Modernize folderdialog? about pywebview HOT 4 OPEN

import threading

import clr

clr.AddReference('System.Windows.Forms')
clr.AddReference('System.Threading')
clr.AddReference('System.Reflection')

import System.Windows.Forms as WinForms

from System.Threading import ApartmentState, Thread, ThreadStart

from System.Reflection import Assembly, BindingFlags
from System import UInt32


class VistaDialog:
    foldersFilter = "Folders|\n"
    flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic
    windowsFormsAssembly = Assembly.LoadWithPartialName("System.Windows.Forms")
    iFileDialogType = windowsFormsAssembly.GetType("System.Windows.Forms.FileDialogNative+IFileDialog")
    OpenFileDialogType = windowsFormsAssembly.GetType("System.Windows.Forms.OpenFileDialog")
    FileDialogType = windowsFormsAssembly.GetType("System.Windows.Forms.FileDialog")
    createVistaDialogMethodInfo = OpenFileDialogType.GetMethod("CreateVistaDialog", flags)
    onBeforeVistaDialogMethodInfo = OpenFileDialogType.GetMethod("OnBeforeVistaDialog", flags)
    getOptionsMethodInfo = FileDialogType.GetMethod("GetOptions", flags)
    setOptionsMethodInfo = iFileDialogType.GetMethod("SetOptions", flags)
    fosPickFoldersBitFlag = windowsFormsAssembly.GetType(
        "System.Windows.Forms.FileDialogNative+FOS").GetField("FOS_PICKFOLDERS").GetValue(None)

    vistaDialogEventsConstructorInfo = windowsFormsAssembly.GetType(
        "System.Windows.Forms.FileDialog+VistaDialogEvents").GetConstructor(flags, None, [FileDialogType], [])
    adviseMethodInfo = iFileDialogType.GetMethod("Advise")
    unadviseMethodInfo = iFileDialogType.GetMethod("Unadvise")
    showMethodInfo = iFileDialogType.GetMethod("Show")

    def show(self, initialDirectory=None, title=None):
        openFileDialog = WinForms.OpenFileDialog()
        openFileDialog.InitialDirectory = initialDirectory
        openFileDialog.Title = title
        openFileDialog.Filter = self.foldersFilter
        openFileDialog.AddExtension = False
        openFileDialog.CheckFileExists = False
        openFileDialog.DereferenceLinks = True
        openFileDialog.Multiselect = False

        iFileDialog = VistaDialog.createVistaDialogMethodInfo.Invoke(openFileDialog, [])
        VistaDialog.onBeforeVistaDialogMethodInfo.Invoke(openFileDialog, [iFileDialog])
        options = VistaDialog.getOptionsMethodInfo.Invoke(openFileDialog, [])
        options = options.op_BitwiseOr(VistaDialog.fosPickFoldersBitFlag)
        VistaDialog.setOptionsMethodInfo.Invoke(iFileDialog, [options])

        adviseParametersWithOutputConnectionToken = [
            VistaDialog.vistaDialogEventsConstructorInfo.Invoke([openFileDialog]),
            UInt32(0),
        ]
        VistaDialog.adviseMethodInfo.Invoke(iFileDialog, adviseParametersWithOutputConnectionToken)
        result = VistaDialog.showMethodInfo.Invoke(iFileDialog, [None])
        if result == 0:
            return openFileDialog.FileName

        # Unable to unadvise because dwCookie is not updated
        # VistaDialog.unadviseMethodInfo.Invoke(iFileDialog, [adviseParametersWithOutputConnectionToken[1]])
        return ""


def show():
    d = VistaDialog()
    res = d.show()
    print(res)


def create():
    w = WinForms.Form()
    w.Title = "Displaying"

    threading.Thread(target=show).start()
    WinForms.Application().Run(w)


thread = Thread(ThreadStart(create))
thread.SetApartmentState(ApartmentState.STA)
thread.Start()
thread.Join()