CFileDialog :: Browse folders

Question

When I try to instantiate a CFileDialog object it shows both the folders and files. How do you create a CFileDialog that browses for folders alone?

Answer 1

Seems to me the answer you are asking for is inside the code of

CMFCPropertyGridFileProperty::OnClickButton(CPoint /*point*/)

of the

\VC\atlmfc\src\mfc\afxpropertygridctrl.cpp

file.

If you do not have access to the code, I will post the essential part of it:

CString strPath = m_varValue.bstrVal;
BOOL bUpdate = FALSE;

if (m_bIsFolder)
{
    if (afxShellManager == NULL)
    {
        CWinAppEx* pApp = DYNAMIC_DOWNCAST(CWinAppEx, AfxGetApp());
        if (pApp != NULL)
        {
            pApp->InitShellManager();
        }
    }

    if (afxShellManager == NULL)
    {
        ASSERT(FALSE);
    }
    else
    {
        bUpdate = afxShellManager->BrowseForFolder(strPath, m_pWndList, strPath);
    }
}
else
{
    CFileDialog dlg(m_bOpenFileDialog, m_strDefExt, strPath, m_dwFileOpenFlags, m_strFilter, m_pWndList);
    if (dlg.DoModal() == IDOK)
    {
        bUpdate = TRUE;
        strPath = dlg.GetPathName();
    }
}

As you see, Microsoft itself does not use the Cfiledialog class when wants to open a dialog for picking folders.

For using code like that, your application class MUST be derived from CWinAppEx, not CWinApp