wxDirDialog Returns the Wrong Directory on Vista - visual-c++

Question

I recently ported the following code to wx3.0 under visual studio 2013:
void PanelFileControl::on_retrieve_clicked(wxCommandEvent &event)
{
if(!chosen_files.empty())
{
Csi::ModalCounter counter;
wxDirDialog query(
this,
make_wxString(my_strings[strid_choose_retrieve_dir]),
make_wxString(wxGetApp().get_config()->get_last_prog_dir()));
int rcd;
query.CentreOnParent();
rcd = query.ShowModal();
if(rcd == wxID_OK)
{
// we need to generate an operation for every selected file.
StrAsc path(make_StrAsc(query.GetPath()));
DlgFileControl::operations_type operations;
if(path.last() != Csi::FileSystemObject::dir_separator())
path.append(Csi::FileSystemObject::dir_separator());
for(files_type::iterator fi = chosen_files.begin(); fi != chosen_files.end(); ++fi)
{
file_type const &file(*fi);
StrAsc file_path(path + file.get_file_name());
bool use_file(true);
if(Csi::file_exists(file_path.c_str()))
{
OwxStringStream message;
message << boost::format(my_strings[strid_overwrite_file_confirm].c_str()) %
file_path;
wxMessageDialog overwrite_query(
this,
message.str(),
wxT(""),
wxYES_NO | wxNO_DEFAULT | wxICON_QUESTION);
int rcd;
overwrite_query.CentreOnParent();
rcd = overwrite_query.ShowModal();
if(rcd != wxID_YES)
use_file = false;
}
if(use_file)
operations.push_back(new ReceiveFileOperation(file, file_path));
}
// we can now display the operation dialogue
if(!operations.empty())
{
DlgFileControl dialogue(this, device_name, operations);
dialogue.show_modal();
}
}
}
} // on_retrieve_clicked
Following this change (which didn't require any changes to the code above), I have received complaints that, if the user selects the desktop and then double clicks on a directory on the desktop, that the file save operation fails. This appears to be a result of the path produced by the wxDirDialog::GetPath() and has only been seen under windows vista. I have followed up some testing and I find that, under Vista, the last path component is mentioned twice in the string returned by GetPath().
Has anyone seen this issue? Are there any work arounds?

Answer 1

I found that I can address the issue by preventing the wxDirDialog from using the IFILEDIALOG interface from being used. My ShowModal() method now looks like this:
int wxDirDialog::ShowModal()
{
WX_HOOK_MODAL_DIALOG();
wxWindow* const parent = GetParent();
WXHWND hWndParent = parent ? GetHwndOf(parent) : NULL;
// Use IFileDialog under new enough Windows, it's more user-friendly.
int rc;
#if wxUSE_IFILEDIALOG
if ( wxGetWinVersion() > wxWinVersion_Vista )
{
rc = ShowIFileDialog(hWndParent);
}
else
{
rc = wxID_NONE;
}
if ( rc == wxID_NONE )
#endif // wxUSE_IFILEDIALOG
{
rc = ShowSHBrowseForFolder(hWndParent);
}
// change current working directory if asked so
if ( rc == wxID_OK && HasFlag(wxDD_CHANGE_DIR) )
wxSetWorkingDirectory(m_path);
return rc;
}