Visual Studio 2012 ALT +數字Sendkeys不起作用

Question

您好，我正在製作一個vs2012項目，當計時器達到10秒時，程序將發送ALT + 2。 F1單獨使用sendkeys，但不適用於ALT TAB或ALT +數字。這裏有一些代碼我到目前爲止沒有奏效。

If mintCount = 16 Then SendKeys.Send("%2") 
    If mintCount = 16 Then SendKeys.Send("%(2)") 
    If mintCount = 16 Then SendKeys.Send("(%2)") 
    If mintCount = 16 Then SendKeys.Send("%{2}") 
    If mintCount = 16 Then SendKeys.Send("%{TAB}") 

任何建議或提示，將不勝感激謝謝你這麼多..

Answer 1

使用keyboard.sendkeys代替：

My.Computer.Keyboard.SendKeys（ 「％{TAB}」，真）

這應該發送alt選項卡到活動窗口和布爾值指定是否暫停應用程序，直到鍵擊已處理或不。

Answer 2

您可以使用我的InputHelper類。它P /調用WinAPI的原生SendInput()函數。它比SendKeys更靈活，還支持更多的按鍵！

InputHelper.vb：

Imports System.Runtime.InteropServices 

Public NotInheritable Class InputHelper 
    Private Sub New() 
    End Sub 

#Region "Methods" 
#Region "PressKey()" 
    ''' <summary> 
    ''' Virtually presses a key. 
    ''' </summary> 
    ''' <param name="Key">The key to press.</param> 
    ''' <param name="HardwareKey">Whether or not to press the key using its hardware scan code.</param> 
    ''' <remarks></remarks> 
    Public Shared Sub PressKey(ByVal Key As Keys, Optional ByVal HardwareKey As Boolean = False) 
     If HardwareKey = False Then 
      InputHelper.SetKeyState(Key, False) 
      InputHelper.SetKeyState(Key, True) 
     Else 
      InputHelper.SetHardwareKeyState(Key, False) 
      InputHelper.SetHardwareKeyState(Key, True) 
     End If 
    End Sub 
#End Region 

#Region "SetKeyState()" 
    ''' <summary> 
    ''' Virtually sends a key event. 
    ''' </summary> 
    ''' <param name="Key">The key of the event to send.</param> 
    ''' <param name="KeyUp">Whether to push down or release the key.</param> 
    ''' <remarks></remarks> 
    Public Shared Sub SetKeyState(ByVal Key As Keys, ByVal KeyUp As Boolean) 
     Key = ReplaceBadKeys(Key) 

     Dim KeyboardInput As New KEYBDINPUT With { 
      .wVk = Key, 
      .wScan = 0, 
      .time = 0, 
      .dwFlags = If(KeyUp, KEYEVENTF.KEYUP, 0), 
      .dwExtraInfo = IntPtr.Zero 
     } 

     Dim Union As New INPUTUNION With {.ki = KeyboardInput} 
     Dim Input As New INPUT With { 
      .type = INPUTTYPE.KEYBOARD, 
      .U = Union 
     } 

     SendInput(1, New INPUT() {Input}, Marshal.SizeOf(GetType(INPUT))) 
    End Sub 
#End Region 

#Region "SetHardwareKeyState()" 
    ''' <summary> 
    ''' Virtually sends a key event using the key's scan code. 
    ''' </summary> 
    ''' <param name="Key">The key of the event to send.</param> 
    ''' <param name="KeyUp">Whether to push down or release the key.</param> 
    ''' <remarks></remarks> 
    Public Shared Sub SetHardwareKeyState(ByVal Key As Keys, ByVal KeyUp As Boolean) 
     Key = ReplaceBadKeys(Key) 

     Dim KeyboardInput As New KEYBDINPUT With { 
      .wVk = 0, 
      .wScan = MapVirtualKeyEx(CUInt(Key), 0, GetKeyboardLayout(0)), 
      .time = 0, 
      .dwFlags = KEYEVENTF.SCANCODE Or If(KeyUp, KEYEVENTF.KEYUP, 0), 
      .dwExtraInfo = IntPtr.Zero 
     } 

