如何将选择颜色更改为checkBoxList？

Question

我想更改CheckedListBox上的蓝色选择颜色。我已经尝试创建Custom CheckedListBox，但由于出现在x64上，因此出现错误。我在互联网上搜索了2天，却找不到任何东西。还有其他人遇到同样的问题吗？

如果您要投反对票，请解释原因，谢谢：）

  protected override void OnDrawItem(DrawItemEventArgs e)
    {
        if (DrawItemState.None != e.State)
            e = new DrawItemEventArgs(e.Graphics, e.Font, e.Bounds, e.Index, DrawItemState.NoFocusRect, this.ForeColor, Color.FromArgb(255, 90, 0));

        base.OnDrawItem(e);
    }

我得到的错误->无法加载工具箱项'CustomCheckeListBox'，它将从工具箱中删除。

Answer 1

这在我的代码中有效：

    protected override void OnDrawItem(DrawItemEventArgs e)
    {
        if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            e = new DrawItemEventArgs(e.Graphics,
                                      e.Font,
                                      e.Bounds,
                                      e.Index,
                                      e.State ^ DrawItemState.Selected,
                                      e.ForeColor,
                                      Color.Red);//Choose the color

        System.Drawing.Size checkSize = CheckBoxRenderer.GetGlyphSize(e.Graphics, System.Windows.Forms.VisualStyles.CheckBoxState.MixedNormal);
        int dx = (e.Bounds.Height - checkSize.Width) / 2;
        e.DrawBackground();
        bool isChecked = GetItemChecked(e.Index);//For some reason e.State doesn't work so we have to do this instead.


        if (Enabled)
        {
            CheckBoxRenderer.DrawCheckBox(e.Graphics, new Point(dx, e.Bounds.Top + dx), isChecked ? System.Windows.Forms.VisualStyles.CheckBoxState.CheckedNormal : System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal);
        }
        else
        {
            CheckBoxRenderer.DrawCheckBox(e.Graphics, new Point(dx, e.Bounds.Top + dx), isChecked ? System.Windows.Forms.VisualStyles.CheckBoxState.CheckedDisabled : System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedDisabled);
        }

        using (StringFormat sf = new StringFormat { LineAlignment = StringAlignment.Center })
        {
            using (Brush brush = new SolidBrush(isChecked ? CheckedItemColor : (Enabled ? ForeColor : SystemColors.GrayText)))
            {
                e.Graphics.DrawString(Items[e.Index].ToString(), Font, brush, new Rectangle(e.Bounds.Height, e.Bounds.Top, e.Bounds.Width - e.Bounds.Height, e.Bounds.Height), sf);
            }
        }

        base.OnDrawItem(e);
    }