窗体的动画效果

最新推荐文章于 2025-07-08 10:52:24 发布

原创最新推荐文章于 2025-07-08 10:52:24 发布 · 1k 阅读

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#animation #blend #parameters #thread #object #user

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博客展示了AnimateWindow函数的使用，通过DllImport引入user32库，定义了多种动画效果的常量，如水平、垂直移动及淡入淡出等，还给出了在Form1关闭时调用该函数实现特定动画效果的代码示例。

  [System.Runtime.InteropServices.DllImport("user32")]
  private static extern bool AnimateWindow(IntPtr hwnd,int dwTime, int dwFlags);
  const int AW_HOR_POSITIVE = 0x0001;
  const int AW_HOR_NEGATIVE = 0x0002;
  const int AW_VER_POSITIVE = 0x0004;
  const int AW_VER_NEGATIVE = 0x0008;
  const int AW_CENTER = 0x0010;
  const int AW_HIDE = 0x10000;
  const int AW_ACTIVATE = 0x20000;
  const int AW_SLIDE = 0x40000;
  const int AW_BLEND = 0x80000;

private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
  {
         AnimateWindow(this.Handle, 1000, AW_SLIDE | AW_HIDE | AW_VER_NEGATIVE);
  }

Syntax

BOOL AnimateWindow(HWND hwnd,DWORD dwTime,DWORD dwFlags);

Parameters

hwnd
[in] Handle to the window to animate. The calling thread must own this window.
dwTime
[in] Specifies how long it takes to play the animation, in milliseconds. Typically, an animation takes 200 milliseconds to play.
dwFlags
[in] Specifies the type of animation. This parameter can be one or more of the following values. Note that, by default, these flags take effect when showing a window. To take effect when hiding a window, use AW_HIDE and a logical OR operator with the appropriate flags.
AW_SLIDE
Uses slide animation. By default, roll animation is used. This flag is ignored when used with AW_CENTER.
AW_ACTIVATE
Activates the window. Do not use this value with AW_HIDE.
AW_BLEND
Uses a fade effect. This flag can be used only if hwnd is a top-level window.
AW_HIDE
Hides the window. By default, the window is shown.
AW_CENTER
Makes the window appear to collapse inward if AW_HIDE is used or expand outward if the AW_HIDE is not used. The various direction flags have no effect.
AW_HOR_POSITIVE
Animates the window from left to right. This flag can be used with roll or slide animation. It is ignored when used with AW_CENTER or AW_BLEND.
AW_HOR_NEGATIVE
Animates the window from right to left. This flag can be used with roll or slide animation. It is ignored when used with AW_CENTER or AW_BLEND.
AW_VER_POSITIVE
Animates the window from top to bottom. This flag can be used with roll or slide animation. It is ignored when used with AW_CENTER or AW_BLEND.
AW_VER_NEGATIVE
Animates the window from bottom to top. This flag can be used with roll or slide animation. It is ignored when used with AW_CENTER or AW_BLEND.