VB.NET 通过窗口句柄，获取webbrowser控件HTML内容

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VB.NET 通过窗口句柄，获取webbrowser控件HTML内容

VB.NET通过窗口句柄，获取webbrowser控件HTML内容

通过Sendmessage获取IE浏览器内容 webbrowser控件内容获取

Class Win32API

<DllImport("user32.dll", EntryPoint:="FindWindow")> _
Public Shared Function FindWindow(ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
End Function

<DllImport("user32.dll", EntryPoint:="FindWindowEx")> _
Public Shared Function FindWindowEx(ByVal hwndParent As IntPtr, ByVal hwndChildAfter As IntPtr, ByVal lpszClass As String, ByVal lpszWindow As String) As IntPtr
End Function

<DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Public Shared Function RegisterWindowMessage(ByVal lpString As String) As UInteger
End Function

<DllImport("oleacc.dll", PreserveSig:=False)> _
Public Shared Function ObjectFromLresult(ByVal lResult As UIntPtr, <MarshalAs(UnmanagedType.LPStruct)> ByVal refiid As Guid, ByVal wParam As IntPtr) As <MarshalAs(UnmanagedType.[Interface])> Object
End Function

<DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Public Shared Function SendMessageTimeout(ByVal hWnd As IntPtr, ByVal Msg As UInteger, ByVal wParam As UIntPtr, ByVal lParam As IntPtr, ByVal fuFlags As SendMessageTimeoutFlags, ByVal uTimeout As UInteger, _
ByRef lpdwResult As UIntPtr) As IntPtr
End Function

Public Enum SendMessageTimeoutFlags As UInteger
SMTO_NORMAL = &H0
SMTO_BLOCK = &H1
SMTO_ABORTIFHUNG = &H2
SMTO_NOTIMEOUTIFNOTHUNG = &H8
End Enum

End Class
Public Class IEWindow
Public Shared Function GetIEWindowDocument2(ByVal editHWnd5 As IntPtr) As HTMLDocumentClass
Dim lRes As New UIntPtr()

Dim app2_GenerateEvent As UInteger = Win32API.RegisterWindowMessage("WM_HTML_GETOBJECT")
Win32API.SendMessageTimeout(editHWnd5, app2_GenerateEvent, UIntPtr.Zero, IntPtr.Zero, Win32API.SendMessageTimeoutFlags.SMTO_NOTIMEOUTIFNOTHUNG, 1000, _
lRes)

Dim obj As HTMLDocumentClass = DirectCast(Win32API.ObjectFromLresult(lRes, GetType(IHTMLDocument).GUID, IntPtr.Zero), HTMLDocumentClass)
Return obj
End Function
Public Shared Function GetIEWindowDocument(ByVal windowName As String) As HTMLDocumentClass
Dim lRes As New UIntPtr()
Dim parentHWnd As IntPtr = Win32API.FindWindow(Nothing, windowName)
MessageBox.Show(parentHWnd.ToString())
Dim editHWnd As IntPtr = Win32API.FindWindowEx(parentHWnd, IntPtr.Zero, "SplitterBar", "")
'需要查找的子窗口的类名，也就是输入框
MessageBox.Show(editHWnd.ToString())
Dim editHWnd1 As IntPtr = Win32API.FindWindowEx(editHWnd, IntPtr.Zero, "StandardWindow", "")
'需要查找的子窗口的类名，也就是输入框
MessageBox.Show(editHWnd1.ToString())
Dim editHWnd2 As IntPtr = Win32API.FindWindowEx(editHWnd1, IntPtr.Zero, "SimpleBrowser", "")
'需要查找的子窗口的类名，也就是输入框
Dim editHWnd3 As IntPtr = Win32API.FindWindowEx(editHWnd2, IntPtr.Zero, "Shell Embedding", "")
'需要查找的子窗口的类名，也就是输入框
Dim editHWnd4 As IntPtr = Win32API.FindWindowEx(editHWnd3, IntPtr.Zero, "Shell DocObject View", "")
'需要查找的子窗口的类名，也就是输入框
MessageBox.Show("Shell DocObject View" & editHWnd2.ToString())
Dim editHWnd5 As IntPtr = Win32API.FindWindowEx(editHWnd4, IntPtr.Zero, "Internet Explorer_Server", "")
'需要查找的子窗口的类名，也就是输入框
MessageBox.Show(editHWnd3.ToString())

Dim app2_GenerateEvent As UInteger = Win32API.RegisterWindowMessage("WM_HTML_GETOBJECT")
Win32API.SendMessageTimeout(editHWnd5, app2_GenerateEvent, UIntPtr.Zero, IntPtr.Zero, Win32API.SendMessageTimeoutFlags.SMTO_NOTIMEOUTIFNOTHUNG, 1000, _
lRes)

Dim obj As HTMLDocumentClass = DirectCast(Win32API.ObjectFromLresult(lRes, GetType(IHTMLDocument).GUID, IntPtr.Zero), HTMLDocumentClass)
Return obj
End Function
End Class

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