[DllImport("pci7508.dll"]
public static extern IntPtr pci7508check(uint uiVendorID,uint uiDeviceID,bool fUseInt,long cardNO);
(如果你的ByVal dwVendorID%, ByVal dwDeviceID%都是DWORD的话)
public static extern IntPtr pci7508check(uint uiVendorID,uint uiDeviceID,bool fUseInt,long cardNO);
(如果你的ByVal dwVendorID%, ByVal dwDeviceID%都是DWORD的话)
public static extern IntPtr pci7508check(short uiVendorID,short uiDeviceID,bool fUseInt,short cardNO);VB里面%结尾的是16位整数