using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WPFProject.Controls
{
    public partial class MaskControl : Panel
    {
        public MaskControl()
        {
            SetStyle(ControlStyles.Opaque, true);//设置背景透明
            SetStyle(ControlStyles.SupportsTransparentBackColor, true);//设置背景透明
            base.CreateControl();
            this.BackColor = Color.White;
            this.Visible = false;
        }

        //protected override CreateParams CreateParams
        //{
        //    get
        //    {
        //        CreateParams cp = base.CreateParams;
        //        cp.ExStyle |= 0x00000020; // 开启 WS_EX_TRANSPARENT,使控件支持透明
        //        return cp;
        //    }
        //}

        protected override void OnPaint(PaintEventArgs pe)
        {
            Pen labelBorderPen;
            SolidBrush labelBackColorBrush;
            Color cl = Color.FromArgb(128, this.BackColor);
            labelBorderPen = new Pen(cl, 0);
            labelBackColorBrush = new SolidBrush(cl);
            base.OnPaint(pe);
            pe.Graphics.DrawRectangle(labelBorderPen, 0, 0, this.Width, this.Height);
            pe.Graphics.FillRectangle(labelBackColorBrush, 0, 0, this.Width, this.Height);
        }

        /// <summary>
        /// 显示加载
        /// </summary>
        public void ShowLoad(Point location, Size size)
        {
            this.Location = location;
            this.Size = size;
            this.BringToFront();
            this.Dock = DockStyle.Fill;
            this.Visible = true;
        }



        /// <summary>

        /// 隐藏加载

        /// </summary>

        public void HideLoad()
        {
            this.Visible = false;
        }

    }
}