CODEWITHSUNDEEP
c#winapishelllocalizationglobalization
user1787509
user1787509

Reputation:

How to get the localized special folder name?

I use SHGetFileInfo() or GetDisplayNameOf() to get the name of a special folder.

If a localized operating system to change the setting "Current language for non-Unicode programs", these functions return a value "??? ?????????".

This combination of settings encountered by users.

shell32 is not fully unicode compatible?

Shell32.STRRET STRRET;
STRRET.uType = (uint)Shell32.STRRET_TYPE.STRRET_WSTR;
if (Windows.S_OK != ishellfolder_parent.GetDisplayNameOf(ptr_pidllast, (uint)Shell32.SHGNO.SHGDN_NORMAL | (uint)Shell32.SHGNO.SHGDN_INFOLDER, out STRRET))
                return null;

StringBuilder sbuilder = new StringBuilder(260);
Shell32.StrRetToBuf(ref STRRET, ptr_pidllast, sbuilder, (uint)sbuilder.Capacity);

what is wrong?

***added later Another example to demonstrate my question:

public static partial class Program
{
    const Int32 CSIDL_DESKTOP = (0x0000);
    const uint SHGFI_DISPLAYNAME = 0x000000200;     // get display name
    const uint SHGFI_PIDL = 0x000000008;     // pszPath is a pidl

    [StructLayout(LayoutKind.Sequential)]
    public struct SHFILEINFO
    {
        public static int NAMESIZE = 80;
        public IntPtr hIcon;
        public int iIcon;
        public uint dwAttributes;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
        public string szDisplayName;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
        public string szTypeName;
    };

    [DllImport("shell32.dll")]
    static extern IntPtr SHGetFileInfo(IntPtr pidl, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags);
    [DllImport("shell32.dll")]
    public static extern IntPtr SHCloneSpecialIDList(IntPtr hwnd, Int32 CSIDL, bool create);


    [STAThread]
    static void Main(string[] args)
    {
        IntPtr pidl = SHCloneSpecialIDList(IntPtr.Zero, CSIDL_DESKTOP, false);
        SHFILEINFO shfi = new SHFILEINFO();
        if (IntPtr.Zero != SHGetFileInfo(
                    pidl,
                    0,
                    ref shfi,
                    (uint)Marshal.SizeOf(typeof(SHFILEINFO)),
                    SHGFI_PIDL | SHGFI_DISPLAYNAME))
        {
            System.Windows.Forms.MessageBox.Show(shfi.szDisplayName);
        }

This code not correct. Some cases wrong return values, described above. Can anyone help me with an example of the correct code, fully compatible with Unicode and works with non-default system settings?

Thank you all! After some experiments, and found a solution. My error was here:

Shell32.StrRetToBuf(ref STRRET, ptr_pidllast, sbuilder, (uint)sbuilder.Capacity);

The signature should be:

[DllImport("shlwapi.dll", CharSet=CharSet.Unicode, EntryPoint="StrRetToBufW")]
public static extern Int32 StrRetToBufW( ...

Upvotes: 3

Views: 1573

Answers (1)

AbdElRaheim
AbdElRaheim

Reputation: 1394

Someone asked the same question. You can use the code example there.

How to get the actual (localized) folder names?

Upvotes: 1

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