private DialogResult ShowVistaDialog(IWin32Window owner)
{
var frm = (NativeMethods.IFileDialog)(new NativeMethods.FileOpenDialogRCW());
uint options;
frm.GetOptions(out options);
options |= NativeMethods.FOS_PICKFOLDERS | NativeMethods.FOS_FORCEFILESYSTEM | NativeMethods.FOS_NOVALIDATE | NativeMethods.FOS_NOTESTFILECREATE | NativeMethods.FOS_DONTADDTORECENT;
frm.SetOptions(options);
if (InitialFolder != null)
{
NativeMethods.IShellItem directoryShellItem;
var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
if (NativeMethods.SHCreateItemFromParsingName(InitialFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK)
{
frm.SetFolder(directoryShellItem);
}
}
if (DefaultFolder != null)
{
NativeMethods.IShellItem directoryShellItem;
var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
if (NativeMethods.SHCreateItemFromParsingName(DefaultFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK)
{
frm.SetDefaultFolder(directoryShellItem);
}
}
if (frm.Show(owner.Handle) == NativeMethods.S_OK)
{
NativeMethods.IShellItem shellItem;
if (frm.GetResult(out shellItem) == NativeMethods.S_OK)
{
IntPtr pszString;
if (shellItem.GetDisplayName(NativeMethods.SIGDN_FILESYSPATH, out pszString) == NativeMethods.S_OK)
{
if (pszString != IntPtr.Zero)
{
try
{
Folder = Marshal.PtrToStringAuto(pszString);
return(DialogResult.OK);
}
finally
{
Marshal.FreeCoTaskMem(pszString);
}
}
}
}
}
return(DialogResult.Cancel);
}