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我需要MessageForm在主窗体 ( ) 上显示一个对话框窗体 ( ParentForm)。MessageForm包含一个面板 ( )，我在其mainPanel上添加了一些运行时控件（关闭按钮和许多标签和链接标签）。MessageForm 有一个特定的行为：它必须是半透明的，并且在显示时，ParentForm 必须是非活动的：

public MessageForm(FrmGlobalStatus _parent)
{
    InitializeComponent();
    this.TransparencyKey = this.BackColor;

}

protected override void OnPaintBackground(PaintEventArgs pe)
{
    var hb = new HatchBrush(HatchStyle.Percent50,
            System.Drawing.ColorTranslator.FromHtml(HATCH_BACK_COLOR),
            this.TransparencyKey);
    pe.Graphics.FillRectangle(hb, this.DisplayRectangle);
}

private void mainPanel_Paint(object sender, PaintEventArgs pe)
{
    using (System.Drawing.Pen p = new Pen(new SolidBrush(this.BorderColor)))
    {
        if (borderRadius > 0)
        {
            DrawRoundRect(pe.Graphics, p, 0, 0, mainPanel.Width - 1, mainPanel.Height - 1, borderRadius, this.FillColor);
        }
        else
        {
            pe.Graphics.DrawRectangle(p, 0, 0, mainPanel.Width - 1, mainPanel.Height - 1);
        }
    }
}

显示 MessageForm 的函数：

public void Show()
{
    LinkLabel newLinkLabel;
    Label newLabel;
    int lastItemBottom = 0;

    if (Items.Count > 0)
    {
        for (int i = 0; i < Items.Count; i++)
        {
            if (Items[i].LinkAreaLength != 0)
            {
                newLinkLabel = new LinkLabel();
                newLinkLabel.Location = new Point(LINKLABEL_H_MARGIN, LINKLABEL_V_MARGIN + i * LINKLABEL_STEP);
                lastItemBottom = newLinkLabel.Bottom;

                newLinkLabel.BackColor = Color.Transparent;
                newLinkLabel.Text = Items[i].Text;
                newLinkLabel.LinkColor = LinkDefaultColor;
                newLinkLabel.ActiveLinkColor = LinkActiveColor;
                newLinkLabel.AutoSize = true;
                newLinkLabel.Links.Add(Items[i].LinkAreaStart, Items[i].LinkAreaLength, Items[i].URL);
                newLinkLabel.VisitedLinkColor = LinkVisitedColor;
                newLinkLabel.Name = LINK_LABEL_FAMILY + i.ToString();
                newLinkLabel.LinkClicked += new LinkLabelLinkClickedEventHandler(LinkClicked);
                newLinkLabel.MouseHover += new EventHandler(Link_MouseHover);
                newLinkLabel.MouseLeave += new EventHandler(Link_MouseLeave);

                //for max label length calculation
                labelsWidth.Add(Convert.ToInt16((newLinkLabel.CreateGraphics().MeasureString(newLinkLabel.Text, newLinkLabel.Font)).Width));

                this.mainPanel.Controls.Add(newLinkLabel);
                newLinkLabel.BringToFront();
            }
            else
            {
                newLabel = new Label();
                newLabel.Location = new Point(LINKLABEL_H_MARGIN, LINKLABEL_V_MARGIN + i * LINKLABEL_STEP);
                lastItemBottom = newLabel.Bottom;

                newLabel.BackColor = Color.Transparent;
                newLabel.Text = Items[i].Text;

                newLabel.Name = LABEL_FAMILY + i.ToString();
                newLabel.AutoSize = true;

                //for max label length calculation
                labelsWidth.Add(Convert.ToInt16((newLabel.CreateGraphics().MeasureString(newLabel.Text, newLabel.Font)).Width));

                this.mainPanel.Controls.Add(newLabel);
                newLabel.BringToFront();
            }
        }
        //centering the mainPanel on MessageForm
        mainPanel.Width = BOX_WIDTH;
        mainPanel.Height = lastItemBottom + 2;// +LINKLABEL_V_MARGIN;
        mainPanel.Location = new Point((Width - mainPanel.Width) / 2, (Height - mainPanel.Height) / 2);
        ShowDialog(parent);
    }
}

LinkLabel“项目”是已经包含标签和控件的所有文本的特定结构的列表。好吧，现在的问题是：当我从 调用Show函数时ParentForm，我MessageForm的在闪烁，这足以让眼睛感到不安。我怎样才能消除这种闪烁？

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