VB的问题，来个知道的。。

知道进程名  能不能获取其窗口句柄?
举个例子？例如扫雷的进程？winmine.exe
获取其窗口句柄？
 
 

答案：用API函数，
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 * 1024 
End Type 
Const TH32CS_SNAPHEAPLIST = &H1 
Const TH32CS_SNAPPROCESS = &H2 
Const TH32CS_SNAPTHREAD = &H4 
Const TH32CS_SNAPMODULE = &H8 
Const TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST Or TH32CS_SNAPPROCESS Or TH32CS_SNAPTHREAD Or TH32CS_SNAPMODULE) 
Const TH32CS_INHERIT = &H80000000 
Private Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal dwFlags As Long, ByVal th32ProcessID As Long) As Long 
Private Declare Function Process32First Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long 
Private Declare Function Process32Next Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long 
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long 


'查找进程的函数 
Private Function fun_FindProcess(ByVal ProcessName As String) As Long 
Dim strdata As String 
Dim my As PROCESSENTRY32 
Dim l As Long 
Dim l1 As Long 
Dim mName As String 
Dim i As Integer, pid As Long 
l = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 
If l Then 
my.dwSize = 1060 
If (Process32First(l, my)) Then 
Do 
i = InStr(1, my.szExeFile, Chr(0)) 
mName = LCase(Left(my.szExeFile, i - 1)) 
If mName = LCase(ProcessName) Then 
pid = my.th32ProcessID 
fun_FindProcess = pid 
Exit Function 
End If 
Loop Until (Process32Next(l, my) < 1) 
End If 
l1 = CloseHandle(l) 
End If 
fun_FindProcess = 0 
End Function 


Private Sub Form_Load() 
if fun_FindProcess("winmine.exe") <> 0 then 
Text1.Text="winmine.exe程序已启动" 
Else 
Text1.Text = "" 
End If 
End Sub
用CreateToolhelp32SnapShot创建一个SnapShot句柄,
用Process32First来获取第一个进程,
判断进程的szExeFile是不是你所指定的进程名
用TerminateProcess关闭进程(注意,不能关闭比自己级别高的进程,修改进程级别用AdjustTokenPrivileges)
用Process32Next查看下一个进程,循环.

举例？
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
Private Const TH32CS_SNAPPROCESS = &H2
Private Const TH32CS_SNAPheaplist = &H1
Private Const TH32CS_SNAPthread = &H4
Private Const TH32CS_SNAPmodule = &H8
Private Const TH32CS_SNAPall = TH32CS_SNAPPROCESS + TH32CS_SNAPheaplist + TH32CS_SNAPthread + TH32CS_SNAPmodule
Private Const MAX_PATH As Integer = 260
Private Const PROCESS_TERMINATE = &H1

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

Private Sub Command1_Click()
Dim i As Long
Dim proc As PROCESSENTRY32
Dim snap As Long
Dim exename As String
Dim theloop As Long
Dim ret As ListItem
ListView1.ListItems.Clear '清空所有内容
snap = CreateToolhelpSnapshot(TH32CS_SNAPall, 0) '获得进程“快照”的句柄
proc.dwSize = Len(proc)
theloop = ProcessFirst(snap, proc) '获取第一个进程，并得到其返回值
i = 0
While theloop <> 0 '当返回值非零时继续获取下一个进程
exename = proc.szExeFile
Set ret = ListView1.ListItems.Add(, "first" & CStr(i), exename) '将进程名添加到第一项中
ListView1.ListItems("first" & CStr(i)).SubItems(1) = proc.th32ProcessID '将进程ID添加到第二项中
i = i + 1
theloop = ProcessNext(snap, proc)
Wend
CloseHandle snap '关闭进程“快照”句柄
End Sub

'终止进程
Private Sub Command2_Click()
Dim i As Long
Dim hand As Long
hand = OpenProcess(PROCESS_TERMINATE, True, CLng(ListView1.SelectedItem.SubItems(1))) '获取进程句柄
TerminateProcess hand, 0 '关闭进程
Call Command1_Click '调用查看进程来刷新进程列表
End Sub

Private Sub Form_Load()
Dim header As ColumnHeader
ListView1.View = lvwReport
ListView1.ColumnHeaders.Clear
Set header = ListView1.ColumnHeaders.Add(, "first", "进程", 4000) '设置ListView中项目的宽度，读者也可自行设置
Set header = ListView1.ColumnHeaders.Add(, "second", "ID", 1400)
ListView1.Refresh
End Sub
只能用CreateToolhelp32SnapShot函数加上进程枚举 然后再进行对比 来获取符合条件的句柄
这个比较麻烦 楼上代码修改下应该能行 

上一个：高分求VB下求mapx的最短路径
下一个：有关VB变量常量练习题！！高手进！！