如何将ComboBox设置成平面的？

Question

Making Standard ComboBox appear flat
http://www.codeproject.com/cs/combobox/ComboBox_appears_flat.asp

Answer 1

也可以考虑用自定义控件,重写一个COMBOX组件,现在.NET里自定义控件很方便了!

Answer 2

textbox+button+CSS 不知行不行？
还有就是用listbox+button 为什么没有现成 的呢！

Answer 3

public class FlatComboBox : System.Windows.Forms.ComboBox
{
private System.Drawing.Color m_BorderColorOut;
private System.Drawing.Color m_BorderColorIn;
private System.Windows.Forms.ButtonBorderStyle m_BorderColorStyle;

public FlatComboBox()
{
m_BorderColorOut=System.Drawing.SystemColors.ControlDark;
m_BorderColorIn=System.Drawing.SystemColors.ControlLight;
BorderColorStyle=System.Windows.Forms.ButtonBorderStyle.Solid;
} public System.Drawing.Color BorderColorOut
{
get
{
return this.m_BorderColorOut;
}
set
{
this.m_BorderColorOut=value;
this.DrawBorder();
}
}
public System.Drawing.Color BorderColorIn
{
get
{
return this.m_BorderColorIn;
}
set
{
this.m_BorderColorIn=value;
this.DrawBorder();
}
}
public System.Windows.Forms.ButtonBorderStyle BorderColorStyle
{
get
{
return this.m_BorderColorStyle;
}
set
{
this.m_BorderColorStyle=value;
this.DrawBorder();
}
}
protected override void WndProc(ref System.Windows.Forms.Message m)
{
// if (m.Msg ==515)//m.Msg == 675mouseleave;512mousemove;m.Msg==256keydown;m.Msg ==257keyup;m.Msg ==514leftbuttonup;m.Msg ==513leftbuttondown;m.Msg ==515WM_LBUTTONDBLCLK
// {
// return;
// }
if (m.Msg==0xf || m.Msg==0x133)
{
this.DrawBorder();
}
base.WndProc (ref m); if (m.Msg==0xf || m.Msg==0x133)
{
this.DrawBorder();
}
}
private void DrawBorder()
{
System.Windows.Forms.ControlPaint.DrawBorder(this.CreateGraphics(),new System.Drawing.Rectangle(1,1,this.Width-2,this.Height-2),this.m_BorderColorIn,this.m_BorderColorStyle);
System.Windows.Forms.ControlPaint.DrawBorder(this.CreateGraphics(),new System.Drawing.Rectangle(0,0,this.Width,this.Height),this.m_BorderColorOut,this.m_BorderColorStyle);
}
}