procedure TForm1.Button1Click(Sender: TObject); var SysPowerStatus: TSystemPowerStatus; begin GetSystemPowerStatus(SysPowerStatus); if Boolean(SysPowerStatus.ACLineStatus) then begin ShowMessage('System running on AC.'); end else begin ShowMessage('System running on battery.');
ShowMessage(Format('Battery power left: %d percent.', [SysPowerStatus.BatteryLifePercent])); end; end;