System.SysUtils.EExternal
Delphi
EExternal = class(Exception)
C++
class PASCALIMPLEMENTATION EExternal : public Exception
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
class | public | System.SysUtils.pas System.SysUtils.hpp |
System.SysUtils | System.SysUtils |
Description
EExternal is the exception class that captures external error information.
EExternal is the ancestor of all exception classes that represent external run-time errors.
Note: EExternal classes represent Win32 exception codes. The ExceptionRecord member points to a Win32 exception record:
type
PExceptionRecord = ^TExceptionRecord;
TExceptionRecord = record
ExceptionCode: Cardinal;
ExceptionFlags: Cardinal;
ExceptionRecord: PExceptionRecord;
ExceptionAddress: Pointer;
NumberParameters: Cardinal;
ExceptionInformation: array[0..14] of Cardinal;
end;
var ExceptionRecord: PExceptionRecord;
struct TExceptionRecord;
typedef TExceptionRecord *PExceptionRecord;
struct TExceptionRecord
{
unsigned ExceptionCode;
unsigned ExceptionFlags;
TExceptionRecord *ExceptionRecord;
void *ExceptionAddress;
unsigned NumberParameters;
unsigned ExceptionInformation[15];
};
Note: Under MAC OS, EExternal classes represent various run-time errors. EExternal has three fields with exception information:
ExceptionAddress
, which contains the address of the instruction that caused the error.AccessAddress
, the address that was being accessed when the error occurred.SignalNumber
, for exceptions raised by Macintosh signals.