[C#]偵測系統Power狀態的改變以及是否進入Sleep mode

namespace WindowsFormsApplication15 { public partial class Form1 : Form { public Form1() { InitializeComponent(); }

	private void Form1_Load(object sender, EventArgs e)
	{
		SystemEvents.PowerModeChanged += new PowerModeChangedEventHandler(SystemEvents_PowerModeChanged);
	}

	void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
	{
		textBox1.Text += e.Mode.ToString() + Environment.NewLine;
	}
}

}

namespace WindowsFormsApplication15 { public partial class Form1 : Form { private const int WM_POWERBROADCAST = 0x218; private const int PBT_APMSUSPEND = 0x4; private const int PBT_APMRESUMESUSPEND = 0x7; private const int PBT_APMRESUMEAUTOMATIC = 0x12; public Form1() { InitializeComponent(); }

	protected override void WndProc(ref Message m)
	{
		if(m.Msg == WM_POWERBROADCAST)
		{
			switch ((int)m.WParam)
			{
				case PBT_APMSUSPEND:
					textBox1.Text += "PBT_APMSUSPEND" + Environment.NewLine;
					break;
				case PBT_APMRESUMEAUTOMATIC:
					textBox1.Text += "PBT_APMRESUMEAUTOMATIC" + Environment.NewLine;
					break;
				case PBT_APMRESUMESUSPEND:
					textBox1.Text += "PBT_APMRESUMESUSPEND" + Environment.NewLine;
					break;
			}
		}
		base.WndProc(ref m);
	}
}

}

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