我試圖dublicate記錄在DataSet中。TvarRec並釋放在delphi中的內存
procedure TMSExtQuery.CloneCurRecord(IgnoreFields: array of const);
begin
AppendRecord(RecordFieldsValue(IgnoreFields));
end;
function TMSExtQuery.RecordFieldsValue(IgnoreFields: array of const): TFieldsArray;
var
Idx: integer;
V: Variant;
begin
SetLength(Result, FieldCount);
for Idx := 0 to Pred(FieldCount) do
begin
if not FieldInArray(Fields[Idx], IgnoreFields) then
Result[Idx] := VarToVarRec(Fields[Idx].Value)
else
Result[Idx] := VarToVarRec(Null);
end;
end;
function VarToVarRec(const AInput: Variant): TVarRec;
begin
New(Result.VVariant);
Result.VType := vtVariant;
Result.VVariant^ := AInput;
end;
當我創建一個動態變量時,我必須釋放爲它分配的內存。 例如:
function VarToVarRec(const AInput: Variant): TVarRec;
var
V: PVariant;
begin
New(V);
V^ := AInput;
Result.VType := vtVariant;
Result.VVariant := V;
Dispose(V);
end;
當我做
New(Result.VVariant);
我必須釋放內存太大,或者它德爾福?