procedure TfrmMain.FormClose(Sender: TObject;var Action: TCloseAction);
var
i:integer;
begin
while self.MDIChildCount>0 do
for i:=0 to MDIChildCount-1 do
MdiChildren[0].free;
end;
var
i:integer;
begin
while self.MDIChildCount>0 do
for i:=0 to MDIChildCount-1 do
MdiChildren[0].free;
end;
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