最小化一樣也沒問題的, 你隻要先找到它的句柄即可, 再找子線程句柄, 下面以電腦為例
'請先打開你的 電腦 再添加 Command1
Option Explicit
Private Declare FunXXction FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare FunXXction FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare FunXXction SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Const WM_SETTEXT = &HC
Const BM_CLICK = &HF5
Dim HwndVal&, ChildHwnd&, i&
Private Sub Command1_Click()
HwndVal = FindWindow(vbNullString, "電腦")
If HwndVal = 0 Then MsgBox "電腦沒運作": Exit Sub
Print "電腦的句柄是: " & CStr(HwndVal)
SendMessage HwndVal, WM_SETTEXT, 0, ByVal "CBM666 的電腦"
'标記的下面兩行是直接給電腦的TextBox指派
'ChildHwnd = FindWindowEx(HwndVal, 0, "Edit", vbNullString)
'If ChildHwnd <> 0 Then SendMessage ChildHwnd, WM_SETTEXT, 0, ByVal "123456789"
For i = 1 To 10
If i = 10 Then
ChildHwnd = FindWindowEx(HwndVal, 0, "Button", "=")
If ChildHwnd <> 0 Then SendMessage ChildHwnd, BM_CLICK, ByVal 0&, ByVal 0&
Else
ChildHwnd = FindWindowEx(HwndVal, 0, "Button", CStr(i))
If i < 9 Then
ChildHwnd = FindWindowEx(HwndVal, 0, "Button", "+")
End If
Next i
End Sub
'*************************** 模拟鍵盤輸入
'Dim Rtn&
'Private Sub Command1_Click()
' Rtn = Shell("Calc.EXE", 1) '執行小算盤。
' AppActivate Rtn '啟動小算盤。
' For i = 1 To 10 '設定回圈執行次數。
' If i = 10 Then
' SendKeys i & "=", True ' 按下按鍵給小算盤
' Else
' SendKeys i & "{+}", True ' 按下按鍵給小算盤
' End If
' Next i '将所有I 值相加。
'End Sub
---------------------------------------------------------
點選例子
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function SetForegroundWindow Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private ConstWM_CLOSE
Private ConstWM_QUIT
Private ConstWM_LBUTTONDOWN
Private ConstWM_LBUTTONUP
Private ConstBM_CLICK
Dim countNum As Single '下載下傳次數'
Dim DownloadUrlStr As String '下載下傳頁面'
Dim DownloadTimes As Integer '下載下傳間隔(秒)'
Private Sub Form_Load() '初始化'
TimerForStart.Enabled = False
TimeForClear.Enabled = False
TimeForClear.Interval = 1000
ConstWM_CLOSE = &H10
ConstWM_QUIT = &H12
WM_LBUTTONDOWN = &H201
WM_LBUTTONUP = &H202
ConstBM_CLICK = &HF5
End Sub
Private Sub SaveBtn_Click() '儲存'
DownloadUrlStr = UrlStr.Text
DownloadTimes = TimersStr.Text
TimerForStart.Interval = DownloadTimes * 1000
countNum = 0
TimersNow.Caption = 0
If DownloadUrlStr = "" Then
MsgBox "輸入網址"
Else
WebBrowser1.Navigate DownloadUrlStr
End If
Dim indexForHiapk As Long
Dim indexForAppChina As Long
indexForHiapk = InStr(UrlStr, "http://static.apk.hiapk.com")
indexForAppChina = InStr(UrlStr, "http://www.appchina.com")
If indexForHiapk <> 0 Then
StationName.Caption = "安卓網"
If indexForAppChina <> 0 Then
StationName.Caption = "應用彙"
Private Sub CountDownload() '累計下載下傳次數'
countNum = countNum + 1
TimersNow.Caption = countNum
Private Sub StartBtn_Click() '開始按鈕'
TimeForClear.Enabled = True
TimerForStart.Enabled = True
Private Sub StopBtn_Click() '停止按鈕'
Private Sub TimerForStart_Timer() '開始執行要做的事'
Call CountDownload
Call StartDownload
Private Sub TimeForClear_Timer() '清除下載下傳視窗'
Call SaveWinCon
Private Sub StartDownload() '開始下載下傳'
indexForHiapk = InStr(UrlStr, "***")
indexForAppChina = InStr(UrlStr, "***")
Call DownloadForHiapk
Call DownloadForAppChina
Private Sub DownloadForHiapk() 'hiapk'
Dim wb
Set wb = WebBrowser1.Document
For i = wb.All.length - 1 To 0 Step -1
If LCase(wb.All(i).tagname) = "a" Then
If wb.All(i).className = "d1" Then
wb.All(i).Click
Next
Private Sub DownloadForAppChina() 'appchina'
If wb.All(i).id = "dtpc" Then
'MsgBox "這裡"'
Private Sub SaveWinCon()
Dim Hwnd_SaveFile As Long
Dim Hwnd_ForBtn As Long
Dim RetVal As Long '有沒有關閉成功'
Dim RetValDown As Long '有沒有關閉成功'
Dim RetValUp As Long '有沒有關閉成功'
Hwnd_SaveFile = FindWindow(vbNullString, "檔案下載下傳")
Hwnd_ForBtn = FindWindowEx(Hwnd_SaveFile, 0, "Button", "取消")
SetForegroundWindow Hwnd_SaveFile
'關閉儲存視窗'
If Hwnd_ForBtn <> 0 Then
' RetVal = PostMessage(Hwnd_SaveFile, ConstWM_QUIT, 0&, 0&)'
' RetValDown = PostMessage(Hwnd_ForBtn, ConstWM_LBUTTONDOWN, 1&, 0&)'
' RetValUp = PostMessage(Hwnd_ForBtn, ConstWM_LBUTTONUP, 1&, 0&)'
'MsgBox RetValDown'
' MsgBox RetValUp'
SendMessage Hwnd_ForBtn, ConstBM_CLICK, ByVal 0&, ByVal 0&
If RetVal = 0 Then
'MsgBox "關閉出錯! "'
'MsgBox "成功關閉"'
' MsgBox "沒找到"'
End If

參考資料
<a href="http://www.cnblogs.com/del/archive/2008/02/28/1085432.html">http://www.cnblogs.com/del/archive/2008/02/28/1085432.html</a>
<a href="http://www.vbgood.com/api.html">http://www.vbgood.com/api.html</a>