const
sc_drag=$F012;procedure TForm1.Button1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
ReleaseCapture;
TWinControl(Sender).Perform(wm_syscommand,sc_drag,0);
end;
sc_drag=$F012;procedure TForm1.Button1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
ReleaseCapture;
TWinControl(Sender).Perform(wm_syscommand,sc_drag,0);
end;
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