Question

vb 如何获取在后台运行的程序的信息

如何用vb编写一个程序，这个程序可以获取一个在后台运行的exe文件的信息，比如这个exe文件的文本框的text属性，还可以给文本框赋值 本人qq:396444855 望各位高手指点迷津

Answer 1

就是任务管理器吧，下面是找到的资料
有的控件要自己添加一下
Option Explicit

Private Declare Function CreateToolhelpSnapshot Lib "kernel32" Alias "CreateToolhelp32Snapshot" (ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Private Declare Function ProcessFirst Lib "kernel32" Alias "Process32First" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Private Declare Function ProcessNext Lib "kernel32" Alias "Process32Next" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Private Declare Function TerminateProcess Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Const MAX_PATH As Integer = 260
Private Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * MAX_PATH
End Type
Const TH32CS_SNAPheaplist = &H1
Const TH32CS_SNAPPROCESS = &H2
Const TH32CS_SNAPthread = &H4
Const TH32CS_SNAPmodule = &H8
Const TH32CS_SNAPall = TH32CS_SNAPPROCESS + TH32CS_SNAPheaplist + TH32CS_SNAPthread + TH32CS_SNAPmodule

Private Sub Command1_Click()
Dim i As Long, lPid As Long
Dim Proc As PROCESSENTRY32
Dim hSnapShot As Long
ListView1.ListItems.Clear '清空ListView
hSnapShot = CreateToolhelpSnapshot(TH32CS_SNAPall, 0) '获得进程“快照”的句柄
Proc.dwSize = Len(Proc)
lPid = ProcessFirst(hSnapShot, Proc) '获取第一个进程的PROCESSENTRY32结构信息数据
i = 0
Do While lPid <> 0 '当返回值非零时继续获取下一个进程
ListView1.ListItems.Add , "a" & i, Hex(Proc.th32ProcessID) '将进程ID添加到ListView1第一列
ListView1.ListItems("a" & i).SubItems(1) = Proc.szExeFile '将进程名添加到ListView1第二列
i = i + 1
lPid = ProcessNext(hSnapShot, Proc) '循环获取下一个进程的PROCESSENTRY32结构信息数据
Loop
CloseHandle hSnapShot '关闭进程“快照”句柄
End Sub

Private Sub Command2_Click()
Dim lPHand As Long, TMBack As Long
If ListView1.SelectedItem.Text <> "" Then
If MsgBox("确实要结束进程[" & ListView1.SelectedItem.SubItems(1) & "]吗？", vbYesNo) = vbYes Then
lPHand = Val("&H" & ListView1.SelectedItem.Text)
lPHand = OpenProcess(1&, True, lPHand) '获取进程句柄
TMBack = TerminateProcess(lPHand, 0&) '关闭进程
If TMBack <> 0 Then
MsgBox ListView1.SelectedItem.SubItems(1) & "已经被终止！"
Else
MsgBox ListView1.SelectedItem.SubItems(1) & "不能被终止！"
End If
CloseHandle lPHand
Command1_Click '刷新进程列表
End If
End If
End Sub

Private Sub form_Load()
Me.Caption = "进程管理器"
Command1.Caption = "刷新"
Command2.Caption = "结束进程"
ListView1.ColumnHeaders.Clear
ListView1.ColumnHeaders.Add , "a", "进程ID", 600
ListView1.ColumnHeaders.Add , "b", "进程名", 4000
ListView1.View = lvwReport
Command1_Click '刷新进程列表
End Sub

参考资料：vb吧