如何控制WebBrowser中显示的网页元素???

cytsesky 2004-02-14 07:40:18
例如WebBrowser中已显示有网页http://www.csdn.net,有什么方法可以控制WebBrowser控件中的元素,列表框/文本域等,谢谢
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cutemouse 2004-05-10
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转载

看到很多关于WebBrowser控件禁止右键的提问,回复的方法很多,其中有提到使用微软提供的Webbrowser扩展COM服务器对象(WBCustomizer.dll),但是该方法在我们想使用Webbrowser编辑网页(Webbrowser1.Document.execCommand "editMode")的时候有很多弊端,比如不能显示选中的文本等。另有些方法也就不用一一列举了。

这儿我想提到的是关于MSHTML.HTMLDocument

引用Microsoft HTML OBject Library

Rem #窗体代码#

Dim WithEvents M_Dom As MSHTML.HTMLDocument
Private Function M_Dom_oncontextmenu() As Boolean
M_Dom_oncontextmenu = False
End Function

Private Sub Webbrowser1_DownloadComplete()
Set M_Dom = Webbrowser1.Document
End Sub

Rem 好了,右键菜单没有了



===============================================================================

控件调用和获得收藏夹里面

基本上用 specialfolder(6 ) 就可以得到收藏夹的路径, 然后你可以用dir去循环读入每个目录,然后dir里面的file, file的名字就是你要的收藏的名字, 路径可以自己根据从上面得到的路径去得到.
如果你不用dir也可以用vb的dir控件.
Private Type SHITEMID
cb As Long
abID As Byte
End Type

Public Type ITEMIDLIST
mkid As SHITEMID
End Type
Public Function SpecialFolder(ByRef CSIDL As Long) As String
'locate the favorites folder
Dim R As Long
Dim sPath As String
Dim IDL As ITEMIDLIST
Const NOERROR = 0
Const MAX_LENGTH = 260
R = SHGetSpecialFolderLocation(MDIMain.hwnd, CSIDL, IDL)
If R = NOERROR Then
sPath = Space$(MAX_LENGTH)
R = SHGetPathFromIDList(ByVal IDL.mkid.cb, ByVal sPath)
If R Then
SpecialFolder = Left$(sPath, InStr(sPath, vbNullChar) - 1)
End If
End If
End Function
===================================================================================================
全屏

是的,webbrowser本生是一个控件, 你要它全屏,就是要它所在的窗体全屏, 可以用setwindowlong取消窗体的 title, 用Call ShowWindow(FindWindow("Shell_traywnd", ""), 0) 隐藏tray,就是下边那个包含开始那一行. 用Call ShowWindow(FindWindow("Shell_traywnd", ""), 9) 恢复. 够详细了吧.

然后在form1.windowstate = 2 就可以了.

==============================================================================================================
选择网页上的内容。
Private Sub Command1_Click()
'请先选中一些内容
Me.WebBrowser1.ExecWB OLECMDID_COPY, OLECMDEXECOPT_DODEFAULT
MsgBox Clipboard.GetText
End Sub

==============================================================================================================
用IE来下载文件
Private Declare Function DoFileDownload Lib "shdocvw.dll" (ByVal lpszFile As String) As Long


Private Sub Command1_Click()

Dim sDownload As String

sDownload = StrConv(Text1.Text, vbUnicode)
Call DoFileDownload(sDownload)

End Sub

Private Sub Form_Load()
Text1.Text = "http://www.chat.ru/~softdaily/fo-ag162.zip"
Form1.Caption = "Audiograbber 1.62 Full"
Text2.Text = "http://www6.50megs.com/audiograbber/demos/cr-ag161.zip"
End Sub


================================================================================================================

我要动态加载和删除WebBrowser控件应该怎么做?

Private Sub Command1_Click()
Form1.Controls.Add "shell.explorer.2", "NewWeb", Form1
With Form1!NewWeb
.Visible = True
.Width = 10000
.Height = 10000
.Left = 0
.Top = 0
.Navigate2 "www.csdn.net"
End With
End Sub

Private Sub Command2_Click()
Controls.Remove Form1!newweb
End Sub

Form1.Controls.Add "shell.explorer.2", newweb(newweb.Count), Form1
With Form1!newweb(newweb.Count)
.Visible = True
.Width = 1000
.Height = 1000
.Left = newweb(newweb.Count - 1).Left + newweb(newweb.Count - 1).Width
.Top = 0
'.Navigate2 "www.csdn.net"
End With
为什么他说我
Form1.Controls.Add "shell.explorer.2", newweb(newweb.Count), Form1
这一行错误13 类型不匹配?
ps:我在form中已经有了一个newweb(0)控件



先为一个WebBrowser
Dim i As Integer
Private Sub AddWeb_Click()
For i = 1 To 10
Load NewWeb(i)
NewWeb(i).Top = i * 100
NewWeb(i).Left = i * 100
NewWeb(i).Visible = True
Next i
End Sub

