uses
... ,imm;
type
...
Memo1: TMemo;
procedure Tdemo_Form.FormShow(Sender: TObject);
var
himc_handle:HIMC ;
begin
himc_handle := 0;
Memo1.SetFocus;
himc_handle := ImmGetContext(Memo1.Handle) ;
if himc_handle <> 0 then
begin
ImmAssociateContext(Memo1.Handle,0);
ImmReleaseContext(Memo1.Handle,himc_handle);
end;
end;