Msvm_Keyboard 類別的 PressKey 方法

模擬按下按鍵。 成功時，金鑰會處於關閉狀態。

語法

uint32 PressKey(
  [in] uint32 keyCode
);

參數

keyCode [in]

類型： uint32

要按下之按鍵的虛擬按鍵程式碼。 如需虛擬金鑰碼的清單，請參閱 虛擬金鑰代碼。

傳回值

類型： uint32

傳回值為零表示成功。 非零值表示無法修改索引鍵狀態。

已完成，沒有錯誤 (0)

已檢查方法參數 - 作業啟動 (4096)

失敗 (32768)

拒絕存取 (32769)

不支援 (32770)

狀態未知 ， (32771)

逾 時 (32772)

不正確參數 (32773)

系統用於 (32774)

此作業的狀態無效 ， (32775)

不正確的資料類型 (32776)

( 32777) 無法使用系統

記憶體不足 (32778)

備註

PressKey方法會將參考對應至VK_MENU (18) ，VK_CONTROL ( 17) ， 和VK_SHIFT (16 ) 分別 ( VK_LMENU 164) 、VK_LCONTROL (162) 和VK_LSHIFT (160) ，因為VK_MENU、VK_CONTROL和VK_SHIFT虛擬按鍵碼不代表鍵盤上的實際按鍵。

Msvm_Keyboard類別的存取可能會受限於 UAC 篩選。 如需詳細資訊，請參閱 使用者帳戶控制和 WMI。

範例

下列 C# 範例會模擬按下按鍵。 您可以在虛擬 範例的常見公用程式中找到參考的公用程式， (V2) 。

using System;
using System.Management;

namespace HyperVSamples
{
    class PressKeyClass
    {
        static ManagementObject GetComputerKeyboard(ManagementObject vm)
        {
            ManagementObjectCollection keyboardCollection = vm.GetRelated
            (
                "Msvm_Keyboard",
                "Msvm_SystemDevice",
                null,
                null,
                "PartComponent",
                "GroupComponent",
                false,
                null
            );

            ManagementObject keyboard = null;

            foreach (ManagementObject instance in keyboardCollection)
            {
                keyboard = instance;
                break;
            }

            return keyboard;
        }

        static void PressKey(string vmName, int keyCode)
        {
            ManagementScope scope = new ManagementScope(@"root\virtualization\v2", null);
            ManagementObject vm = Utility.GetTargetComputer(vmName, scope);
            ManagementObject keyboard = GetComputerKeyboard(vm);

            ManagementBaseObject inParams = keyboard.GetMethodParameters("PressKey");

            inParams["keyCode"] = keyCode;

            ManagementBaseObject outParams = keyboard.InvokeMethod("PressKey", inParams, null);

            if ((UInt16)outParams["ReturnValue"] == ReturnCode.Completed)
            {
                string.Format("Key {0} was pressed on {1}", keyCode, vm["ElementName"]);
            }
            else
            {
                string.Format("Unable to press key {0}' on {1}", keyCode, vm["ElementName"]);
            }

            inParams.Dispose();
            outParams.Dispose();
            keyboard.Dispose();
            vm.Dispose();
        }

        static void Main(string[] args)
        {
            if (args != null && args.Length != 2)
            {
                Console.WriteLine("Usage: PressKey vmName keyCode");
                return;
            }
            string vmName = args[0];
            int keyCode = int.Parse(args[1]);
            PressKey(args[0], keyCode);
        }

    }
}

下列 Visual Basic Scripting Edition (VBScript) 範例會模擬按下按鍵。

option explicit 

dim objWMIService
dim fileSystem
const wmiSuccessful = 0

Main()

