我需要在PowerShell中使用Win 32 API调用Imagehlp.dll中的MapFileAndCheckSumA函数。我已经尝试了一些类似的在线教程,例如这个链接: https://devblogs.microsoft.com/scripting/use-powershell-to-interact-with-the-windows-api-part-1/ 我尝试使用Add-Type命令来编译C#代码。我写的代码如下:
Add-Type -TypeDefinition @"
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
public static class Imagehlp
{
[DllImport("imagehlp.dll", CharSet=CharSet.Auto)]
public static extern bool MapFileAndCheckSumA(
[MarshalAs(UnmanagedType.LPStr)] string Filename,
UIntPtr HeaderSum,
UIntPtr CheckSum);
}
"@
$x = [UIntPtr]::new(5)
$y = [UIntPtr]::new(5)
[Imagehlp]::MapFileAndCheckSumA("C:\Program Files\Internet Explorer\iexplore.exe", $x,$y)
然而,当我执行代码的最后一行时,我会收到以下异常。
Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at Imagehlp.MapFileAndCheckSumA(String Filename, UIntPtr HeaderSum, UIntPtr CheckSum)
at CallSite.Target(Closure , CallSite , Type , String , Object , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute4[T0,T1,T2,T3,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)
at System.Management.Automation.Interpreter.DynamicInstruction`5.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.Interpreter.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.LightLambda.RunVoid1[T0](T0 arg0)
at System.Management.Automation.DlrScriptCommandProcessor.RunClause(Action`1 clause, Object dollarUnderbar, Object inputToProcess)
at System.Management.Automation.DlrScriptCommandProcessor.Complete()
at System.Management.Automation.CommandProcessorBase.DoComplete()
at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(CommandProcessorBase commandRequestingUpstreamCommandsToStop)
at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(Object input)
at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
at System.Management.Automation.Runspaces.PipelineThread.WorkerProc()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
我在网上搜索了这个异常,猜测这是由代码中的C#部分引起的编译错误。网上的解决方案说我需要从我正在使用的IDE更改编译设置,但我对PowerShell和C#都比较新,因此我不知道如何使其工作。你能帮我吗?
MapFileAndCheckSum
(没有A
)因为你使用了CharSet.Auto
。参数应该不是IntPtr
而是out int
(或uint
),然后在PowerShell中你可以使用[ref]
来传递参数。 - undefinedref
值。虽然函数输出为true,但是ref
值似乎没有发生变化。输出结果为:[ref]$x
值
5
- undefined