易语言，取外部程序标签的标题，好像用的是虚拟控件，我取不到标签句柄！应该怎么才能获取标签标题

你好，这个问题很好解决的。

请把你那个窗口截图发来看一下。

有的标签可能是自绘的，所以会没有句柄的存在。

你追问发个图看一下就知道了。

希望我的回答对你有所帮助！Kiss灬小猪

根据你的反馈，回复如下：

假如进程名为12345678exe，则可以分三步解决：

一、定义数组a()，然后枚举所有进程，找出进程名为12345678exe的进程，并将其ID存入数组a()中

二、枚举所有窗口，取得对应的进程ID，然后与数组a()中的ID进行比较，若处于可见状态且ID相同，则将该数组元素置为空。

三、循环检验数组a(),如ID不为空，则终止此进程。

Private Declare Function EnumWindows Lib "user32dll" (ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long

首先枚举所有的窗口。

然后

Private Declare Function EnumWindows Lib "user32dll" (ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long

Private Declare Function GetWindowThreadProcessId Lib "user32dll" (ByVal hwnd As Long, ByRef lpdwProcessId As Long) As Long

判断窗口的所属进程。

建立一个集合。

最后通过索引显示就OK了。

您可以使用 GetWindow API 来列出窗口，其中包括子窗口。但是，调用 GetWindow 来执行此任务的应用程序存在陷入无限循环的风险或引用已销毁窗口的句柄的风险。使用 EnumWindows 枚举顶级窗口，使用 EnumChildWindows 枚举子窗口，或者使用 EnumThreadWindows 枚举与某个线程关联的所有非子窗口是首选方法，本文中将演示这一方法。

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更多信息EnumWindows 将枚举所有顶级窗口，但不枚举子窗口。EnumChildWindows 函数既不会枚举由特定窗口拥有的顶级窗口，也不会枚举任何其他拥有的窗口。EnumThreadWindows 函数将枚举与某个线程关联的所有非子窗口。此示例使用上述全部三个函数来列出它找到的窗口的类和标题。请注意，尽管所有窗口都有一个类，但并是所有窗口也都有一个标题。

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分步示例

在 Visual Basic 中启动一个新的项目。默认情况下创建 Form1。

添加两个 CommandButtons 和一个 TextBox。

将下面的代码复制到该窗体的模块中：

Option Explicit

Private Sub Command1_Click()

Dim lRet As Long, lParam As Long

Dim lhWnd As Long

lhWnd = Mehwnd ' Find the Form's Child Windows

' Comment the line above and uncomment the line below to

' enumerate Windows for the DeskTop rather than for the Form

'lhWnd = GetDesktopWindow() ' Find the Desktop's Child Windows

' enumerate the list

lRet = EnumChildWindows(lhWnd, AddressOf EnumChildProc, lParam)

End Sub

Private Sub Command2_Click()

Dim lRet As Long

Dim lParam As Long

'enumerate the list

lRet = EnumWindows(AddressOf EnumWinProc, lParam)

' How many Windows did we find

DebugPrint TopCount; " Total Top level Windows"

DebugPrint ChildCount; " Total Child Windows"

DebugPrint ThreadCount; " Total Thread Windows"

DebugPrint "For a grand total of "; TopCount + _

ChildCount + ThreadCount; " Windows!"

End Sub

添加包含以下代码的模块：

Option Explicit

Type RECT

Left As Long

Top As Long

Right As Long

Bottom As Long

End Type

Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, _

lpRect As RECT) As Long

Declare Function MoveWindow Lib "user32" (ByVal hwnd As Long, _

ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, _

ByVal nHeight As Long, ByVal bRepaint As Long) As Long

Declare Function GetDesktopWindow Lib "user32" () As Long

Declare Function EnumWindows Lib "user32" _

(ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long

Declare Function EnumChildWindows Lib "user32" (ByVal hWndParent _

As Long, ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long

Declare Function EnumThreadWindows Lib "user32" (ByVal dwThreadId _

As Long, ByVal lpfn As Long, ByVal lParam As Long) As Long

Declare Function GetWindowThreadProcessId Lib "user32" _

(ByVal hwnd As Long, lpdwProcessId As Long) As Long

Declare Function GetClassName Lib "user32" Alias "GetClassNameA" _

(ByVal hwnd As Long, ByVal lpClassName As String, _

ByVal nMaxCount As Long) As Long

Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" _

(ByVal hwnd As Long, ByVal lpString As String, _

ByVal cch As Long) As Long

Public TopCount As Integer ' Number of Top level Windows

Public ChildCount As Integer ' Number of Child Windows

Public ThreadCount As Integer ' Number of Thread Windows

Function EnumWinProc(ByVal lhWnd As Long, ByVal lParam As Long) _

As Long

Dim RetVal As Long, ProcessID As Long, ThreadID As Long

Dim WinClassBuf As String 255, WinTitleBuf As String 255

Dim WinClass As String, WinTitle As String

RetVal = GetClassName(lhWnd, WinClassBuf, 255)

