solidworks二次开发

wxp510288

各位大侠：
  我要用VB编写程序打开SOLIDWORKS零部件，程序如下：
Option Explicit
Const filedir As String = "F:\solidworks\"
Dim WithEvents swapp As SldWorks.SldWorks
Dim WithEvents swmodel As SldWorks.ModelView
Private Sub cmdSldworks_Click()
  Set swapp = CreateObject("SldWorks.Application")
      If chkOpen.Value = True Then
    Dim fileerror As Long
    Dim filewarning As Long
        swapp.OpenDoc6 filedir + TextBox1.Text, _
          swDocPART, swOpenDocOptions_Silent, _
          "", fileerror, filewarning
      End If
End Sub
但是无法打开，不知道为什么。哪为给指点指点，在线急等！！！！

slayerran

Zguy