[Visual Basic]
Protected Overrides Sub OnDrawItem( _ 
   ByVal e As DrawItemEventArgs _ 
)

Parameter

e

Quellcode

[Visual Basic]
        Protected Overrides Sub OnDrawItem(ByVal e As System.Windows.Forms.DrawItemEventArgs) 
            If e.Index = -1 Then Return 
 
            ' Draw only the combo edit box 
            If (e.State And DrawItemState.ComboBoxEdit) <> DrawItemState.ComboBoxEdit Then Return 
 
            Dim ComboBoxSelection As TreeNodeEx 
 
            Try 
                ComboBoxSelection = CType(Me.Items(e.Index), TreeNodeEx) 
 
                e.DrawFocusRectangle() 
                e.DrawBackground() 
 
                Dim TextLeft As Integer = e.Bounds.Left 
 
                If Not Me.TreeView.ImageList Is Nothing Then 
                    Dim ImageIndex As Integer = ComboBoxSelection.TreeNode.SelectedImageIndex 
                    If ImageIndex < 0 Then ImageIndex = Me.TreeView.SelectedImageIndex 
                    If ImageIndex >= 0 Then 
                        Dim IconRectangle As Rectangle 
 
                        If Me.TreeView.ImageList.ImageSize.Height > Me.ItemHeight Then 
                            IconRectangle = New Rectangle(e.Bounds.Left + 2, e.Bounds.Top, Me.ItemHeight, Me.ItemHeight) 
                        Else 
                            IconRectangle = New Rectangle(New Point(e.Bounds.Left + 2, e.Bounds.Top), Me.TreeView.ImageList.ImageSize) 
                        End If 
 
                        Me.TreeView.ImageList.Draw(e.Graphics, IconRectangle.Left, IconRectangle.Top, IconRectangle.Width, IconRectangle.Height, ImageIndex) 
                        TextLeft = TextLeft + IconRectangle.Width + 2 
 
                        IconRectangle = Nothing 
                    End If 
                End If 
 
                e.Graphics.DrawString(ComboBoxSelection.TreeNode.Text, Me.Font, New SolidBrush(e.ForeColor), TextLeft, e.Bounds.Top + 2) 
            Catch ex As Exception 
                Throw ex 
            Finally 
                ComboBoxSelection = Nothing 
                MyBase.OnDrawItem(e) 
            End Try 
        End Sub

Forderungen

Plattformen: Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

Siehe auch

ComboBoxTreeClass