Solved

How to set "Selected" status of a radio in WebBrowser2 Ctrl?

Posted on 2001-08-10
2
323 Views
Last Modified: 2013-11-20
Hi experts:
    I want to set a HTML radio to the status of selected, the html code is here:
    <input type="radio" name="myradio" value="Value1">Radio Box Value1
    <input type="radio" name="myradio" value="value2">Radio Box Value1

You can see that the two radio is unselected. I want to press a button in my program and select the radio which value="value2".
Please note:
1 They have same name because they are in one group.
2 I can set the *value* of text input box, but the "selected" status is not the value of radio. When a radio is selected, the html code will be:
    <input type="radio" name="myradio" value="Value1" selected>
3 I also want to know how to check/uncheck a check box in WebBrowser2 ctrl.

The following can set value of text input box of CWebBrowser2 m_web;

    IHTMLElementCollection *objAllElement=NULL;
    IHTMLDocument2 *objDocument=NULL;
    CComPtr<IDispatch>pDisp;
    IHTMLAnchorElement *objAnchor=NULL;
    CString strUrl;
    strUrl=m_ctrlWeb.GetLocationURL();
    if(strUrl.IsEmpty())
        return;
    objDocument=(IHTMLDocument2 *)m_ctrlWeb.GetDocument();
    objDocument->get_all(&objAllElement);
    objAllElement->item(COleVariant("Name of Textbox"),COleVariant((long)0),&pDisp);
    CComQIPtr<IHTMLInputTextElement, &IID_IHTMLInputTextElement>pElement;
    //If it is a radio box , then use IHTMLOptionButtonEelment here
    pElement=pDisp;
    pElement->put_value(CString("Value of Textbox").AllocSysString());
0
Comment
Question by:Feya
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 49

Accepted Solution

by:
DanRollins earned 100 total points
ID: 6375205
I think that by 'select' you want to 'put a dot into' (that is make it the selected option).  One must use the set_checked() member of IHTMLOptionButtonElement in order to do this.

<Input type=radio value='1' name='MyRadioBtn' CHECKED>Opt1 description<br>
<Input type=radio value='2' name='MyRadioBtn'>Opt2 description<br>
<Input type=radio value='3' name='MyRadioBtn'>Opt3 description<br>

When you use objAllElement->item(...) you will get back a collection of all radio btns with that name UNLESS you specify an index as the second parameter.  To wit:

#include <Mshtml.h>
#include <atlbase.h>

void CMyDlg::OnButton1()
{
    IHTMLElementCollection *objAllElement=NULL;
    IHTMLDocument2 *objDocument=NULL;
    CComPtr<IDispatch>pDisp;

    objDocument=(IHTMLDocument2 *)m_ctlBrowser.GetDocument();
    objDocument->get_all(&objAllElement);

    COleVariant vBtnIdx((long)2); // actually the third button (0 is first)
    objAllElement->item(COleVariant("MyRadioBtn"),vBtnIdx,&pDisp); // <<< the key

    CComQIPtr<IHTMLOptionButtonElement, &IID_IHTMLOptionButtonElement>pElement;
    pElement=pDisp; // need error checking here
    pElement->put_checked(true);
}
=-=-=-=-=-=-=-
Use the same logic with checkboxes, but use the IHTMLInputElement interface.

You could also use the id='Opt1' syntax to give each radio button a unique ID, then you can access each one individually without needing to specify an index.

-- Dan
0
 

Author Comment

by:Feya
ID: 6375251
Excellent Answer!
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question