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Owner Drawn Combobox Selection Color

I have an owner drawn combobox when you dropdown the combobox and highlight an entry the color of the text is black and the hightlight box is also very dark so it makes it hard to see whats inder the selection.  How can i invert the color below the selection box so that it is more visible?
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BangorCC
Asked:
BangorCC
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1 Solution
 
iboutchkineCommented:
set the DrawMode to   DrawMode.OwnerDrawFixed

Private Sub cmb_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles cmb.DrawItem
        e = New System.Windows.Forms.DrawItemEventArgs(e.Graphics, _
                   e.Font, e.Bounds, e.Index, DrawItemState.None, Color.FromArgb(255, 0, 0), Color.FromArgb(255, 255, 255))
        e.DrawBackground()


        Dim sf As StringFormat = StringFormat.GenericDefault   ' Manipulate the stringformat as required
        Dim brsh As SolidBrush

        If e.Index = 2 Then'index of the item i want to change the color
            brsh = New SolidBrush(Color.Blue)
            e.Graphics.DrawString(cmb.Items(e.Index), e.Font, brsh, RectangleF.op_Implicit(e.Bounds), sf)
        Else'index of the rest of the items
            brsh = New SolidBrush(Color.Black)
            e.Graphics.DrawString(cmb.Items(e.Index), e.Font, brsh, RectangleF.op_Implicit(e.Bounds), sf)
        End If
    End Sub

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BangorCCAuthor Commented:
ok that works to change the color when i highlight it but when i move the highlight away it stays the same color and doesnt changed back
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BangorCCAuthor Commented:
is there anythign i can do to get the index of the current dropdown entry that is highlighted
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BangorCCAuthor Commented:
what is happening is the control is only drawing the highlighted entry how can i force it to redraw all entries
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iboutchkineCommented:
i = cmb.SelectedIndex ; - that will give you the index of selected item. You can check if Item is not selected then change color back

>>what is happening is the control is only drawing the highlighted entry how can i force it to redraw all entries

you can do it in a loop
for i = 0 to cmb.Items.Count-1
  e.Index = i
 .... do the rest
next
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BangorCCAuthor Commented:
ok this is what i have

    Protected Shadows Sub DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles MyBase.DrawItem
        Dim brsh As Brush
        e.DrawBackground()
        For x As Integer = 0 To ARList.Count - 1
            If e.Index = x Then
                brsh = Brushes.White
            Else
                brsh = Brushes.Black
            End If

            e.Graphics.DrawString(ARList(e.Index), Me.Font, brsh, _
                    New RectangleF(0, e.Bounds.Y, _
                    e.Bounds.Width, e.Bounds.Height))

        Next


        ' Draw the focus rectangle if the mouse hovers over an item.

        e.DrawFocusRectangle()

    End Sub

what is wrong with this it still doesn't change the selected ones back once i move the highlight box
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BangorCCAuthor Commented:
Am i even going in the right direction to highlight the selection right under the cursor by changing the text color it seems that if you change the highlighted field then when the color changes to only part of the dropdown that gets redrawn is the selection directly under the highlight rectangle
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BangorCCAuthor Commented:
e.index is the current row being drawn this property is read only is there any way to draw each e.index each time ondrawitem is called.  OnDrawItem is called when you move the focusrectangle over another item in the combobox however it seems that it only draws the e.index that has been highlighted by the focus.
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