WinFormsPopupAlerts/Alert.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
// 下载于www.51aspx.com
namespace WinFormsPopupAlerts
{
    /// <summary>
    /// Base class for each alert window.
    /// </summary>
    [System.ComponentModel.ToolboxItem(false)]
    public abstract partial class Alert : TopFormBase
    {
        private int top;
        private int left;
        private AlertAlignment align;
        private HidingStyle hidingStyle = HidingStyle.Fade;
        private ShowingStyle showingStyle = ShowingStyle.Fade;
        private int showingDuration = 300;
        private int hidingDuration = 300;
        private Padding padding = new Padding(5, 5, 5, 5);

        protected Alert(AlertAlignment align)
        {
            InitializeComponent();
            this.align = align;
        }

        /// <summary>
        /// Shows the alert in specified position.
        /// </summary>
        public void Show(int top, int left)
        {
            this.top = top;
            this.left = left;
            Show();
        }

        protected internal void InternalHide()
        {
            Hide();
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            if (!DesignMode)
            {
                Location = new Point(left, top);
                BeforeShown();
            }
        }

        protected override void OnShown(EventArgs e)
        {
            base.OnShown(e);