EnumMonitorsDelegate lpfnEnum, IntPtr dwData);

Private Shared Function EnumDisplayMonitors(ByVal hdc As IntPtr, ByVal lprcClip As IntPtr, ByVal lpfnEnum As EnumMonitorsDelegate, ByVal dwData As IntPtr) As Boolean

private void EnumMonitors()

public static extern bool EnumMonitors(string pName, uint level, IntPtr pMonitors, uint cbBuf, ref uint pcbNeeded, ref uint pcReturned);

Declare Function EnumMonitors Lib "winspool.dll" (TODO) As TODO

        if (EnumMonitors(null, 2, IntPtr.Zero, 0, ref pcbNeeded, ref pcReturned))

        throw new Exception("EnumMonitors should fail!");

        if (EnumMonitors(null, 2, pMonitors, pcbNeeded, ref pcbNeeded, ref pcReturned))