问题描述 VB与西门子s7-300通讯,提示w95_s7.dll未找到 我想使用VB与西门子s7-300通讯,使用了w95_s7.dll动态链接库.其代码如下: 在公共模块里: Option Explicit Public Declare Function load_tool Lib "w95_s7.dll" (ByVal nr As Byte, ByVal dev As String, adr As PlcAdrType) As Long Public Declare Functio
'Form1 窗体Dim userID As StringDim mobileNo As StringDim checkRnd As StringDim longin As BooleanDim checkRndBox As StringPublic fileno As VariantDim ys As IntegerDim su As LongDim sum As LongDim pas As String Private Sub Check2_Click()On Error GoTo err