Vertical Tab Control with horizontal text in Winforms

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再見小時候
再見小時候 2020-12-14 20:08

I would like to have the tabs on my TabControl displayed on the left, or sometimes right.
Unlike the System.Windows.Forms.TabControl, however, I would like the text to r

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  •  执念已碎
    2020-12-14 20:41

    This is the code for a custom tab control that I'm quite fond of. You will need to copy and paste this code into a new class then rebuild the project. You will see a new custom user control displayed in your toolbox.

        Imports System.Drawing.Drawing2D
    Class DotNetBarTabcontrol
        Inherits TabControl
    
        Sub New()
            SetStyle(ControlStyles.AllPaintingInWmPaint Or ControlStyles.ResizeRedraw Or ControlStyles.UserPaint Or ControlStyles.DoubleBuffer, True)
            DoubleBuffered = True
            SizeMode = TabSizeMode.Fixed
            ItemSize = New Size(44, 136)
        End Sub
        Protected Overrides Sub CreateHandle()
            MyBase.CreateHandle()
            Alignment = TabAlignment.Left
        End Sub
    
        Function ToPen(ByVal color As Color) As Pen
            Return New Pen(color)
        End Function
    
        Function ToBrush(ByVal color As Color) As Brush
            Return New SolidBrush(color)
        End Function
    
        Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
            Dim B As New Bitmap(Width, Height)
            Dim G As Graphics = Graphics.FromImage(B)
            Try : SelectedTab.BackColor = Color.White : Catch : End Try
            G.Clear(Color.White)
            G.FillRectangle(New SolidBrush(Color.FromArgb(246, 248, 252)), New Rectangle(0, 0, ItemSize.Height + 4, Height))
            'G.DrawLine(New Pen(Color.FromArgb(170, 187, 204)), New Point(Width - 1, 0), New Point(Width - 1, Height - 1))    'comment out to get rid of the borders
            'G.DrawLine(New Pen(Color.FromArgb(170, 187, 204)), New Point(ItemSize.Height + 1, 0), New Point(Width - 1, 0))                   'comment out to get rid of the borders
            'G.DrawLine(New Pen(Color.FromArgb(170, 187, 204)), New Point(ItemSize.Height + 3, Height - 1), New Point(Width - 1, Height - 1)) 'comment out to get rid of the borders
            G.DrawLine(New Pen(Color.FromArgb(170, 187, 204)), New Point(ItemSize.Height + 3, 0), New Point(ItemSize.Height + 3, 999))
            For i = 0 To TabCount - 1
                If i = SelectedIndex Then
                    Dim x2 As Rectangle = New Rectangle(New Point(GetTabRect(i).Location.X - 2, GetTabRect(i).Location.Y - 2), New Size(GetTabRect(i).Width + 3, GetTabRect(i).Height - 1))
                    Dim myBlend As New ColorBlend()
                    myBlend.Colors = {Color.FromArgb(232, 232, 240), Color.FromArgb(232, 232, 240), Color.FromArgb(232, 232, 240)}
                    myBlend.Positions = {0.0F, 0.5F, 1.0F}
                    Dim lgBrush As New LinearGradientBrush(x2, Color.Black, Color.Black, 90.0F)
                    lgBrush.InterpolationColors = myBlend
                    G.FillRectangle(lgBrush, x2)
                    G.DrawRectangle(New Pen(Color.FromArgb(170, 187, 204)), x2)
    
    
                    G.SmoothingMode = SmoothingMode.HighQuality
                    Dim p() As Point = {New Point(ItemSize.Height - 3, GetTabRect(i).Location.Y + 20), New Point(ItemSize.Height + 4, GetTabRect(i).Location.Y + 14), New Point(ItemSize.Height + 4, GetTabRect(i).Location.Y + 27)}
                    G.FillPolygon(Brushes.White, p)
                    G.DrawPolygon(New Pen(Color.FromArgb(170, 187, 204)), p)
    
                    If ImageList IsNot Nothing Then
                        Try
                            If ImageList.Images(TabPages(i).ImageIndex) IsNot Nothing Then
    
                                G.DrawImage(ImageList.Images(TabPages(i).ImageIndex), New Point(x2.Location.X + 8, x2.Location.Y + 6))
                                G.DrawString("      " & TabPages(i).Text, Font, Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                            Else
                                G.DrawString(TabPages(i).Text, New Font(Font.FontFamily, Font.Size, FontStyle.Bold), Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                            End If
                        Catch ex As Exception
                            G.DrawString(TabPages(i).Text, New Font(Font.FontFamily, Font.Size, FontStyle.Bold), Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                        End Try
                    Else
                        G.DrawString(TabPages(i).Text, New Font(Font.FontFamily, Font.Size, FontStyle.Bold), Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                    End If
    
                    G.DrawLine(New Pen(Color.FromArgb(200, 200, 250)), New Point(x2.Location.X - 1, x2.Location.Y - 1), New Point(x2.Location.X, x2.Location.Y))
                    G.DrawLine(New Pen(Color.FromArgb(200, 200, 250)), New Point(x2.Location.X - 1, x2.Bottom - 1), New Point(x2.Location.X, x2.Bottom))
                Else
                    Dim x2 As Rectangle = New Rectangle(New Point(GetTabRect(i).Location.X - 2, GetTabRect(i).Location.Y - 2), New Size(GetTabRect(i).Width + 3, GetTabRect(i).Height + 1))
                    G.FillRectangle(New SolidBrush(Color.FromArgb(246, 248, 252)), x2)
                    G.DrawLine(New Pen(Color.FromArgb(170, 187, 204)), New Point(x2.Right, x2.Top), New Point(x2.Right, x2.Bottom))
                    If ImageList IsNot Nothing Then
                        Try
                            If ImageList.Images(TabPages(i).ImageIndex) IsNot Nothing Then
                                G.DrawImage(ImageList.Images(TabPages(i).ImageIndex), New Point(x2.Location.X + 8, x2.Location.Y + 6))
                                G.DrawString("      " & TabPages(i).Text, Font, Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                            Else
                                G.DrawString(TabPages(i).Text, Font, Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                            End If
                        Catch ex As Exception
                            G.DrawString(TabPages(i).Text, Font, Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                        End Try
                    Else
                        G.DrawString(TabPages(i).Text, Font, Brushes.DimGray, x2, New StringFormat With {.LineAlignment = StringAlignment.Center, .Alignment = StringAlignment.Center})
                    End If
                End If
            Next
    
            e.Graphics.DrawImage(B.Clone, 0, 0)
            G.Dispose() : B.Dispose()
        End Sub
    End Class
    

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