問題描述

前

  |Tab1|Tab2|Tab3| {    }
  |                     |
  |                     |
  |                     |
  |                     |
  |_____________________|

我可以改變 Tab 的 backcolor 和 forecolor.. 但我想改變那個 { } 的顏色 --> 空白空間可以做到這一點...它顯示默認的winforms顏色..幫助我在dis..

I am able to change the backcolor and forecolor of Tab.. but I want to change the color of that { } -- > Empty space is this possible to do that. .. It shows default winforms color..help me in dis..

 private void Form1_Load(object sender, EventArgs e)
    {

    }


    private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
    {
        Font fntTab;
        Brush bshBack;
        Brush bshFore;

        if ( e.Index == this.tabControl1.SelectedIndex)
        {
            fntTab = new Font(e.Font, FontStyle.Bold);
            bshBack = new System.Drawing.Drawing2D.LinearGradientBrush(e.Bounds, SystemColors.Control, SystemColors.Control, System.Drawing.Drawing2D.LinearGradientMode.BackwardDiagonal);
            bshFore = Brushes.Black;
            //bshBack = new System.Drawing.Drawing2D.LinearGradientBrush(e.Bounds, Color.LightSkyBlue , Color.LightGreen, System.Drawing.Drawing2D.LinearGradientMode.BackwardDiagonal);
            //bshFore = Brushes.Blue;
        }
        else
        {
            fntTab = e.Font;
            bshBack = new SolidBrush(Color.Red);
            bshFore = new SolidBrush(Color.Aqua);

            //bshBack = new SolidBrush(Color.White);
            //bshFore = new SolidBrush(Color.Black);
        }

        string tabName  = this.tabControl1.TabPages[e.Index].Text;
        StringFormat sftTab = new StringFormat();
        e.Graphics.FillRectangle(bshBack, e.Bounds);
        Rectangle  recTab = e.Bounds;
        recTab = new Rectangle( recTab.X,  recTab.Y + 4,  recTab.Width,  recTab.Height - 4);
        e.Graphics.DrawString(tabName, fntTab, bshFore, recTab, sftTab);

    }

推薦答案

我認為給那個空間一個顏色的唯一方法是覆蓋窗口的 OnPaintBackground 方法，所以把這個粘貼到你的表單(窗口)

I think the only way to give that space a color is to override the OnPaintBackground method of the window, so just paste this on your form (window)

您還必須將外觀屬性更改為正常"

you must also change the Appearance Property to "Normal"

private void Form1_Load(object sender, EventArgs e)
{

}

protected override void OnPaintBackground(PaintEventArgs e)
{
    base.OnPaintBackground(e);
    Rectangle lasttabrect = tabControl1.GetTabRect(tabControl1.TabPages.Count - 1);
    RectangleF emptyspacerect = new RectangleF(
            lasttabrect.X + lasttabrect.Width + tabControl1.Left,
            tabControl1.Top + lasttabrect.Y, 
            tabControl1.Width - (lasttabrect.X + lasttabrect.Width), 
            lasttabrect.Height);

    Brush b = Brushes.BlueViolet; // the color you want
    e.Graphics.FillRectangle(b, emptyspacerect );
}

對我來說效果很好

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