Winform窗体效果实例分析

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace WindowsApplication4{ public partial class Form3 : Form {  bool flag = false;  public Form3()  {   InitializeComponent();   flag = true;  }  #region user32.dll  //导入user32.dll  [System.Runtime.InteropServices.DllImport("user32")]  //声明API函数  private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);  #endregion  #region 常量  //正面_水平方向  const int AW_HOR_POSITIVE = 0x0001;  //负面_水平方向  const int AW_HOR_NEGATIVE = 0x0002;  //正面_垂直方向  const int AW_VER_POSITIVE = 0x0004;  //负面_垂直方向  const int AW_VER_NEGATIVE = 0x0008;  //由中间四周展开或  const int AW_CENTER = 0x0010;  //隐藏对象  const int AW_HIDE = 0x10000;  //显示对象  const int AW_ACTIVATE = 0x20000;  //拉幕滑动效果  const int AW_SLIDE = 0x40000;  //淡入淡出渐变效果  const int AW_BLEND = 0x80000;  #endregion  #region 判断方向  public int IsHorOrVer(int pos)  {   int rtn = 0;   //判断是正方向还是反方向   if (pos.Equals(0))   {    //判断是横向还是纵向    if (flag)     rtn = AW_HOR_POSITIVE;    else rtn = AW_VER_POSITIVE;   }   else if (pos.Equals(1))   {    //判断是横向还是纵向    if (flag)     rtn = AW_HOR_NEGATIVE;    else rtn = AW_VER_NEGATIVE;   }   return rtn;  }  #endregion  private void button1_Click(object sender, EventArgs e)  {   //动画――窗体向上拖拉   AnimateWindow(this.Handle, 1000, AW_SLIDE | AW_HIDE | IsHorOrVer(1));   //动画――窗体向下拖拉   AnimateWindow(this.Handle, 1000, AW_SLIDE | AW_ACTIVATE | IsHorOrVer(0));   //动画――窗体淡出特效   AnimateWindow(this.Handle, 1000, AW_BLEND | AW_HIDE | IsHorOrVer(1));   //动画――窗体淡入特效   AnimateWindow(this.Handle, 1000, AW_BLEND | AW_ACTIVATE | IsHorOrVer(0));   //动画――窗体由四周向中心缩小直至消失   AnimateWindow(this.Handle, 1000, AW_CENTER | AW_HIDE | IsHorOrVer(1));   //动画――窗体由中心向四周扩展   AnimateWindow(this.Handle, 1000, AW_CENTER | AW_ACTIVATE | IsHorOrVer(0));  } }}