如何在 C# 中为我的控件添加移动效果? [英] How can I add moving effects to my controls in C#?

问题描述

我的 C# 表单中有一个面板，我有一个按钮.当我单击按钮时，不可见的面板会显示出来.相反，我希望面板移入或滑入.例如，当您单击组合框时，下拉列表不会弹出.我希望我的面板显示为这样.我该怎么做?

I have a Panel In my C# form and I have a button. When I click on the Button the invisible Panel Shows. Instead of that I want the Panel to move in or slide in. For example when you click on a combobox the dropdown list doesnt just pop in. I want my Panel to appear like that. How can I do that ?

推荐答案

窗口动画是 Windows 的内置功能.这是一个使用它的类:

Window animation is a built-in feature for Windows. Here's a class that uses it:

using System;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;

public static class Util {
    public enum Effect { Roll, Slide, Center, Blend }

    public static void Animate(Control ctl, Effect effect, int msec, int angle) {
        int flags = effmap[(int)effect];
        if (ctl.Visible) { flags |= 0x10000; angle += 180; }
        else {
            if (ctl.TopLevelControl == ctl) flags |= 0x20000; 
            else if (effect == Effect.Blend) throw new ArgumentException();
        }
        flags |= dirmap[(angle % 360) / 45];
        bool ok = AnimateWindow(ctl.Handle, msec, flags);
        if (!ok) throw new Exception("Animation failed");
        ctl.Visible = !ctl.Visible;
    }

    private static int[] dirmap = { 1, 5, 4, 6, 2, 10, 8, 9 };
    private static int[] effmap = { 0, 0x40000, 0x10, 0x80000 };

    [DllImport("user32.dll")]
    private static extern bool AnimateWindow(IntPtr handle, int msec, int flags);
}

示例用法:

    private void button2_Click(object sender, EventArgs e) {
        Util.Animate(button1, Util.Effect.Slide, 150, 180);
    }

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