用消息映射啊
THImage = class(TGraphicControl)
private
procedure CMMouseEnter(var Message: TMessage); message CM_MOUSEENTER;
...procedure THImage.CMMouseEnter(var Message: TMessage);
begin
inherited;
dosomethingyourself;
...
THImage = class(TGraphicControl)
private
procedure CMMouseEnter(var Message: TMessage); message CM_MOUSEENTER;
...procedure THImage.CMMouseEnter(var Message: TMessage);
begin
inherited;
dosomethingyourself;
...
procedure TForm1.Edit2MouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
TWinControl(Sender).SetFocus();
end;