private bool RunDialogDownlevel(IntPtr owner)
{
IntPtr rootItemIdList = IntPtr.Zero;
IntPtr resultItemIdList = IntPtr.Zero;
if (NativeMethods.SHGetSpecialFolderLocation(owner, RootFolder, ref rootItemIdList) != 0)
{
if (NativeMethods.SHGetSpecialFolderLocation(owner, 0, ref rootItemIdList) != 0)
{
throw new InvalidOperationException("Unable to retrieve the root folder.");
}
}
try
{
NativeMethods.BROWSEINFO info = new NativeMethods.BROWSEINFO
{
hwndOwner = owner,
lpfn = new NativeMethods.BrowseCallbackProc(BrowseCallbackProc),
lpszTitle = Description,
pidlRoot = rootItemIdList,
pszDisplayName = new string('\0', 260),
ulFlags = NativeMethods.BrowseInfoFlags.NewDialogStyle | NativeMethods.BrowseInfoFlags.ReturnOnlyFsDirs
};
if (!ShowNewFolderButton)
{
info.ulFlags |= NativeMethods.BrowseInfoFlags.NoNewFolderButton;
}
resultItemIdList = NativeMethods.SHBrowseForFolder(ref info);
if (resultItemIdList != IntPtr.Zero)
{
StringBuilder path = new StringBuilder(260);
NativeMethods.SHGetPathFromIDList(resultItemIdList, path);
SelectedPath = path.ToString();
return(true);
}
else
{
return(false);
}
}
finally
{
if (rootItemIdList != null)
{
IMalloc malloc = NativeMethods.SHGetMalloc();
malloc.Free(rootItemIdList);
Marshal.ReleaseComObject(malloc);
}
if (resultItemIdList != null)
{
Marshal.FreeCoTaskMem(resultItemIdList);
}
}
}
private bool RunDialogDownlevel(IntPtr owner)
{
IntPtr rootItemIdList = IntPtr.Zero;
IntPtr resultItemIdList = IntPtr.Zero;
if( NativeMethods.SHGetSpecialFolderLocation(owner, RootFolder, ref rootItemIdList) != 0 )
{
if( NativeMethods.SHGetSpecialFolderLocation(owner, 0, ref rootItemIdList) != 0 )
{
throw new InvalidOperationException(Properties.Resources.FolderBrowserDialogNoRootFolder);
}
}
try
{
NativeMethods.BROWSEINFO info = new NativeMethods.BROWSEINFO();
info.hwndOwner = owner;
info.lpfn = new NativeMethods.BrowseCallbackProc(BrowseCallbackProc);
info.lpszTitle = Description;
info.pidlRoot = rootItemIdList;
info.pszDisplayName = new string('\0', 260);
info.ulFlags = NativeMethods.BrowseInfoFlags.NewDialogStyle | NativeMethods.BrowseInfoFlags.ReturnOnlyFsDirs;
if( !ShowNewFolderButton )
info.ulFlags |= NativeMethods.BrowseInfoFlags.NoNewFolderButton;
resultItemIdList = NativeMethods.SHBrowseForFolder(ref info);
if( resultItemIdList != IntPtr.Zero )
{
StringBuilder path = new StringBuilder(260);
NativeMethods.SHGetPathFromIDList(resultItemIdList, path);
SelectedPath = path.ToString();
return true;
}
else
return false;
}
finally
{
if( rootItemIdList != null )
{
IMalloc malloc = NativeMethods.SHGetMalloc();
malloc.Free(rootItemIdList);
Marshal.ReleaseComObject(malloc);
}
if( resultItemIdList != null )
{
Marshal.FreeCoTaskMem(resultItemIdList);
}
}
}
