private DialogResult ShowDialogInternal(ref BrowseInfo bi)
{
bi.title = title;
bi.displayname = new string('\0', 260);
bi.callback = BrowseCallback;
bi.flags = (int)BrowseFlags;
//Free any old pidls
if (pidlReturned != IntPtr.Zero)
{
NativeMethods.SHMemFree(pidlReturned);
}
var ret = (pidlReturned = NativeMethods.SHBrowseForFolder(ref bi)) != IntPtr.Zero;
if (ret)
{
FolderDisplayName = bi.displayname;
}
//Reset the handle
handle = IntPtr.Zero;
return(ret ? DialogResult.OK : DialogResult.Cancel);
}
/// <summary>
/// Shows the dialog
/// </summary>
/// <param name="owner">The window to use as the owner</param>
/// <returns></returns>
public DialogResult ShowDialog(IWin32Window owner)
{
if (handle != IntPtr.Zero)
{
throw new InvalidOperationException();
}
var bi = new BrowseInfo();
if (owner != null)
{
bi.hwndOwner = owner.Handle;
}
return(ShowDialogInternal(ref bi));
}
internal static extern IntPtr SHBrowseForFolder(ref BrowseInfo bi);