// 注册设备回调
private void button4_Click(object sender, EventArgs e)
{
if (m_devStatusCallback != null)
{
return;
}
this.labelthread = new Thread(new ThreadStart(this.updateLabelTextValue));
this.labelthread.Start();
m_devStatusCallback = new DevStatusCallBack(devStatus_Callback);
IntPtr p = new IntPtr(0);
_extern_setDevStatusHandler(m_devStatusCallback, p);
}
public static extern DevStatusCallBack _extern_setDevStatusHandler(DevStatusCallBack statusCallback, IntPtr pContext);