C# Signature:

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public class LOGFONT
{
    public int lfHeight;
    public int lfWidth;
    public int lfEscapement;
    public int lfOrientation;
    public int lfWeight;
    public byte lfItalic;
    public byte lfUnderline;
    public byte lfStrikeOut;
    public byte lfCharSet;
    public byte lfOutPrecision;
    public byte lfClipPrecision;
    public byte lfQuality;
    public byte lfPitchAndFamily;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst=32)]
    public string   lfFaceName;
}

VB .NET Signature:

    <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> _
    Public Structure LOGFONT
    Public lfHeight As Int32
    Public lfWidth As Int32
    Public lfEscapement As Int32
    Public lfOrientation As Int32
    Public lfWeight As Int32
    Public lfItalic As Byte
    Public lfUnderline As Byte
    Public lfStrikeOut As Byte
    Public lfCharSet As Byte
    Public lfOutPrecision As Byte
    Public lfClipPrecision As Byte
    Public lfQuality As Byte
    Public lfPitchAndFamily As Byte
    <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=32)> _
    Public lfFaceName As String
    End Structure

User-Defined Types:

None.

Notes:

See this MSDN reference: Default Marshaling for Strings

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpcondefaultmarshalingforstrings.asp

Tips & Tricks:

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Sample Code:

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Alternative Managed API:

The .NET Framework class Font, has a method, Font::FromLogfont that takes an Object reference as it's method parameter. You must define a managed LOGFONT class using the same format as the C# signature above. When using the StructLayout attribute on the class definition, you must set the CharSet property to Auto (the default is Ansi, which will not work correctly). The only difficulty encountered is passing the string value (the designated Font Face Name) to the FromLogfont method; apparently, this must have the attribute: [MarshalAs(UnmanagedType::ByValTStr)] enum value for the method to work correctly. Then, when instantiating a new Font in your managed application, you must cast the LOGFONT class (with appropriate member values assigned) to a System::Object for the function to work without generating a runtime exception.

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