C#調用windows api示例，
這是運行結果：
![]()
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace HoverTreeWinForm
{
public partial class FormHewenqi : Form
{
/// <summary>
/// http://hovertree.com/h/bjaf/v4y0b2l6.htm
/// </summary>
/// <param name="h"></param>
/// <param name="m"></param>
/// <param name="c"></param>
/// <param name="type"></param>
/// <returns></returns>
[DllImport("User32.dll")]
public static extern int MessageBox(int h, string m, string c, int type);
public FormHewenqi()
{
InitializeComponent();
}
private void button_hewenqi_Click(object sender, EventArgs e)
{
MessageBox(0, "Hello Win32 API HoverTree", "何問起網", 4);
}
private void linkLabel_help_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
System.Diagnostics.Process.Start("http://hovertree.com/h/bjaf/v4y0b2l6.htm");
}
}
}
轉載自：http://hovertree.com/h/bjaf/psjdasa2.htm
源碼下載：http://pan.baidu.com/s/1bnPPgL5
http://roucheng.cnblogs.com/
上面的示例，彈出信息框窗口並沒有指定父窗口句柄，所以彈出後，不用關掉就可以操作主窗體，比如你可以多次點擊按鈕彈出多個信息框。如果要彈出模式對話框，需先獲取當前窗體的句柄，請參考：http://hovertree.com/h/bjaf/8vw6i2yr.htm
模式對話框演示： http://pan.baidu.com/s/1bnNN2b1 密碼: dq8u
源碼下載：https://github.com/shangyuxian/HoverTree
