无法隐藏进程答案

【问题标题】：cannot hide process无法隐藏进程
【发布时间】：2011-09-09 18:41:58
【问题描述】：

我想启动 calc.exe 并隐藏它
但只能启动exe不能隐藏
我的代码有什么错误？？

Imports System.Runtime.InteropServices
Imports System.IntPtr
Public Class Form1
    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _  
    Private Shared Function ShowWindowAsync(ByVal hwnd As IntPtr, ByVal nCmdShow As Integer) As Boolean
    End Function 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim a As IntPtr = Process.GetProcessesByName("Calc")(0).Id
        ShowWindowAsync(a, 0)
    End Sub
End Class

【问题讨论】：

你甚至没有开始这个过程。显然，您只是尝试搜索现有流程并尝试显示。您应该开始一个新进程，获取窗口的句柄（可能通过 MainWindowHandle 属性），然后将该句柄传递给 ShowWindow[Async]() 函数。
我试过 a=process.start("calc").handle 之后我将 a 传递给 showwindows，但它仍然没有工作。它只能运行calc，但不能隐藏它
隐藏 calc.exe 应用程序的目的是什么？为什么要隐藏它？如果它被隐藏了，任何人将如何使用该应用程序

标签： vb.net pinvoke user32

【解决方案1】：

我之前做过一个sn-p，它适用于任何进程，是两个通用函数，还具有递归模式并且易于使用：

#Region " Hide-Restore Process "

    ' [ Hide-Restore Process Function ]
    '
    ' // By Elektro H@cker
    '
    ' Examples :
    '
    ' Hide_Process(Process.GetCurrentProcess().MainModule.ModuleName, False)
    ' Hide_Process("notepad.exe", False)
    ' Hide_Process("notepad", True)
    '
    ' Restore_Process(Process.GetCurrentProcess().MainModule.ModuleName, False)
    ' Restore_Process("notepad.exe", False)
    ' Restore_Process("notepad", True)

    Dim Process_Handle_Dictionary As New Dictionary(Of String, IntPtr)

    <System.Runtime.InteropServices.DllImport("User32")> Private Shared Function ShowWindow(ByVal hwnd As IntPtr, ByVal nCmdShow As Int32) As Int32
    End Function

    Private Sub Hide_Process(ByVal Process_Name As String, Optional ByVal Recursive As Boolean = False)

        If Process_Name.ToLower.EndsWith(".exe") Then Process_Name = Process_Name.Substring(0, Process_Name.Length - 4)

        Dim proc() As Process = Process.GetProcessesByName(Process_Name)

        If Recursive Then
            For proc_num As Integer = 0 To proc.Length - 1
                Try
                    Process_Handle_Dictionary.Add(Process_Name & ";" & proc(proc_num).Handle.ToString, proc(proc_num).MainWindowHandle)
                    ShowWindow(proc(proc_num).MainWindowHandle, 0)
                Catch ex As Exception
                    ' MsgBox(ex.Message) ' The handle already exist in the Dictionary
                End Try
                Application.DoEvents()
            Next
        Else
            If Not proc.Length = 0 AndAlso Not proc(0).MainWindowHandle = 0 Then
                Process_Handle_Dictionary.Add(Process_Name & ";" & proc(0).Handle.ToString, proc(0).MainWindowHandle)
                ShowWindow(proc(0).MainWindowHandle, 0)
            End If
        End If

    End Sub

    Private Sub Restore_Process(ByVal Process_Name As String, Optional ByVal Recursive As Boolean = False)

        If Process_Name.ToLower.EndsWith(".exe") Then Process_Name = Process_Name.Substring(0, Process_Name.Length - 4)

        Dim Temp_Dictionary As New Dictionary(Of String, IntPtr) ' Replic of the "Process_Handle_Dictionary" dictionary
        For Each Process In Process_Handle_Dictionary : Temp_Dictionary.Add(Process.Key, Process.Value) : Next

        If Recursive Then
            For Each Process In Temp_Dictionary
                If Process.Key.ToLower.Contains(Process_Name.ToLower) Then
                    ShowWindow(Process.Value, 9)
                    Process_Handle_Dictionary.Remove(Process.Key)
                End If
                Application.DoEvents()
            Next
        Else
            For Each Process In Temp_Dictionary
                If Process.Key.ToLower.Contains(Process_Name.ToLower) Then
                    ShowWindow(Process.Value, 9)
                    Process_Handle_Dictionary.Remove(Process.Key)
                    Exit For
                End If
                Application.DoEvents()
            Next
        End If

    End Sub

#End Region

【讨论】：

【解决方案2】：

以下代码应该使用托管代码执行您想要的操作，但是当我使用 calc 尝试它时，它不会开始隐藏或最小化（其他 exe 按预期工作，所以它可能是 calc 的特殊之处？）

    Dim procStartInfo As New ProcessStartInfo
    Dim procExecuting As New Process

    With procStartInfo
        .FileName = "calc"
        .WindowStyle = ProcessWindowStyle.Hidden
    End With

    procExecuting = Process.Start(procStartInfo)

【讨论】：