使用DLL动态链接库屏蔽任意按键（VB调用）

' Module1.bas

Option Explicit
 
Private Const WM_KEYDOWN = &H100
Private Const WM_KEYUP = &H101
Private Const WM_SYSKEYDOWN = &H104
Private Const WM_SYSKEYUP = &H105
 
Public Type KBDLLHOOKSTRUCT
    vkCode As Long              ' 虚拟按键码(1--254)
    scanCode As Long            ' 硬件按键扫描码
    flags As Long               ' flags
    time As Long                ' 消息时间戳
    dwExtraInfo As Long         ' 额外信息
End Type
 
Public Enum KEYACTION
    ACTION_KEYDOWN = WM_KEYDOWN
    ACTION_KEYUP = WM_KEYUP
    ACTION_SYSKEYDOWN = WM_SYSKEYDOWN
    ACTION_SYSKEYUP = WM_SYSKEYUP
End Enum
 
' 全局键盘钩子回调函数
' 参数: action 标识键盘消息(按下,弹起), keyStruct 包含按键信息
Public Function KeyboardProc(ByVal action As KEYACTION, keyStruct As KBDLLHOOKSTRUCT) As Boolean
    Select Case action
        Case ACTION_KEYDOWN
            Debug.Print keyStruct.vkCode, "按下键盘按键"
        Case ACTION_KEYUP
            Debug.Print keyStruct.vkCode, "弹起键盘按键"
        Case ACTION_SYSKEYDOWN
       
        Case ACTION_SYSKEYUP
       
    End Select
   
    ' 返回 True 表示继续传递按键消息
    ' 返回 False 表示结束按键消息传递
    KeyboardProc = False
End Function

' Form1.frm
' 窗体上添加1个CommandButton，改名为cmdStartMask

Option Explicit
Private Declare Function StartMaskKey Lib "MaskKey" (lpdwVirtualKey As Long, ByVal nLength As Long, Optional ByVal bDisableKeyboard As Boolean = False) As Long
Private Declare Function StopMaskKey Lib "MaskKey" () As Long
   
Private Sub cmdStartMask_Click()
    Dim key(7) As Long
    key(0) = vbKeyPageUp
    key(1) = vbKeyPageDown
    key(2) = vbKeyReturn
    key(3) = vbKeyLeft
    key(4) = vbKeyRight
    key(5) = vbKeyUp
    key(6) = vbKeyDown
    key(7) = vbKeySpace
If cmdStartMask.Caption = "开始屏蔽" Then
StartMaskKey key(0), UBound(key) + 1
cmdStartMask.Caption = "停止屏蔽"
Else
StopMaskKey
cmdStartMask.Caption = "开始屏蔽"
End If
End Sub
   
Private Sub Form_Unload(Cancel As Integer)
If cmdStartMask.Caption = "停止屏蔽" Then
StopMaskKey
End If
End Sub

成品DLL及VB demo下载地址：
https://download.csdn.net/download/hangvane123/10701404

MaskKey.dll源码及VC++调用请查看原文（原文下载链接已失效）

使用DLL动态链接库屏蔽任意按键（VB调用）

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