众所周知，cbo1.ForeColor会同时改变cbo1.Text和下拉选项字体颜色。
独立绘制下拉选项字体颜色，ForeColor 只对 cbo1.Text 颜色有效的办法，示例：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
private void cb7_DrawItem(object sender, DrawItemEventArgs e){ DrawCboItems(sender, e);}private void cb7_SelectedIndexChanged(object sender, EventArgs e){ SetCboTextColor(sender);}private void SetCboTextColor(object sender){ ComboBox cbx = sender as ComboBox; if (cbx.Text == "+") cbx.ForeColor = Color.Red; else cbx.ForeColor = Color.Black;}private void DrawCboItems(object sender, DrawItemEventArgs e){ ComboBox cbo = sender as ComboBox; //初始化字体和背景色 Pen fColor = new Pen(Color.Black); Pen bColor = new Pen(Color.White); switch (e.Index) { //下拉选项的索引 case 1: { fColor = new Pen(Color.Red); break; } } e.Graphics.FillRectangle(bColor.Brush, e.Bounds); e.Graphics.DrawString((string)cbo.Items[e.Index], this.Font, fColor.Brush, e.Bounds);} |
以上就是Winform ComboBox如何独立绘制下拉选项的字体颜色的详细内容，更多关于Winform ComboBox绘制字体颜色的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/seanyan/p/13414050.html