Private Sub DelWeb_Click()
For i = 1 To 10
Unload NewWeb(i)
Next i
End Sub

=============================================================================================================


一个把页面保存为MHT(即MHTML)文件
1、

谢谢楼上几位大侠!我现在将 pcwak(书剑狂生[MS MVP]) 大侠提供的资料贴出来,以供大家参考:
我终于找到一个把页面保存为MHT(即MHTML)文件的方法了!
首先,在工程中必须要引用一个库:
Library CDO
D:\WINNT\System32\cdosys.dll
Microsoft CDO for Windows 2000 Library
其次,需要Stream对应的接口的支持,如果你一时找不到就使用支持这个的较新的ADO就行了,如
Library ADODB
D:\Program Files\Common Files\system\ado\msado15.dll
Microsoft ActiveX Data Objects 2.5 Library
代码如下,十分简单(同时由于流的特点,显示在实际应用中没必要象本例中那样把文件保存到磁盘上就可直接转换为字符串或字节数组什么的处理的。

另,对于Microsoft CDO for Windows 2000 Library这个库,在WIN98中要怎么使用还没试过,感兴趣的朋友可以试试并跟帖,以丰富完善其内容:)

Private Sub Command1_Click()
' Reference to Microsoft ActiveX Data Objects 2.5 Library
' Reference to Microsoft CDO for Windows 2000 Library
Dim iMsg As New CDO.Message
Dim iConf As New CDO.Configuration
Dim objStream As ADODB.Stream

With iMsg
.CreateMHTMLBody "http://www.163.com/";, , _
"domain\username", _
"password"
Set objStream = .GetStream
Call objStream.SaveToFile("f:\test.mht", adSaveCreateOverWrite)
End With
End Sub

2、


'首先加入对ADODB和CDO(Microsoft CDO for Windows 2000 Library,对应文件名为CDOSYS.dll)的引用
Private Sub Command1_Click()
Dim message As New CDO.message
Dim Outstream As ADODB.Stream
On Error GoTo myerr1
Call message.CreateMHTMLBody("http://www.csdn.net", CDO.CdoMHTMLFlags.cdoSuppressNone, "", "")
Set Outstream = message.GetStream
Call Outstream.SaveToFile("c:\test.mht", ADODB.SaveOptionsEnum.adSaveCreateOverWrite)
MsgBox "完成"

Exit Sub
myerr1:
Set message = Nothing
Set Outstream = Nothing
End Sub

=================================================================================================================




请问高手们怎样在WebBrowser控件调用收藏夹和在收藏夹里添加收藏
Option Explicit

Private Sub Command1_Click()
Dim ObjSUH As New ShellUIHelper
ObjSUH.AddFavorite "http://www.csdn.net", "CSDN"
Set ObjSUH = Nothing
End Sub

=================================================================================================================
cutemouse 2004-05-10
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控制网页的FORMS行为

Private Sub Command2_Click()
With WebBrowser1.Document.Forms(0)
.c2.Checked = 1
.r1(1).Checked = 1
End With
End Sub


Private Sub Command2_Click()
With WebBrowser1.Document.Forms(0)
.d1.Options(1).Selected = 1
End With
End Sub

web.Document.getElementsByName("D1").Item(0).selectedIndex = 1

==============================================
<input type="radio" value="n" checked name="notecome">普通
<input type="radio" value="c" name="notecome">原创
<input type="radio" value="z" name="notecome">转帖
<input type="button" value="发送提交" name="button"

比如一个网页里有如上代码
我想选择原创
webbrowser中怎么写


Private Sub Command1_Click()
WebBrowser1.Navigate "c:\ggg.html"
End Sub

Private Sub Command2_Click()
Dim x

For Each x In WebBrowser1.Document.All("notecome")
If x.Value = "c" Then
x.Checked = True
End If
Next
End Sub

============================================================================================
假设你的HTML代码如下:

<html>
<script>
function abcd(){
alert("haha");
return false;
}
</script>

<body>
<a id = 'xxx' href=# onclick="abcd()">ggggg</a>
</body>
</html>

VB代码如下:
Private Sub Command1_Click()
WebBrowser1.Navigate "http://www.applevb.com/script_test.html"
End Sub

Private Sub Command2_Click()
Dim a, b
Dim d As IHTMLDocument2

For Each a In WebBrowser1.Document.All
Debug.Print a.tagName
If (a.tagName = "SCRIPT") Then

End If
If (a.tagName = "A") Then
If a.Id = "xxx" Then
a.FireEvent ("onclick")
End If
End If
Next