'-----------------------------------------------------------------
' Main routine
'-----------------------------------------------------------------
Sub Main()
    
    dim computer, objArgs, vmName, computerSystem, keycode, keyboard
    
    set fileSystem = Wscript.CreateObject("Scripting.FileSystemObject")

    computer = "."
    set objWMIService = GetObject("winmgmts:\\" & computer & "\root\virtualization\v2")

    set objArgs = WScript.Arguments
    if WScript.Arguments.Count = 2 then
       vmName= objArgs.Unnamed.Item(0)
       keycode = objArgs.Unnamed.Item(1)
    else
       WScript.Echo "usage: cscript PressKey.vbs vmName keycode"
       WScript.Quit
    end if
    
    set computerSystem = GetComputerSystem(vmName)
    set keyboard = GetComputerKeyboard(computerSystem)

    if PressKey(keyboard, keycode) then

        WriteLog "Done"
        WScript.Quit(0)
    else
        WriteLog "PressKey failed"
        WScript.Quit(1)
    end if

End Sub

'-----------------------------------------------------------------
' Retrieve Msvm_VirtualComputerSystem from base on its ElementName
' 
'-----------------------------------------------------------------
Function GetComputerSystem(vmElementName)
    dim query
    On Error Resume Next
    query = Format1("select * from Msvm_ComputerSystem where ElementName = '{0}'", vmElementName)
    set GetComputerSystem = objWMIService.ExecQuery(query).ItemIndex(0)
    if (Err.Number <> 0) then
        WriteLog Format1("Err.Number: {0}", Err.Number)
        WriteLog Format1("Err.Description:{0}",Err.Description)
        WScript.Quit(1)
    end if
End Function


'-----------------------------------------------------------------
' Retrieve Msvm_Keyboard from given computer system
' 
'-----------------------------------------------------------------
Function GetComputerKeyboard(computerSystem)
    dim query
    On Error Resume Next
    query = Format1("ASSOCIATORS OF {{0}} WHERE resultClass = Msvm_Keyboard", computerSystem.Path_.Path)
    set GetComputerKeyboard = objWMIService.ExecQuery(query).ItemIndex(0)
    if (Err.Number <> 0) then
        WriteLog Format1("Err.Number: {0}", Err.Number)
        WriteLog Format1("Err.Description:{0}",Err.Description)
        WScript.Quit(1)
    end if
End Function

'-----------------------------------------------------------------
' Press the key with the given key code on the given keyboard
'-----------------------------------------------------------------
Function PressKey(keyboard, keyCode)
    WriteLog Format2("PressKey({0}, {1})", keyboard.ElementName, keyCode)
    
    dim objInParam, objOutParams
    
    PressKey = false
    set objInParam = keyboard.Methods_("PressKey").InParameters.SpawnInstance_()
    objInParam.keyCode = keyCode

    set objOutParams = keyboard.ExecMethod_("PressKey", objInParam)

    if objOutParams.ReturnValue = wmiSuccessful then
        WriteLog Format2("The key with code '{0}' is typed on {1}.", keyCode, keyboard.ElementName)
        PressKey = true
    end if

End Function

'-----------------------------------------------------------------
' Create the console log files.
'-----------------------------------------------------------------
Sub WriteLog(line)
    dim fileStream
    set fileStream = fileSystem.OpenTextFile(".\PressKey.log", 8, true)
    WScript.Echo line
    fileStream.WriteLine line
    fileStream.Close

End Sub


'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format2(myString, arg0, arg1)
    Format2 = Format1(myString, arg0)
    Format2 = Replace(Format2, "{1}", arg1)
End Function

'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format1(myString, arg0)
    Format1 = Replace(myString, "{0}", arg0)
End Function

規格需求

需求	值
最低支援的用戶端	Windows 8 [僅限傳統型應用程式]
最低支援的伺服器	Windows Server 2012 [僅限傳統型應用程式]
命名空間	Root\Virtualization\V2
MOF	WindowsVirtualization.V2.mof
DLL	Vmms.exe

另請參閱

Msvm_Keyboard

虛擬金鑰代碼