Interaction between PowerBuilder and embedded browsers

Preparations
1. Add an application and a new window.
2. Add an ole control in the window: Microsoft Web browser, named old_1.
3. added a textbox URL input control named sle_url and its initial value is C: \ temp \ index.html.
4. added a button control named cb_go and clicked.CodeAs follows:

 
Ole_1.object.navigate (sle_url.text)
 

5. added the file c: \ temp \ index.html with the following content:

 <  Script  Language  = "JavaScript"  >  Function  Sayhello (MSG) {alert (MSG );} </  Script  >  This is a PowerBuilder test page.  <  BR  />  Your name:  <  Span  ID  = "User_name"  > Ultra Man </  Span  > < BR  />  <  A  ID  = "Say_hello"  Onclick  = "Javascript: sayhello ('I am Web browser ');"  > Say hello </  A  > <  BR  />  <  A ID  = "Www_link"  Href  = "Http: // 192.168.14.155"  > Http: // 192.168.14.155 </  A  > <  BR  /> 

 

How does Pb call scripts on a webpage?
1. Add a new button in the window: invoke Javascript. The Code is as follows:

 
Ole_1.object.document.parent##sayhello ("1122 ")
 

2. Pay attention to the Case sensitivity issue. Javascript is case-sensitive and Pb is case-insensitive. When PB is called, all functions are converted to lowercase letters. Assume that the function in JS is sayhello (), and the Pb call method should also be sayhello () in principle, but Pb is actually converted to all lower case sayhello () during execution (), in this way, JS cannot find the sayhello () function during actual execution. Therefore, to call all JS functions in Pb, Use lowercase as the function name.

How does Pb obtain webpage elements?
1. Add a new button in the window: Fetch user name. The Code is as follows:

 
MessageBox ('', string (ole_1.object.document.getelementbyid (" user_name "). innertext ))
 

 

How does Pb modify the attributes of webpage elements?
1. Add a button in the window: Change User name. The Code is as follows:

 
Ole_1.object.document.getelementbyid ("user_name"). innertext = 'super man'
 

 

How does Pb call webpage element events?
1. Add a button in the window: Click link. The Code is as follows:

 
Ole_1.object.document.getelementbyid ("say_hello"). Click ()
 

 

How does Pb respond to click events on a webpage?
1. Write the following code in the clicked event of ole_1:

 
String ls_tagname, ls_id, ls_hrefls_tagname1_ole_1.object.doc ument. activeelement. tagnameif upper (TRIM (ls_tagname) = "A" then ls_id = ole_1.object.document.activeelement.id ls_href = inclumessagebox ('', ls_tagname + '/' + ls_id + '/' + ls_href) ole_1.object.navigate (ls_href) end if
 

2. When you click a link on a webpage, event processing will be passed to ole_1.clicked.

References:
1.Http://hi.baidu.com/starvv_w/blog/item/6264f7a23fef60b9caefd067.html
2.Http://apps.hi.baidu.com/share/detail/2832257