CWebBrowser2 ctrl provide two method to link a web page:
Navigate2(VARIANT* URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers)
Navigate(LPCTSTR URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers)
My requirement is very simple, give a link: such as www.sina.com, navigate to web page.
At first, I use method Navigate because it is easy to use.
But sometimes I find that it get a error page while I can link the web page with other browser.
After a long time research, I can not find a good solution, then I found the method Navigate2. I wrote a method to rope it as follow:
Compare the implements:
I find that they invoked different? dwDispID ? of? InvokeHelper , get the explain from MSDN:
Who can tell me what's the differents of
0x1f4 between
0x68?
Navigate2(VARIANT* URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers)
Navigate(LPCTSTR URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers)
My requirement is very simple, give a link: such as www.sina.com, navigate to web page.
At first, I use method Navigate because it is easy to use.
But sometimes I find that it get a error page while I can link the web page with other browser.
After a long time research, I can not find a good solution, then I found the method Navigate2. I wrote a method to rope it as follow:
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->
?1
?
void
?Navigate2(CString?szHtmlUrl)
?2 ? {
?3 ? ???? try
?4 ? ????{
?5 ? ????????VARIANT?vFlags? = ?{VT_I4,?navNoReadFromCache};
?6 ? ????????VARIANT?vUrl;?
?7 ? ????????VariantInit( & vUrl);
?8 ? ????????BSTR?bstrUrl? = ?szHtmlUrl.AllocSysString();
?9 ? ????????vUrl.vt? = ?VT_BSTR;
10 ? ????????vUrl.bstrVal? = ?bstrUrl;
11 ? ????????m_web.Navigate2( & vUrl,? & vFlags,?NULL,?NULL,?NULL); // ?refresh?top?browser's?content
12 ? ????????g_Logger.Add(LOGLEVEL_FYI,?_T( " Navigate2TopBanner,?Top?link?Url:?%s " ),?szHtmlUrl);
13 ? ????????::SysFreeString(bstrUrl);
14 ? ????}
15 ? ???? catch (
){}
16 ? }
It works well....
?2 ? {
?3 ? ???? try
?4 ? ????{
?5 ? ????????VARIANT?vFlags? = ?{VT_I4,?navNoReadFromCache};
?6 ? ????????VARIANT?vUrl;?
?7 ? ????????VariantInit( & vUrl);
?8 ? ????????BSTR?bstrUrl? = ?szHtmlUrl.AllocSysString();
?9 ? ????????vUrl.vt? = ?VT_BSTR;
10 ? ????????vUrl.bstrVal? = ?bstrUrl;
11 ? ????????m_web.Navigate2( & vUrl,? & vFlags,?NULL,?NULL,?NULL); // ?refresh?top?browser's?content
12 ? ????????g_Logger.Add(LOGLEVEL_FYI,?_T( " Navigate2TopBanner,?Top?link?Url:?%s " ),?szHtmlUrl);
13 ? ????????::SysFreeString(bstrUrl);
14 ? ????}
15 ? ???? catch (
){}
16 ? }
Compare the implements:
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->
1
?
void
?CWebBrowser2::Navigate(LPCTSTR?URL,?VARIANT
*
?Flags,?VARIANT
*
?TargetFrameName,?VARIANT
*
?PostData,?VARIANT
*
?Headers)
2 ? {
3 ? ???? static ?BYTE?parms[]? =
4 ? ????????VTS_BSTR?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT;
5 ? ????InvokeHelper( 0x68 ,?DISPATCH_METHOD,?VT_EMPTY,?NULL,?parms,
6 ? ?????????URL,?Flags,?TargetFrameName,?PostData,?Headers);
7 ? }
2 ? {
3 ? ???? static ?BYTE?parms[]? =
4 ? ????????VTS_BSTR?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT;
5 ? ????InvokeHelper( 0x68 ,?DISPATCH_METHOD,?VT_EMPTY,?NULL,?parms,
6 ? ?????????URL,?Flags,?TargetFrameName,?PostData,?Headers);
7 ? }
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->
1
?
void
?CWebBrowser2::Navigate2(VARIANT
*
?URL,?VARIANT
*
?Flags,?VARIANT
*
?TargetFrameName,?VARIANT
*
?PostData,?VARIANT
*
?Headers)
2 ? {
3 ? ???? static ?BYTE?parms[]? =
4 ? ????????VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT;
5 ? ????InvokeHelper( 0x1f4 ,?DISPATCH_METHOD,?VT_EMPTY,?NULL,?parms,
6 ? ?????????URL,?Flags,?TargetFrameName,?PostData,?Headers);
7 ? }
2 ? {
3 ? ???? static ?BYTE?parms[]? =
4 ? ????????VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT?VTS_PVARIANT;
5 ? ????InvokeHelper( 0x1f4 ,?DISPATCH_METHOD,?VT_EMPTY,?NULL,?parms,
6 ? ?????????URL,?Flags,?TargetFrameName,?PostData,?Headers);
7 ? }
I find that they invoked different? dwDispID ? of? InvokeHelper , get the explain from MSDN:
Parameters
dwDispID
Identifies the method or property to be invoked.
Identifies the method or property to be invoked.
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