keyenabled.frm

很好的教程原代码！

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdTS 
      Caption         =   "禁止"
      Height          =   735
      Left            =   960
      TabIndex        =   0
      Top             =   1200
      Width           =   1815
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" _
    (ByVal uAction As Long, _
    ByVal uParam As Long, _
    ByVal lpvParam As Any, _
    ByVal fuWinIni As Long _
    ) As Long
Private Const SPI_SCREENSAVERRUNNING = 97&

'全局变量
'tsEnabled表示当前是否可用
Dim tsEnabled As Boolean
'
'禁止或允许使用
Private Sub FastTaskSwitching(bEnabled As Boolean)
    Dim X As Long
    Dim bDisabled As Long
    bDisabled = Not bEnabled
    X = SystemParametersInfo(SPI_SCREENSAVERRUNNING, bDisabled, CStr(1), 0)
End Sub
'
Private Sub cmdTS_Click()
    If tsEnabled Then
        cmdTS.Caption = "允许"
        FastTaskSwitching False
    Else
        cmdTS.Caption = "禁止"
        FastTaskSwitching True
    End If
    tsEnabled = Not tsEnabled
End Sub
'
Private Sub Form_Load()
    '初始化变量
    tsEnabled = True
    cmdTS.Caption = "禁止"
End Sub