CWebControl PostData

Posted on 1998-07-28
Medium Priority
Last Modified: 2013-11-20
I'm using the following code in a VC++5.0(no patches applied), IE4.01
configuration and postData is not working.  The web browser control
navigates to the url I give it, but it's method is GET and it doesn't send
my postData.  When PostData is not NULL it's supposed to send a
request method of POST and send the data.

Also I sent a breakpoint in BeforeNavigate2() and read the PostData string
it's empty!

Here is the code snippet from my app.

void CMyView::SetNavigationLocation(CString url, CString postData)
    //    url = "http://www.ecst.csuchico.edu/~jschlich/Flyfish/fishinfotest.cgi";
   //    postData = "userid=tim_z&pass=dont_you_wish";

    CString header;
    // Content-Type: application/x-www-form-urlencoded\r\n

    COleVariant oleVariant;
    COleVariant urlOleVariant( url );
    COleVariant dataOleVariant( postData );
    COleVariant headerOleVariant( header );

    m_WebBrowser.Navigate2(&urlOleVariant, &oleVariant, &oleVariant, &dataOleVariant, &headerOleVariant);

This problem has got me at a complete stand still.  If anyone can help, I will be very
very grateful and acknowledge you as the MFC WebBrowser guru!

Question by:NotJeff
LVL 23

Accepted Solution

chensu earned 840 total points
ID: 1319866
The post data specified by PostData is passed as a SAFEARRAY structure. The variant should be of type VT_ARRAY and point to a SAFEARRAY. The SAFEARRAY should be of element type VT_UI1, dimension one, and have an element count equal to the number of bytes of post data. Instead of

COleVariant dataOleVariant(postData);

do the following,

COleSafeArray saPostData;
if (!postData.IsEmpty())
    saPostData.CreateOneDim(VT_UI1, postData.GetLength(), (LPCTSTR)postData);

Author Comment

ID: 1319867
I hereby hail chensu as the web control master!  And at the same time I'd like to poop on Microsofts documentation of this function.  Everything works great now!  Send me an email at the root url in my sample and I'll buy you lunch.  Thanks  NotJeff

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