点击Command1浏览这个网页,点击Command2运行其中的脚本abcd。


==============================================

怎么编程把用户名,密码提交到网页上的登录页?
首先在程序中加入Webbrowser控件并加入引用 Microsoft HTML Object Library。
假设你的HTML页面表单代码如下:
<form method="POST" action="http://chen/dll/chat/chatmain.exe/RegUser">
<p>请填写下面表单注册(*项为必添项)</p>
<p>*姓名<input type="text" name="Name" size="20"></p>
<p>*昵称<input type="text" name="NickName" size="20"></p>
<p>电子邮件<input type="text" name="EMail" size="20"></p>
<p>*密码<input type="text" name="Password" size="20"></p>
<p><input type="submit" value="提交" name="B1"><input type="reset" value="全部重写" name="B2"></p>
</form>
注意其中元素的type、Name、value属性。然后VB中的代码如下:
Private Sub Command1_Click()
WebBrowser1.Navigate "http://chen/chat/newuser.htm"
End Sub

Private Sub WebBrowser1_DocumentComplete(ByVal pDisp As Object, URL As Variant)
Dim vDoc, vTag
Dim i As Integer

Set vDoc = WebBrowser1.Document
List1.Clear
For i = 0 To vDoc.All.length - 1
If UCase(vDoc.All(i).tagName) = "INPUT" Then
Set vTag = vDoc.All(i)
If vTag.Type = "text" Or vTag.Type = "password" Then
List1.AddItem vTag.Name
Select Case vTag.Name
Case "Name"
vTag.Value = "IMGod"
Case "NickName"
vTag.Value = "IMGod"
Case "Password"
vTag.Value = "IMGodpass"
Case "EMail"
vTag.Value = "IMGod@paradise.com"
End Select
ElseIf vTag.Type = "submit" Then
vTag.Click
End If
End If
Next i
End Sub
点击Command1就可以自动填表并提交了。


=====================================================================================
调用forms下的Submit控件的Click事件,我会做,但我不想这么做.

有没有办法直接调用类似于:web1.document.forms.submit,这句语句我怎么写都不成功
是这个
Webbrowser1.document.formName.submit()

不能用,formname为form1所以我调用Webbrowser1.document.form1.submit
出错类型:对象不支持该属性或方法,
然后调用Webbrowser1.document.forms(0).submit()
出错类型同上
Private Sub Command1_Click()
WebBrowser1.Navigate "http://localhost/webapplication2/MyLogonPage.aspx"
End Sub

Private Sub Command2_Click()
WebBrowser1.Document.All("Form1").submit
End Sub
<form name="form1" method="post" action="aa.asp">
......
<input name="reset" type="reset" vlaue="reset" class="button">
</form>
我本想把reset的type改成submit 再提交,可出错,type是只读属性,不能修改,我只要有办法把这页面递交出去就行,当然,用POST也不行,参数太多,组合方式太多


你用下面的代码试一下你的页面:


Private Sub Command1_Click()
WebBrowser1.Navigate "http://oakhome.xicp.net/webapplication2/MyLogonPage.aspx"
End Sub

Private Sub Command2_Click()
Dim x

On Error Resume Next
For Each x In WebBrowser1.Document.All
List1.AddItem x.Name
Next
End Sub

看看在List1里面列出来的页面元素的名字有没有Form1
找到原因了,你的页面是这样的:
<input language="javascript" onclick="if (typeof(Page_ClientValidate) == 'function') Page_ClientValidate(); " name="Submit1" id="Submit1" type="submit" value="Submit" />
你把name="Submit1" 改成name="Submit"肯定就不会成功了,很不幸的是我要提交的页面中就有这样一句,现在可有办法解决吗???

=======================================================================
使用WebBrowser_V1接受消息

Private WithEvents WebMessage As WebBrowser_V1

Private Sub Form_Load()
Set WebMessage = WebBrowser1.Object
End Sub

Private Sub WebMessage_NewWindow(ByVal URL As String, ByVal Flags As Long, ByVal TargetFrameName As String, PostData As Variant, ByVal Headers As String, Processed As Boolean)

'这里有Flags变量可以取得窗体应有的状态

End Sub

具体值需要你自己去试试看。对象浏览器里面没有

=======================================================================================================

通过下面的方法遍历页面中的IFrame:

Sub EnumFrames(ByVal wb As WebBrowser)
Dim pContainer As olelib.IOleContainer
Dim pEnumerator As olelib.IEnumUnknown
Dim pUnk As olelib.IUnknown
Dim pBrowser As SHDocVw.IWebBrowser2

Set pContainer = wb.Object.Document

' Get an enumerator for the frames
If pContainer.EnumObjects(OLECONTF_EMBEDDINGS, pEnumerator) = 0 Then

Set pContainer = Nothing

' Enumerate and refresh all the frames
Do While pEnumerator.Next(1, pUnk) = 0

On Error Resume Next

' Clear errors
Err.Clear

' Get the IWebBrowser2 interface
Set pBrowser = pUnk

If Err.Number = 0 Then
Debug.Print "Frame: " & pBrowser.LocationURL
End If

Loop

Set pEnumerator = Nothing

End If

End Sub


=======================================================================================

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