C# Winform:如何设置 TabControl(不是标签页)的基色 [英] C# Winform: How to set the Base Color of a TabControl (not the tabpage)

问题描述

这似乎是一个简单的问题，但如何设置选项卡控件"的背景颜色，它似乎源自标准窗口主题颜色.是否可以创建一个黑色标签控件，在标签本身(而不是标签页)上写有白色文本?

It seems like a simple question but how do I set the bacground color of the 'tab control', it seems to be derived from the standard window theme color. Is it Possible to create a black tab control with white text written on the tabs themselves (not the tab page)?

帮助，我对扩展现有控件的自定义控件有点熟悉，但我不知道要设置哪些属性(如果存在).

Help, I,m a little familiar with custom controls extending existing controls but I don't know what properties (if they exist) to set.

推荐答案

http://dotnetrix.co.uk/tabcontrol.htm

private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
TabPage CurrentTab = tabControl1.TabPages[e.Index];
Rectangle ItemRect = tabControl1.GetTabRect(e.Index);
SolidBrush FillBrush = new SolidBrush(Color.Red);
SolidBrush TextBrush = new SolidBrush(Color.White);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;

//If we are currently painting the Selected TabItem we'll
//change the brush colors and inflate the rectangle.
if (System.Convert.ToBoolean(e.State & DrawItemState.Selected))
{
    FillBrush.Color = Color.White;
    TextBrush.Color = Color.Red;
    ItemRect.Inflate(2, 2);
}

//Set up rotation for left and right aligned tabs
if (tabControl1.Alignment == TabAlignment.Left || tabControl1.Alignment == TabAlignment.Right)
{
    float RotateAngle = 90;
    if (tabControl1.Alignment == TabAlignment.Left)
        RotateAngle = 270;
    PointF cp = new PointF(ItemRect.Left + (ItemRect.Width / 2), ItemRect.Top + (ItemRect.Height / 2));
    e.Graphics.TranslateTransform(cp.X, cp.Y);
    e.Graphics.RotateTransform(RotateAngle);
    ItemRect = new Rectangle(-(ItemRect.Height / 2), -(ItemRect.Width / 2), ItemRect.Height, ItemRect.Width);
}

//Next we'll paint the TabItem with our Fill Brush
e.Graphics.FillRectangle(FillBrush, ItemRect);

//Now draw the text.
e.Graphics.DrawString(CurrentTab.Text, e.Font, TextBrush, (RectangleF)ItemRect, sf);

//Reset any Graphics rotation
e.Graphics.ResetTransform();

//Finally, we should Dispose of our brushes.
FillBrush.Dispose();
TextBrush.Dispose();
}

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