINTERS, GetExceptionInformation, SetErrorMode, SetUnhandledExceptionFilter, UnhandledExceptionFilter 

See also:


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