Paste this into the form you want to prevent the drag on:
vb.net Code:
Protected Overrides Sub WndProc(ByRef m As Message)
If (m.Msg = &H112) AndAlso (m.WParam.ToInt32() = &HF010) Then
Return
End If
If (m.Msg = &HA1) AndAlso (m.WParam.ToInt32() = &H2) Then
Return
End If
MyBase.WndProc(m)
End Sub