see the consts on VB 2010:
''' <summary>
''' Specifies the underline styles for a segment of rich text.
''' </summary>
Public Enum UnderlineStyle
''' <summary>
''' No underlining.
''' </summary>
None = 0
''' <summary>
''' Single-line solid underline.
''' </summary>
Normal = 1
''' <summary>
''' Single-line underline broken between words.
''' </summary>
Word = 2
''' <summary>
''' Double-line underline.
''' </summary>
[Double] = 3
''' <summary>
''' 'Dotted' pattern underline.
''' </summary>
Dotted = 4
''' <summary>
''' 'Dash' pattern underline.
''' </summary>
Dash = 5
''' <summary>
''' 'Dash-dot' pattern underline.
''' </summary>
DashDot = 6
''' <summary>
''' 'Dash-dot-dot' pattern underline.
''' </summary>
DashDotDot = 7
''' <summary>
''' Single-line wave style underline.
''' </summary>
Wave = 8
''' <summary>
''' Single-line solid underline with extra thickness.
''' </summary>
Thick = 9
''' <summary>
''' Single-line solid underline with less thickness.
''' </summary>
HairLine = 10
''' <summary>
''' Double-line wave style underline.
''' </summary>
DoubleWave = 11
''' <summary>
''' Single-line wave style underline with extra thickness.
''' </summary>
HeavyWave = 12
''' <summary>
''' 'Long Dash' pattern underline.
''' </summary>
LongDash = 13
''' <summary>
''' 'Dash' pattern underline with extra thickness.
''' </summary>
ThickDash = 14
''' <summary>
''' 'Dash-dot' pattern underline with extra thickness.
''' </summary>
ThickDashDot = 15
''' <summary>
''' 'Dash-dot-dot' pattern underline with extra thickness.
''' </summary>
ThickDashDotDot = 16
''' <summary>
''' 'Dotted' pattern underline with extra thickness.
''' </summary>
ThickDotted = 17
''' <summary>
''' 'Long Dash' pattern underline with extra thickness.
''' </summary>
ThickLongDash = 18
End Enum
''' <summary>
''' Specifies the color of underline for a segment of rich text.
''' </summary>
Public Enum UnderlineColor
''' <summary>
''' No specific underline color specified.
''' </summary>
None = 0
''' <summary>
''' Black.
''' </summary>
Black = 1
''' <summary>
''' Blue.
''' </summary>
Blue = 2
''' <summary>
''' Cyan.
''' </summary>
Cyan = 3
''' <summary>
''' LimeGreen.
''' </summary>
LimeGreen = 4
''' <summary>
''' Magenta.
''' </summary>
Magenta = 5
''' <summary>
''' Red.
''' </summary>
Red = 6
''' <summary>
''' Yellow.
''' </summary>
Yellow = 7
''' <summary>
''' White.
''' </summary>
White = 8
''' <summary>
''' DarkBlue.
''' </summary>
DarkBlue = 9
''' <summary>
''' DarkCyan.
''' </summary>
DarkCyan = 10
''' <summary>
''' Green.
''' </summary>
Green = 11
''' <summary>
''' DarkMagenta.
''' </summary>
DarkMagenta = 12
''' <summary>
''' Brown.
''' </summary>
Brown = 13
''' <summary>
''' OliveGreen.
''' </summary>
OliveGreen = 14
''' <summary>
''' DarkGray.
''' </summary>
DarkGray = 15
''' <summary>
''' Gray.
''' </summary>
Gray = 16
End Enum
'lets Wrap the Text Table
#Region "WrapTable"
<DllImport("kernel32.dll", CharSet:=CharSet.Auto)> _
Private Shared Function LoadLibrary(dllName As String) As IntPtr
End Function
Protected Overrides ReadOnly Property CreateParams() As CreateParams
Get
Dim baseParams As CreateParams = MyBase.CreateParams
If LoadLibrary("msftedit.dll") <> IntPtr.Zero Then
baseParams.ClassName = "RICHEDIT50W"
End If
Return baseParams
End Get
End Property
#End Region
#Region "Interop-Defines"
<StructLayout(LayoutKind.Sequential)> _
Private Structure CHARFORMAT
Public cbSize As Integer
Public dwMask As UInteger
Public dwEffects As UInteger
Public yHeight As Integer
Public yOffset As Integer
Public crTextColor As Integer
Public bCharSet As Byte
Public bPitchAndFamily As Byte
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=32)> _
Public szFaceName As Char()
' CHARFORMAT2 from here onwards.
