SHBrowseForFolder

The function "SHBrowseForFolder" does not allow to specify the current (default) folder directly, so we need to send "BFFM_SETSELECTION" using the callback function. The folder is specified in the BROWSEINFO lparam.

Sample Sourcecode:

// callback function
INT CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
{
    if (uMsg==BFFM_INITIALIZED) SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);
    return 0;
}

// browseforfolder function
// returns the folder or an empty string if no folder was selected
// hwnd = handle to parent window
// title = text in dialog
// folder = selected (default) folder
CString BrowseForFolder(HWND hwnd, CString title, CString folder)
{
    CString ret;

    BROWSEINFO br;
    ZeroMemory(&br, sizeof(BROWSEINFO));
    br.lpfn = BrowseCallbackProc;
    br.ulFlags = BIF_RETURNONLYFSDIRS | BIF_NEWDIALOGSTYLE;
    br.hwndOwner = hwnd;
    br.lpszTitle = title;
    br.lParam = (LPARAM)folder.GetString();

    LPITEMIDLIST pidl = NULL;
    if ((pidl = SHBrowseForFolder(&br)) != NULL)
    {
        wchar_t buffer[MAX_PATH];
        if (SHGetPathFromIDList(pidl, buffer)) ret = buffer;
    }

    return ret;
}

// sample function call
CString folder = BrowseForFolder (this->m_hWnd, L"Select Folder", L"C:\\");