1.VB后台按键

VB后台按键

       我有啊！后台

       为程序注册热键

       方法一：修改注册表

       Private Declare Function RegisterHotKey Lib "user" (ByVal hWnd As Long,按键s按随机音乐播放源码 ByVal id _

        As Long, ByVal fsModifiers As Long, ByVal vk As Long) As Long

       Private Declare Function UnregisterHotKey Lib "user" (ByVal hWnd As Long, ByVal id _

        As Long) As Long

       Private Declare Function PeekMessage Lib "user" Alias "PeekMessageA" (lpMsg As Msg, _ ByVal hWnd As Long, ByVal wMsgFilterMin As Long, ByVal wMsgFilterMax As Long, ByVal _ wRemoveMsg As Long) As Long

       Private Declare Function WaitMessage Lib "user" () As Long

       Private Type POINTAPI

        x As Long

        y As Long

       End Type

       Private Type Msg

        hWnd As Long

        Message As Long

        wParam As Long

        lParam As Long

        time As Long

        pt As POINTAPI

       End Type

       ' 声明常数

       Private Const MOD_ALT = &H1

       Private Const MOD_CONTROL = &H2

       Private Const MOD_SHIFT = &H4

       Private Const PM_REMOVE = &H1

       Private Const WM_HOTKEY = &H

       Private HotKey_Fg As Boolean

       Private Sub Form_Load()

        Dim Message As Msg

        '注册 Ctrl+Y 为热键

        RegisterHotKey Me.hWnd, &HBFFF&, MOD_CONTROL, vbKeyY

        'RegisterHotKey Me.hWnd, &HBFF2&, MOD_CONTROL, vbKeyU 为ctrl+U

        '把MOD_CONTROL改为0 ，vbkeyY改为F1就试试

        Me.Show

        Form1.Hide

        '等待处理消息

        HotKey_Fg = False

        Do While Not HotKey_Fg

        '等待消息

        WaitMessage

        '检查是源码狼奔源码否热键被按下

        If PeekMessage(Message, Me.hWnd, WM_HOTKEY, WM_HOTKEY, PM_REMOVE) Then

        Form1.Show '这里是处理过程

        End If

        '转让控制权,允许操作系统处理其他事件

        DoEvents

        Loop

       End Sub

       Private Sub Form_Unload(Cancel As Integer)

        HotKey_Fg = True

        '撤销热键的注册

        Call UnregisterHotKey(Me.hWnd, &HBFFF&)

       End Sub

       方法二：SendMessage

       Private Declare Function SendMessage Lib "user" Alias "SendMessageA" (ByVal hwnd As _ Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

       Private Const WM_SETHOTKEY = &H

       Private Const HOTKEYF_SHIFT = &H1

       Private Const HOTKEYF_ALT = &H4

       Private Sub Form_Load()

        Dim l As Long

        Dim wHotkey As Long

        wHotkey = (HOTKEYF_ALT) * (2 ^ 8) + '定义ALT+A为热键

        l = SendMessage(Me.hwnd, WM_SETHOTKEY, wHotkey, 0)

       End Sub