C# Definition:

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public class OpenFileName
{
    int lstructSize;
    int hwndOwner;
    int hInstance;
    string lpstrFilter = null;
    string lpstrCustomFilter = null;
    int lMaxCustomFilter;
    int lFilterIndex;
    string lpstrFile = null;
    int lMaxFile = 0;
    string lpstrFiteTitle = null;
    int lMaxFileTitle = 0;
    string lpstrInitialDir = null;
    string lpstrTitle = null;
    int lFlags;
    ushort nFileOffset;
    ushort nFileExtension;
    string lpstrDefExt = null;
    int lCustData;
    int lpfHook;
    int lpTemplateName;
}

VB Definition:

Structure OpenFileName
   Dim lStructSize As Integer ' Filled with UDT size
   Dim hwndOwner As Integer ' Tied to Owner
   Dim hInstance As Integer ' Ignored
   Dim lpstrFilter As String ' Tied to Filter
   Dim lpstrCustomFilter As String ' Ignored
   Dim nMaxCustFilter As Integer ' Ignored
   Dim nFilterIndex As Integer ' Tied to FilterIndex
   Dim lpstrFile As String ' Tied to FileName
   Dim nMaxFile As Integer ' Handled internally
   Dim lpstrFileTitle As String ' Tied to FileTitle
   Dim nMaxFileTitle As Integer ' Handled internally
   Dim lpstrInitialDir As String ' Tied to InitDir
   Dim lpstrTitle As String ' Tied to DlgTitle
   Dim Flags As Integer ' Tied to Flags
   Dim nFileOffset As Short ' Ignored
   Dim nFileExtension As Short ' Ignored
   Dim lpstrDefExt As String ' Tied to DefaultExt
   Dim lCustData As Integer ' Ignored
   Dim lpfnHook As Integer ' Ignored
   Dim lpTemplateName As Integer ' Ignored
End Structure

User-Defined Field Types:

None.

Notes:

None.