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