WinClass = StripNulls(WinClassBuf) ' remove extra Nulls & spaces

RetVal = GetWindowText(lhWnd, WinTitleBuf, 255)

WinTitle = StripNulls(WinTitleBuf)

TopCount = TopCount + 1

' see the Windows Class and Title for each top level Window

DebugPrint "Top level Class = "; WinClass; ", Title = "; WinTitle

' Usually either enumerate Child or Thread Windows, not both

' In this example, EnumThreadWindows may produce a very long list!

RetVal = EnumChildWindows(lhWnd, AddressOf EnumChildProc, lParam)

ThreadID = GetWindowThreadProcessId(lhWnd, ProcessID)

RetVal = EnumThreadWindows(ThreadID, AddressOf EnumThreadProc, _

lParam)

EnumWinProc = True

End Function

Function EnumChildProc(ByVal lhWnd As Long, ByVal lParam As Long) _

As Long

Dim RetVal As Long

Dim WinClassBuf As String 255, WinTitleBuf As String 255

Dim WinClass As String, WinTitle As String

Dim WinRect As RECT

Dim WinWidth As Long, WinHeight As Long

RetVal = GetClassName(lhWnd, WinClassBuf, 255)

WinClass = StripNulls(WinClassBuf) ' remove extra Nulls & spaces

RetVal = GetWindowText(lhWnd, WinTitleBuf, 255)

WinTitle = StripNulls(WinTitleBuf)

ChildCount = ChildCount + 1

' see the Windows Class and Title for each Child Window enumerated

DebugPrint " Child Class = "; WinClass; ", Title = "; WinTitle

' You can find any type of Window by searching for its WinClass

If WinClass = "ThunderTextBox" Then ' TextBox Window

RetVal = GetWindowRect(lhWnd, WinRect) ' get current size

WinWidth = WinRectRight - WinRectLeft ' keep current width

WinHeight = (WinRectBottom - WinRectTop) 2 ' double height

RetVal = MoveWindow(lhWnd, 0, 0, WinWidth, WinHeight, True)

EnumChildProc = False

Else

EnumChildProc = True

End If

End Function

Function EnumThreadProc(ByVal lhWnd As Long, ByVal lParam As Long) _

As Long

Dim RetVal As Long

Dim WinClassBuf As String 255, WinTitleBuf As String 255

Dim WinClass As String, WinTitle As String

RetVal = GetClassName(lhWnd, WinClassBuf, 255)

WinClass = StripNulls(WinClassBuf) ' remove extra Nulls & spaces

RetVal = GetWindowText(lhWnd, WinTitleBuf, 255)

WinTitle = StripNulls(WinTitleBuf)

ThreadCount = ThreadCount + 1

' see the Windows Class and Title for top level Window

DebugPrint "Thread Window Class = "; WinClass; ", Title = "; _

WinTitle

EnumThreadProc = True

End Function

Public Function StripNulls(OriginalStr As String) As String

' This removes the extra Nulls so String comparisons will work

If (InStr(OriginalStr, Chr(0)) > 0) Then

OriginalStr = Left(OriginalStr, InStr(OriginalStr, Chr(0)) - 1)

End If

StripNulls = OriginalStr

End Function

运行项目并单击 Command1。这将枚举出该窗体的子窗口直至找到 TextBox，然后将 TextBox 的高度扩大一倍并将其移动到位置 (0, 0)（该窗体的左上方。）

单击 Command2。这会立即在即时窗口中列出所有顶级窗口及其子窗口以及与其线程关联的任何非子窗口的类和标题（如果存在）。请注意，这可以是一个非常长的列表，可能需要一段时间才能列出所有内容。

从“运行”菜单选择“结束”或单击“结束”按钮以停止程序。根据注释更改 Sub Command1_Click 中的代码以传递来自 GetDesktopWindow 的句柄。运行项目并单击 Command1 以枚举 DeskTop 的所有子窗口。请注意，完成此过程需要花费一些时间。

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