Функция выбора файла сохранения для VBA через WinAPI

Данный пример иллюстрирует тест выбора файла типа *.html.
Код:

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Private Type OPENFILENAME
lStructSize As Long
hwndOwner As Long
hInstance As Long
lpstrFilter As String
lpstrCustomFilter As String
nMaxCustFilter As Long
nFilterIndex As Long
lpstrFile As String
nMaxFile As Long
lpstrFileTitle As String
nMaxFileTitle As Long
lpstrInitialDir As String
lpstrTitle As String
flags As Long
nFileOffset As Integer
nFileExtension As Integer
lpstrDefExt As String
lCustData As Long
lpfnHook As Long
lpTemplateName As String
End Type

Private Declare Function GetSaveFileName Lib "comdlg32.dll" Alias "GetSaveFileNameA" (pOpenfilename As OPENFILENAME) As Long

Dim OFName As OPENFILENAME

Private Function ShowSave() As String
OFName.lStructSize = Len(OFName)
OFName.hwndOwner = Hwnd

OFName.lpstrFilter = "html (*.html)" + Chr$(0) + "*.html" + Chr$(0)
OFName.lpstrFile = Space$(254)
OFName.nMaxFile = 255
OFName.lpstrFileTitle = Space$(254)
OFName.nMaxFileTitle = 255
OFName.lpstrInitialDir = "C:\"
OFName.lpstrTitle = ""
OFName.flags = 0
If GetSaveFileName(OFName) Then
ShowSave = Trim$(OFName.lpstrFile)
Else
ShowSave = ""
End If
End Function

В данном случае выбираются файлы по фильтру *.html.
Описание функции GetSaveFileName.
Описание структуры OPENFILENAME.