Компоненты (диалоги)

Option Explicit
 
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 GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
 
Private Sub Command1_Click()
    Dim ofn As OPENFILENAME
    ofn.lStructSize = Len(ofn)
    ofn.hwndOwner = Application.Hwnd
    ofn.hInstance = Application.hInstance
    ofn.lpstrFilter = "Text Files (*.txt)" + Chr$(0) + "*.txt" + Chr$(0) + "Rich Text Files (*.rtf)" + Chr$(0) + "*.rtf" + Chr$(0)
    ofn.lpstrFile = Space$(254)
    ofn.nMaxFile = 255
    ofn.lpstrFileTitle = Space$(254)
    ofn.nMaxFileTitle = 255
    ofn.lpstrInitialDir = CurDir
    ofn.lpstrTitle = "Our File Open Title"
    ofn.flags = 0
    Dim a
    a = GetOpenFileName(ofn)
    
    If (a) Then
        MsgBox "File to Open: " + Trim$(ofn.lpstrFile)
    Else
        MsgBox "Cancel was pressed"
    End If
End Sub

    ofn.hwndOwner = 0
    ofn.hInstance = 0