這個問題來自論壇提問
Q:當我登入進入主介面時，在規定的時間內沒有做任何操作，系統就登出（就像電腦的屏保）。
A: 其實很簡單,參考一個api函數就可以了：GetLastInputInfo,以下是參考代碼
示範程式在你10秒內沒有任何滑鼠鍵盤活動既最小化，最小化後晃動滑鼠即可複原
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Text;
using
System.Windows.Forms;
using
System.Runtime.InteropServices;
namespace
WindowsApplication28
...
{
public
partial
class
Form1 : Form
...
{
[StructLayout(LayoutKind.Sequential)]
public
struct
LASTINPUTINFO
...
{
[MarshalAs(UnmanagedType.U4)]
public
int
cbSize;
[MarshalAs(UnmanagedType.U4)]
public
uint
dwTime;
}
[DllImport(
"
user32.dll
"
)]
public
static
extern
bool
GetLastInputInfo(
ref
LASTINPUTINFO plii);
public
long
getIdleTick()
...
{
LASTINPUTINFO vLastInputInfo
=
new
LASTINPUTINFO();
vLastInputInfo.cbSize
=
Marshal.SizeOf(vLastInputInfo);
if
(
!
GetLastInputInfo(
ref
vLastInputInfo))
return
0
;
return
Environment.TickCount
-
(
long
)vLastInputInfo.dwTime;
}
public
Form1()
...
{
InitializeComponent();
}
private
void
Form1_Load(
object
sender, EventArgs e)
...
{
this
.timer1.Interval
=
2000
;
this
.timer1.Enabled
=
true
;
}
private
void
timer1_Tick(
object
sender, EventArgs e)
...
{
long
i
=
getIdleTick();
this
.Text
=
string
.Format(
"
jinjazz說:您已經{0}ms沒有動了
"
,i);
if
(i
>
10
*
1000
)
...
{
this
.WindowState
=
FormWindowState.Minimized;
}
else
...
{
this
.WindowState
=
FormWindowState.Normal;
}
}
}
}