Public wWeight As Short
Public sSpacing As Short
Public crBackColor As Integer
Public LCID As Integer
Public dwReserved As UInteger
Public sStyle As Short
Public wKerning As Short
Public bUnderlineType As Byte
Public bAnimation As Byte
Public bRevAuthor As Byte
Public bUnderlineColor As Byte
End Structure
<DllImport("user32", CharSet:=CharSet.Auto)> _
Private Shared Function SendMessage(ByVal hWnd As IntPtr, ByVal msg As Integer, ByVal wParam As Integer, ByRef lp As CHARFORMAT) As Integer
End Function
Private Const WM_USER As Integer = &H400
Private Const EM_GETCHARFORMAT As Integer = WM_USER + 58
Private Const EM_SETCHARFORMAT As Integer = WM_USER + 68
Private Const SCF_SELECTION As Integer = &H1
Private Const SCF_WORD As Integer = &H2
Private Const SCF_ALL As Integer = &H4
Private Const EM_GETPARAFORMAT As Integer = 1085
Private Const EM_SETPARAFORMAT As Integer = 1095
Private Const PFM_ALIGNMENT As Integer = 8
#Region "CHARFORMAT2 Flags"
Private Const CFE_BOLD As UInt32 = &H1
Private Const CFE_ITALIC As UInt32 = &H2
Private Const CFE_UNDERLINE As UInt32 = &H4
Private Const CFE_STRIKEOUT As UInt32 = &H8
Private Const CFE_PROTECTED As UInt32 = &H10
Private Const CFE_LINK As UInt32 = &H20
Private Const CFE_AUTOCOLOR As UInt32 = &H40000000
Private Const CFE_SUBSCRIPT As UInt32 = &H10000
' Superscript and subscript are
Private Const CFE_SUPERSCRIPT As UInt32 = &H20000
' mutually exclusive
Private Const CFM_SMALLCAPS As Integer = &H40
' (*)
Private Const CFM_ALLCAPS As Integer = &H80
' Displayed by 3.0
Private Const CFM_HIDDEN As Integer = &H100
' Hidden by 3.0
Private Const CFM_OUTLINE As Integer = &H200
' (*)
Private Const CFM_SHADOW As Integer = &H400
' (*)
Private Const CFM_EMBOSS As Integer = &H800
' (*)
Private Const CFM_IMPRINT As Integer = &H1000
' (*)
Private Const CFM_DISABLED As Integer = &H2000
Private Const CFM_REVISED As Integer = &H4000
Private Const CFM_BACKCOLOR As Integer = &H4000000
Private Const CFM_LCID As Integer = &H2000000
Private Const CFM_UNDERLINETYPE As Integer = &H800000
' Many displayed by 3.0
Private Const CFM_WEIGHT As Integer = &H400000
Private Const CFM_SPACING As Integer = &H200000
' Displayed by 3.0
Private Const CFM_KERNING As Integer = &H100000
' (*)
Private Const CFM_STYLE As Integer = &H80000
' (*)
Private Const CFM_ANIMATION As Integer = &H40000
' (*)
Private Const CFM_REVAUTHOR As Integer = &H8000
Private Const CFM_BOLD As UInt32 = &H1
Private Const CFM_ITALIC As UInt32 = &H2
Private Const CFM_UNDERLINE As UInt32 = &H4
Private Const CFM_STRIKEOUT As UInt32 = &H8
Private Const CFM_PROTECTED As UInt32 = &H10
Private Const CFM_LINK As UInt32 = &H20
Private Const CFM_SIZE As UInt32 = &H8000000
Private Const CFM_COLOR As UInt32 = &H40000000
Private Const CFM_FACE As UInt32 = &H20000000
Private Const CFM_OFFSET As UInt32 = &H10000000
Private Const CFM_CHARSET As UInt32 = &H8000000
Private Const CFM_SUBSCRIPT As UInt32 = CFE_SUBSCRIPT Or CFE_SUPERSCRIPT
Private Const CFM_SUPERSCRIPT As UInt32 = CFM_SUBSCRIPT
Private Const CFU_UNDERLINENONE As Byte = &H0
Private Const CFU_UNDERLINE As Byte = &H1
Private Const CFU_UNDERLINEWORD As Byte = &H2
' (*) displayed as ordinary underline
Private Const CFU_UNDERLINEDOUBLE As Byte = &H3
' (*) displayed as ordinary underline
Private Const CFU_UNDERLINEDOTTED As Byte = &H4
Private Const CFU_UNDERLINEDASH As Byte = &H5
Private Const CFU_UNDERLINEDASHDOT As Byte = &H6
Private Const CFU_UNDERLINEDASHDOTDOT As Byte = &H7
Private Const CFU_UNDERLINEWAVE As Byte = &H8
Private Const CFU_UNDERLINETHICK As Byte = &H9
Private Const CFU_UNDERLINEHAIRLINE As Byte = &HA
' (*) displayed as ordinary underline
#End Region
#End Region
and now how i use them:
Public Sub SelectionUnderline(ByVal UTUnderlineType As UnderlineStyle, Optional ByVal UnderlineColor As UnderlineColor = PlusRichTextBox.UnderlineColor.Black)
' Set the underline color
Dim RTFformat As New CHARFORMAT()
RTFformat.cbSize = Marshal.SizeOf(RTFformat)
RTFformat.dwMask = CFM_UNDERLINETYPE Or CFM_UNDERLINE
RTFformat.bUnderlineType = CByte(UTUnderlineType)
RTFformat.bUnderlineColor = CByte(UnderlineColor)
SendMessage(Me.Handle, EM_SETCHARFORMAT, SCF_SELECTION, RTFformat)
End Sub
now the underline isn't showed :(
i don't understand why
