如何改变ComboBox控件的高度!

Question

??

Answer 1

this.comboBox1.DrawMode=System.Windows.Forms.DrawMode.OwnerDrawVariable;
this.comboBox1.ItemHeight=50;

Answer 2

using System.Runtime.InteropServices;private const int CB_SETITEMHEIGHT = 0x153;[DllImport("user32.dll", EntryPoint="SendMessageA")]
private static extern int SendMessage (IntPtr hwnd, int wMsg, int wParam, int lParam);
MessageBox.Show(SendMessage(this.comboBox1.Handle, CB_SETITEMHEIGHT, -1, 50).ToString());
for(int i = 0; i < 10; i++){
this.comboBox1.Items.Add("hello" + i.ToString());}

Answer 3

this.comboBox1.DrawMode=System.Windows.Forms.DrawMode.OwnerDrawVariable;
this.comboBox1.ItemHeight=50;
学习。

Answer 4

this.comboBox1.DrawMode=System.Windows.Forms.DrawMode.OwnerDrawVariable;
this.comboBox1.ItemHeight=50;
设置以后，下拉列表中的item是白色的，很奇怪？