C# Definition:

[StructLayout(LayoutKind.Sequential)]
public struct DEVMODE
{
    [MarshalAs(UnmanagedType.ByValTStr,SizeConst=32)]
    public string dmDeviceName;
    public short  dmSpecVersion;
    public short  dmDriverVersion;
    public short  dmSize;
    public short  dmDriverExtra;
    public int    dmFields;

    public short dmOrientation;
    public short dmPaperSize;
    public short dmPaperLength;
    public short dmPaperWidth;

    public short dmScale;
    public short dmCopies;
    public short dmDefaultSource;
    public short dmPrintQuality;
    public short dmColor;
    public short dmDuplex;
    public short dmYResolution;
    public short dmTTOption;
    public short dmCollate;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
    public string dmFormName;
    public short dmLogPixels;
    public short dmBitsPerPel;
    public int   dmPelsWidth;
    public int   dmPelsHeight;

    public int   dmDisplayFlags;
    public int   dmDisplayFrequency;

    public int   dmICMMethod;
    public int   dmICMIntent;
    public int   dmMediaType;
    public int   dmDitherType;
    public int   dmReserved1;
    public int   dmReserved2;

    public int   dmPanningWidth;
    public int   dmPanningHeight;
};

VB Definition:

    Public Structure DEVMODE
    <VBFixedString(CCHDEVICENAME), MarshalAs(UnmanagedType.ByValTStr, SizeConst:=CCHDEVICENAME)> Public dmDeviceName As String
    Dim dmSpecVersion As Short
    Dim dmDriverVersion As Short
    Dim dmSize As Short
    Dim dmDriverExtra As Short
    Dim dmFields As Integer
    Dim dmPosition As POINTL
    Dim dmScale As Short
    Dim dmCopies As Short
    Dim dmDefaultSource As Short
    Dim dmPrintQuality As Short
    Dim dmColor As Short
    Dim dmDuplex As Short
    Dim dmYResolution As Short
    Dim dmTTOption As Short
    Dim dmCollate As Short
    <VBFixedString(CCHFORMNAME), MarshalAs(UnmanagedType.ByValTStr, SizeConst:=CCHFORMNAME)> Public dmFormName As String
    Dim dmLogPixels As Short
    Dim dmBitsPerPel As Integer
    Dim dmPelsWidth As Integer
    Dim dmPelsHeight As Integer
    Dim dmDisplayFlags As Integer
    Dim dmDisplayFrequency As Integer
    End Structure

Notes:

C# add:

using System.Runtime.InteropServices;

Vb.NET add:

Imports System.Runtime.InteropServices

Tips & Tricks:

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Sample Code:

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Alternative Managed API:

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