Windows Form中的TabControl重绘

Windows Form中的TabControl重绘

http://blog.canself.com/tag/tabcontrol%E9%87%8D%E7%BB%98/

最近整理自己工作以来的旧项目，将其中的一些技术点整理出来。这个tabcontrol重绘相关的项目是自己毕业不久就做的一个，针对这个项目后面还有wpf版，暂且不提，暂时先看这个。

下面是软件的主界面，当然这个重绘的还不够完全，针对tabcontrol边框的处理还不好。

可以看出，也有一定效果的。

下面说说步骤，看看代码：

1、首先就是设置tabcontrol的drawmode属性，使其重绘有效。

1	this.tabc_draw.DrawMode = TabDrawMode.OwnerDrawFixed;

2、写tabcontrol的drawitem事件。

           Graphics g = e.Graphics;


            TabPage changedpage = tabc_draw.TabPages[e.Index];//当前处理标签
            Rectangle backrect = tabc_draw.GetTabRect(e.Index);//标签背景区域
            Brush backbrush;//标签背景色
            Brush fontbrush;//标签字体颜色
            Font tabFont;//标签字体
            Pen borderpen;//边框颜色


            //TabControl绘制
            Brush backtabcontrol = new SolidBrush(Color.Transparent);
            g.FillRectangle(backtabcontrol,this.tabc_draw.ClientRectangle.X + 100,this.tabc_draw.ClientRectangle.Y,this.tabc_draw.ClientRectangle.Size.Width,this.tabc_draw.ItemSize.Height);
            backtabcontrol.dispose();


            if (e.State == DrawItemState.Selected)
            {
                backbrush = new SolidBrush(Color.White);
                fontbrush = new SolidBrush(Color.Blue);
                tabFont = new Font("宋体",14,(FontStyle.Bold|FontStyle.Italic),GraphicsUnit.Pixel);
                borderpen = new Pen(Color.LightBlue);
            }
            else
            {
                backbrush = new SolidBrush(Color.WhiteSmoke);
                fontbrush = new SolidBrush(Color.Black);
                tabFont = new Font("宋体",12,FontStyle.Regular,GraphicsUnit.Pixel);
                borderpen = new Pen(Color.DarkGreen);
            }
            //绘制标签背景
            g.FillRectangle(backbrush,backrect);


            //绘制标签字体
            StringFormat _StringFlags = new StringFormat();
            _StringFlags.Alignment = Stringalignment.Center;
            _StringFlags.LineAlignment = Stringalignment.Center;
            g.DrawString(changedpage.Text,tabFont,fontbrush,backrect,new StringFormat(_StringFlags));
            //绘制非标签原始名称【可依据e.State修改】 g.DrawString("呵呵",new StringFormat(_StringFlags));


            //绘制标签边框
            //backrect.Offset(1,1);
            //backrect.Inflate(2,2);
            //g.DrawRectangle(borderpen,backrect);


            backbrush.dispose();
            tabFont.dispose();
            fontbrush.dispose();
            borderpen.dispose();

void tabc_draw_DrawItem(object sender,DrawItemEventArgs e)

2

{

3	Graphics g = e.Graphics;

4  

5	TabPage changedpage = tabc_draw.TabPages[e.Index];//当前处理标签

6 Rectangle backrect = tabc_draw.GetTabRect(e.Index);//标签背景区域

7	Brush backbrush;//标签背景色

8 Brush fontbrush;//标签字体颜色

9	Font tabFont;//标签字体

10 Pen borderpen;//边框颜色

11

12     //TabControl绘制

13	Brush backtabcontrol = new SolidBrush(Color.Black);

14 g.FillRectangle(backtabcontrol,.tabc_draw.ClientRectangle.X + 100,monospace!important; font-size:1em!important; margin:0px!important; outline:0px!important; padding:0px!important; vertical-align:baseline!important; float:none!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; line-height:1.1em!important; direction:ltr!important; display:inline!important; background:none!important">.tabc_draw.ClientRectangle.Y,monospace!important; font-size:1em!important; margin:0px!important; outline:0px!important; padding:0px!important; vertical-align:baseline!important; float:none!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; line-height:1.1em!important; direction:ltr!important; display:inline!important; background:none!important">.tabc_draw.ClientRectangle.Size.Width,monospace!important; font-size:1em!important; margin:0px!important; outline:0px!important; padding:0px!important; vertical-align:baseline!important; float:none!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; line-height:1.1em!important; direction:ltr!important; display:inline!important; background:none!important">.tabc_draw.ItemSize.Height);

15	backtabcontrol.dispose();

16  

17	if (e.State == DrawItemState.Selected)

18 19         backbrush = 20 fontbrush = SolidBrush(Color.Yellow);

21	tabFont = Font("宋体",15,FontStyle.Bold,GraphicsUnit.Pixel);

22 borderpen = Pen(Color.LightBlue);

23

}

24 else

25

{

26 SolidBrush(Color.White);

27	SolidBrush(Color.Red);

28 "楷体"

29	Pen(Color.DarkGreen);

30 }

31

//绘制标签背景

32 g.FillRectangle(backbrush,backrect);

33

34

//绘制标签字体

35	StringFormat _StringFlags = StringFormat();

36 _StringFlags.Alignment = Stringalignment.Center;

37	_StringFlags.LineAlignment = Stringalignment.Center;

38 g.DrawString(changedpage.Text, StringFormat(_StringFlags));

39	//绘制非标签原始名称【可依据e.State修改】 g.DrawString("呵呵",new StringFormat(_StringFlags));

40 41 //绘制标签边框

42 //backrect.Offset(1,1);

43	//backrect.Inflate(2,2);

44 g.DrawRectangle(borderpen,monospace!important; font-size:1em!important; margin:0px!important; outline:0px!important; padding:0px 0.3em 0px 0px!important; vertical-align:baseline!important; text-align:right!important; float:none!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:2.7em!important; line-height:1.1em!important; direction:ltr!important; display:block!important; background:none!important">45 46 backbrush.dispose();

47	tabFont.dispose();

48 fontbrush.dispose();

49	borderpen.dispose();

50 }