     Dim Union As New INPUTUNION With {.ki = KeyboardInput} 
     Dim Input As New INPUT With { 
      .type = INPUTTYPE.KEYBOARD, 
      .U = Union 
     } 

     SendInput(1, New INPUT() {Input}, Marshal.SizeOf(GetType(INPUT))) 
    End Sub 
#End Region 

#Region "ReplaceBadKeys()" 
    ''' <summary> 
    ''' Replaces bad keys with their corresponding VK_* value. 
    ''' </summary> 
    ''' <remarks></remarks> 
    Private Shared Function ReplaceBadKeys(ByVal Key As Keys) As Keys 
     Dim ReturnValue As Keys = Key 

     If ReturnValue.HasFlag(Keys.Control) Then 
      ReturnValue = (ReturnValue And Not Keys.Control) Or Keys.ControlKey 'Replace Keys.Control with Keys.ControlKey. 
     End If 

     If ReturnValue.HasFlag(Keys.Shift) Then 
      ReturnValue = (ReturnValue And Not Keys.Shift) Or Keys.ShiftKey 'Replace Keys.Shift with Keys.ShiftKey. 
     End If 

     If ReturnValue.HasFlag(Keys.Alt) Then 
      ReturnValue = (ReturnValue And Not Keys.Alt) Or Keys.Menu 'Replace Keys.Alt with Keys.Menu. 
     End If 

     Return ReturnValue 
    End Function 
#End Region 
#End Region 

#Region "WinAPI P/Invokes" 
    <DllImport("user32.dll", SetLastError:=True)> 
    Private Shared Function SendInput(ByVal nInputs As UInteger, <MarshalAs(UnmanagedType.LPArray)> ByVal pInputs() As INPUT, ByVal cbSize As Integer) As UInteger 
    End Function 

    <DllImport("user32.dll")> _ 
    Private Shared Function MapVirtualKeyEx(uCode As UInteger, uMapType As UInteger, dwhkl As IntPtr) As UInteger 
    End Function 

    <DllImport("user32.dll")> _ 
    Private Shared Function GetKeyboardLayout(idThread As UInteger) As IntPtr 
    End Function 

#Region "Enumerations" 
    Private Enum INPUTTYPE As UInteger 
     MOUSE = 0 
     KEYBOARD = 1 
     HARDWARE = 2 
    End Enum 

    <Flags()> _ 
    Private Enum KEYEVENTF As UInteger 
     EXTENDEDKEY = &H1 
     KEYUP = &H2 
     SCANCODE = &H8 
     UNICODE = &H4 
    End Enum 
#End Region 

#Region "Structures" 
    <StructLayout(LayoutKind.Explicit)> _ 
    Private Structure INPUTUNION 
     <FieldOffset(0)> Public mi As MOUSEINPUT 
     <FieldOffset(0)> Public ki As KEYBDINPUT 
     <FieldOffset(0)> Public hi As HARDWAREINPUT 
    End Structure 

    Private Structure INPUT 
     Public type As Integer 
     Public U As INPUTUNION 
    End Structure 

    Private Structure MOUSEINPUT 
     Public dx As Integer 
     Public dy As Integer 
     Public mouseData As Integer 
     Public dwFlags As Integer 
     Public time As Integer 
     Public dwExtraInfo As IntPtr 
    End Structure 

    Private Structure KEYBDINPUT 
     Public wVk As UShort 
     Public wScan As Short 
     Public dwFlags As UInteger 
     Public time As Integer 
     Public dwExtraInfo As IntPtr 
    End Structure 

    Private Structure HARDWAREINPUT 
     Public uMsg As Integer 
     Public wParamL As Short 
     Public wParamH As Short 
    End Structure 
#End Region 
#End Region 
End Class 

用法：

InputHelper.SetKeyState(Keys.Alt, False) 'False = Hold ALT key down. 
InputHelper.PressKey(Keys.D2) 'Press "2". 
InputHelper.SetKeyState(Keys.Alt, True) 'True = Release ALT key.