IsError
property IsError: Boolean read write;
Example
procedure ScriptEvent(var Value: Variant);
begin
if Action <> nil then
if Action.Log <> nil then
Value := Action.Log.IsError
else
Value := False
else
Value := False;
end;
Usage
IsError tests for exact Error status; its setter can change Boolean execution Status without making this computed value match.
Additional Technical Info
IsError is true only when overall StatusType is exactly flsError.
Writing true requests Error and always sets the separate Boolean Status false. If current StatusType is Test/Highlight (higher ordinal), the type remains unchanged and this getter remains false despite Boolean failure.
Writing false requests OK and sets Boolean Status true, but it cannot normally downgrade Error or a higher type. If the type was Error, IsError therefore still returns true after the false assignment while execution Status has become true.
The assignment creates no error/success message or exception record. This compatibility property is not a reliable symmetric toggle; prefer read-only checking and normal error/reset lifecycle operations.
Status changes can affect continuation, error-file movement, notification and persistence and are not synchronised.
Related entries
StatusType— exact two-field algorithm.IsSuccess— complementary exact OK check with similar mismatch.IsCancelled— only quick property whose false setter genuinely resets.