BROWSEINFO BIF_SHAREABLE flag problem using SHBrowseForFolder

EDN Admin · Aug 16, 2007

Hello all,

I am new to these forums so I hope I have chosen the right place to post this. I am using C++ so this seems like the right place although maybe platform SDK is the right place. Sorry if this is not right.

Anyway, I am using the SHBrowseForFolder function to allow a user to select a folder to output data to and I have come across a problem using the BIF_SHAREABLE flag which I set in the BROWSEINFO structure which is a passed into the SHBrowseForFolder function . According to the documentation here <a title="http://msdn2.microsoft.com/en-us/library/ms538017.aspx http://msdn2.microsoft.com/en-us/library/ms538017.aspx http://msdn2.microsoft.com/en-us/library/ms538017.aspx setting this flag will allow the browse dialog box to display shareable resources on remote systems. However, in the testing I have done this flag seems to work the opposite way that it is supposed to according to how I interpreted the documentation.

On some of my test machines (Windows XP Pro and Home which both have Version 5 or 6 of the DLL called) I have network drives mapped to drive letters and if they are disconnected then with the BIF_SHAREABLE flag set they will show up in the browse list but if they are connected then they do not show up anymore . If I dont set the BIF_SHAREABLE flag then all of the mapped drives end up showing up which seems like the opposite behavior I would expect.

Here is a portion of the code that is relevant in case it will help: 

<div class=codeseg>
<div class=codecontent>
<div class=codesniptitle>
 BROWSEINFO bi;
LPITEMIDLIST pidlBrowse; // PIDL selected by user
LPMALLOC pMalloc;
tstr titlestr = GetResourceStr(title);
TCHAR pathwork[_MAX_PATH];

 int version = GetDLLVersion(_T("SHELL32.DLL"));
SHGetMalloc(&pMalloc);
 memset(&bi,0,sizeof bi);
bi.hwndOwner = hDlg;
bi.pidlRoot = NULL;
bi.pszDisplayName = pathwork;
bi.lpszTitle = titlestr.c_str(); 

bi.ulFlags = BIF_RETURNONLYFSDIRS;
if (version >= 0x50000)
bi.ulFlags |= BIF_NEWDIALOGSTYLE | BIF_SHAREABLE; 

 bi.lpfn = BrowseCallbackProc;
bi.lParam = (long)pathwork;

 // Browse for a folder and return its PIDL.
pidlBrowse = SHBrowseForFolder(&bi);

 




For now I have just commented out the BIF_SHAREABLE flag which gives me the behavior I want and expect but I would like to understand why the function is acting this way. I am just overlooking something simple?

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BROWSEINFO BIF_SHAREABLE flag problem using SHBrowseForFolder

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