Handling clicks on buttons in the HTML page - hope this helps:
Given:
<HTML>
<BODY id=B1>
<H1>Test</H1>
<input type="BUTTON" value="Click Me!" id=button1 />
<P id=Test1>Test 1 x</P>
<P id=Test2>Test 2 x</P>
<P id=Test3>Test <B>3</B> x</P>
</BODY>
</HTML>
In Form_Load:
//Handle document complete so that we know when the web page is
available
axWebBrowser1.DocumentComplete += new
DWebBrowserEvents2_DocumentCompleteEventHandler(this.axWebBrowser1_Docum
entComplete);
Now in DocumentComplete:
//When the document is loaded we can work with it
private void axWebBrowser1_DocumentComplete(object sender,
DWebBrowserEvents2_DocumentCompleteEvent e) {
//Get the HTML Document coclass
object document = axWebBrowser1.Document;
if (null == document) return ;
//Get the IHTMLDocument interface
IHTMLDocument2 doc2 = (IHTMLDocument2)document;
//Now create an RCW of the correct type for the co-class -
by default it comes back as
//an __ComObject
//NOTE: This will not be necessary in RTM
HTMLDocument htmlDoc =
(HTMLDocument)Marshal.CreateWrapperOfType(document,typeof(HTMLDocument))
;
//Now we can get the event interface and handle clicks on
the document
//This will handle all click events because everything
bubbles up to
//the document
HTMLDocumentEvents2_Event htmlEvents =
(HTMLDocumentEvents2_Event)htmlDoc;
htmlEvents.onclick += new
HTMLDocumentEvents2_onclickEventHandler(this.Doc_OnClick);
//Get the button in the page
IHTMLInputButtonElement buttonElem =
(IHTMLInputButtonElement)(doc2.all.item("button1",null));
//Get the coclass - have to make sure we get the exact
coclass here or we get an exception
//In our case the coclass is HTMLInputButtonElement
HTMLInputButtonElement htmlElem =
(HTMLInputButtonElement)Marshal.CreateWrapperOfType(buttonElem,typeof(HT
MLInputButtonElement));
//Test that we've got it
MessageBox.Show("VALUE: " + htmlElem.value);
//Now we can get the event interface and handle events on it
HTMLButtonElementEvents_Event buttonEvents =
(HTMLButtonElementEvents_Event)htmlElem;
buttonEvents.onclick += new
HTMLButtonElementEvents_onclickEventHandler(this.Button1_OnClick);
}
private bool Doc_OnClick(MSHTML.IHTMLEventObj evObj) {
string msg = "You Clicked on the HTML Page, we handled it in
managed code.\nYou clicked on ";
MessageBox.Show(msg + evObj.srcElement.tagName + " " +
evObj.srcElement.id);
return true;
}
private bool Button1_OnClick() {
MessageBox.Show("You Clicked on the BUTTON, we handled it in
managed code");
return true;
}
-----Original Message-----
From: Jade Martin [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, June 04, 2002 9:51 AM
To: [EMAIL PROTECTED]
Subject: Re: [DOTNET] Old Unanswer Question: How do you trap hosted IE
events?
I found a really nice tutorial at
http://www.syncfusion.com/FAQ/WinForms/FAQ_c100c.asp#q645q
I now can trap link clicks by using the BeforeNavigate event. Now I just
need to figure out how to trap button clicks.
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