C#更改tabControl选项卡颜色

发布时间:2010年06月29日      浏览次数:528 次
private void Form1_Load(object sender, EventArgs e)
{
this.tabControl1.DrawMode = System.Windows.Forms.TabDrawMode.OwnerDrawFixed;
this.tabControl1.DrawItem += new DrawItemEventHandler(this.tabControl1_DrawItem);
}
private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
StringFormat sf = new StringFormat();
sf.LineAlignment = StringAlignment.Center;
sf.Alignment = StringAlignment.Center;
if (e.Index == tabControl1.SelectedIndex)
e.Graphics.FillRectangle(Brushes.Red, e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
else
e.Graphics.FillRectangle(Brushes.White, e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.DrawString(((TabControl)sender).TabPages[e.Index].Text,
System.Windows.Forms.SystemInformation.MenuFont, new SolidBrush(Color.Black), e.Bounds, sf);
}
1.在Form类的构造函数中添加下列语句:
this.tabControl1.DrawMode = System.Windows.Forms.TabDrawMode.OwnerDrawFixed;
this.tabControl1.DrawItem += new DrawItemEventHandler(this.tabControl1_DrawItem);
2.实现下列函数:
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;
}
else
{
fntTab = e.Font;
bshBack = new SolidBrush(Color.Blue );
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);
}
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