嘻嘻。。刚才参考了下别的语言写的。。用到了API

收到的鲜花

• 小仙 于 2008-10-18 11:23 送鲜花  49朵   附言：我很赞同

job 的帖子，顶下，顺便问句，你擅长哪方面的程序？

关注的人真少啊。

楼上是否有好介绍。。。
是高级语言的程序就可以了。呵呵。。  这网络资源多。。

给你顶一下，希望代码多加讲解。

一定要顶

using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Demo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        #region 常量
        private const int Flags常量 = 2;
        #endregion

        #region DLL函数定义
        [DllImport("user32.dll", EntryPoint = "SetWindowLong")]
        public static extern int SetWindowLong(IntPtr hwnd,int nIndex,int dwNewLong);
        [DllImport("user32.dll")]
        static extern bool SetLayeredWindowAttributes(IntPtr hwnd, int crKey,byte bAlpha, int dwFlags);
        [DllImport("user32.dll", EntryPoint = "GetWindowLong")]
        public static extern int GetWindowLong(IntPtr  hwnd,int nIndex);
        [DllImport("user32.dll", EntryPoint = "FindWindow")]
        public static extern int FindWindow(string lpClassName,string lpWindowName);
        #endregion

        #region 全局变量
        private IntPtr m_int窗口句柄 = IntPtr.Zero;
        #endregion

        #region 事件
        private void Form1_Load(object sender, EventArgs e)
        {
            int o_int窗口信息 = 0;
            m_int窗口句柄 = this.Handle;
            o_int窗口信息 = GetWindowLong(m_int窗口句柄, -20);
            o_int窗口信息 = (o_int窗口信息 | 524288);
            SetWindowLong(m_int窗口句柄, -20, o_int窗口信息);
            SetLayeredWindowAttributes(m_int窗口句柄, 0, 100, Flags常量);
            timer2.Interval = 50;
            timer2.Start();
            this.Left = Screen.PrimaryScreen.Bounds.Width - 200;
            this.Top = Screen.PrimaryScreen.Bounds.Height;
            timer1.Interval = 50;
            timer1.Start();

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            int a = 255;
            IntPtr o_int窗口句柄 = this.Handle;
            int o_int窗口信息 = GetWindowLong(m_int窗口句柄, -20);
            o_int窗口信息 = (o_int窗口信息 | 524288);
            SetWindowLong(m_int窗口句柄, -20, o_int窗口信息);
            SetLayeredWindowAttributes(o_int窗口句柄, 0, (byte)a, Flags常量);
            while (a > 50)
            {
                a = a - 20;
                SetLayeredWindowAttributes(o_int窗口句柄, 0, (byte)a, Flags常量);
                System.Threading.Thread.Sleep(100);
            }
            this.Dispose();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            int a = 0;
            while (a != 250)
            {
                a = a + 50;
                SetLayeredWindowAttributes(m_int窗口句柄, 0, (byte)a, Flags常量);
                System.Threading.Thread.Sleep(100);

            }

            timer1.Stop();
        }

        private void timer2_Tick(object sender, EventArgs e)
        {
            if (this.Top < Screen.PrimaryScreen.Bounds.Height - 200)
            {
                timer2.Stop();
            }
            this.Top = this.Top - 8;
        }
        #endregion

        private void label1_Click(object sender, EventArgs e)
        {

        }
        
    }
}
==========================
感觉dll在c#里调用很不方便(也可能是功能强大的原因?)
另外,我觉得不用dll也完全可以达到这样的效果吧???
用坐标和透明度属性应该就可以.

不用SetLayeredWindowAttributes透明不了窗口边框。。
可能写个region或重写可以，但代码肯定长很多。

winform 程序离开了api 就没意思了。。。

嗯,有道理.我就是想偷懒,能省则省,不能省就算了.
楼主,能不能给解释下这几个API的含义和用法.
api在c#下这么多参数怎么办?

我们一直在默默地关注着你...

谢谢。。 呵呵。。 刚又发了一个例程。希望 你们有空会下来玩玩。。