Office VBA用WinAPI实现“另存为”对话框

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

Dim OFName As OPENFILENAME

Private Function ShowSave() As String
    OFName.lStructSize = Len(OFName)
    OFName.hwndOwner = Application.Hwnd
    OFName.lpstrFilter = "X Files (*.x)" + Chr$(0) + "*.x" + Chr$(0) + "XMesh Files (*.xms)" + Chr$(0) + "*.xms" + Chr$(0) + "All Files (*.*)" + Chr$(0) + "*.*" + Chr$(0)
    OFName.lpstrFile = Space$(254)
    OFName.nMaxFile = 255
    OFName.lpstrFileTitle = Space$(254)
    OFName.nMaxFileTitle = 255
    OFName.lpstrInitialDir = "C:/"
    OFName.lpstrTitle = "另存为"
    OFName.flags = 0
    If GetSaveFileName(OFName) Then
        ShowSave = Trim$(OFName.lpstrFile)
    Else
        ShowSave = ""
    End If
End Function

Private Sub btnLoadSkinWeight_Click()
    MsgBox ShowSave
End Sub