static extern int ExtEscape (IntPtr hdc, uint nEscape, uint cbInput, byte[] lpszInData, int cbOutput, IntPtr lpszOutData);

// GDI Escapes for ExtEscape()

    ExtEscapeSet(hdc, SETPOWERMANAGEMENT, size, vpm, 0, IntPtr.Zero);

static extern int ExtEscape(

Declare Function ExtEscapeSet Lib "coredll" Alias "ExtEscape" (ByVal hdc As IntPtr, _

    // GDI Escapes for ExtEscape()

        ExtEscapeSet(hdc, SETPOWERMANAGEMENT, size, vpm, 0, IntPtr.Zero);

    [DllImport("coredll", EntryPoint="ExtEscape")]

    private static extern int ExtEscapeSet(

static extern int ExtEscape(IntPtr hdc, int nEscape, int cbInput,

    Public Shared Function ExtEscape(ByVal hdc As IntPtr, ByVal nEscape As Integer, ByVal cbInput As Integer, ByVal lpszInData As String, ByVal cbOutput As Integer, ByRef lpszOutData As IntPtr) As Integer

                int test=ExtEscape( hDC, QUERYESCSUPPORT, 4, BLOB, 0, IntPtr.Zero);

                    test = ExtEscape(hDC,QUERYESCSUPPORT,isz,BLOB,0, IntPtr.Zero);