各位大侠，谁知道：如何实现类似photoshop图层的功能显示透明图片？

我这里有几张透明图片，想实现类似photoshop图层的功能，点击显示就把要显示的那层显示出来，从而实现叠加的功能！！

大侠们，帮忙看看啊！！

你用几个picturebox分别显示几张图片，再通过程序调整它们的位置和显示/隐藏，可以吗？

试了一下，把他们的backcolor设成透明的，把后面的一张做成前面一张的parent也不行。无法实现叠加的效果，也不能想让任意一张显示就让任意一张显示的功能！！

使用alpha通道。

呵呵，是我想得太简单了。
直接将背景设成透明无法做到透明。需要通过重绘来控件图片的透明度（当然，picturebox的背景依然需要设成透明）。

而随意控件显示，不就是控制picturebox的visible属性吗？

alpha也不是太好用,我试过/

经过一天的冥思苦想，终于实现了，和大家分享一下：
首先在控件内加入多个picturebox，把它们的backcolor都设成透明的，下面的picturebox其上面picturebox的paraent，这一点很重要，否则就无法实现图像所谓“叠加”的功能了，然后通过程序加载已经是png格式的图像到各个picturebox控件内实现“叠加”。

代码写的有点笨，哈哈，仅供参考：
using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Text.RegularExpressions;
using System.Drawing.Imaging;
using
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Cutters_layout
{
   
    public partial class Form1 : Form
    {
        public PictureBox[] pict = new PictureBox[8];
        public Form1()
        {
            InitializeComponent();
            SetStyle(ControlStyles.SupportsTransparentBackColor,true);
            picBox_b1.Parent = picBox_back;
            picBox_b2.Parent = picBox_b1;
            picBox_b3.Parent = picBox_b2;
            picBox_b4.Parent = picBox_b3;
            picBox_b5.Parent = picBox_b4;
            picBox_b6.Parent = picBox_b5;
            picBox_b7.Parent = picBox_b6;
            
            picBox_b1.BackColor = Color.Transparent;
            picBox_b2.BackColor = Color.Transparent;
            picBox_b3.BackColor = Color.Transparent;
            picBox_b4.BackColor = Color.Transparent;
            picBox_b5.BackColor = Color.Transparent;
            picBox_b6.BackColor = Color.Transparent;
            picBox_b7.BackColor = Color.Transparent;
            
        }

        private void checkbox(PictureBox pictBox, CheckBox checkboxNo)
        {
            
            string picRightName = pictBox.Name.ToString().Substring(pictBox.Name.Length - 1, 1);
            int pictNo = Convert.ToInt16(picRightName);
            if (checkboxNo.Checked == true)
            {
                pictBox.Image = pict[pictNo].Image;
            }
            else
            {
                pictBox.Image = null;
            }
            

        }
        


        private void checkBox_B1_CheckedChanged(object sender, EventArgs e)
        {

            checkbox(picBox_b1, checkBox_B1);
        }

        private void checkBox_B2_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b2, checkBox_B2);
        }

        private void checkBox_B3_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b3, checkBox_B3);
        }

        private void checkBox_B4_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b4, checkBox_B4);
        }

        private void checkBox_B5_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b5, checkBox_B5);
        }

        private void checkBox_B6_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b6, checkBox_B6);
        }

        private void checkBox_B7_CheckedChanged(object sender, EventArgs e)
        {
            checkbox(picBox_b7, checkBox_B7);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            picBox_b1.Image.Save("pb1.png",ImageFormat.Png);
            Image b1 = Image.FromFile("pb1.png");
            picBox_b2.Image.Save("pb2.png", ImageFormat.Png);
            Image b2 = Image.FromFile("pb2.png");
            picBox_b3.Image.Save("pb3.png", ImageFormat.Png);
            Image b3 = Image.FromFile("pb3.png");
            picBox_b4.Image.Save("pb4.png", ImageFormat.Png);
            Image b4 = Image.FromFile("pb4.png");
            picBox_b5.Image.Save("pb5.png", ImageFormat.Png);
            Image b5 = Image.FromFile("pb5.png");
            picBox_b6.Image.Save("pb6.png", ImageFormat.Png);
            Image b6 = Image.FromFile("pb6.png");
            picBox_b7.Image.Save("pb7.png", ImageFormat.Png);
            Image b7 = Image.FromFile("pb7.png");
            
            string imageName = "pb";
            for (int i = 1; i <= 7; i++)
            {
                imageName = "pb" + i.ToString()+".png";

                pict[i] = new PictureBox();
                pict[i].Image = Image.FromFile(imageName);
               
            }
            picBox_b1.Image = null;
            picBox_b2.Image = null;
            picBox_b3.Image = null;
            picBox_b4.Image = null;
            picBox_b5.Image = null;
            picBox_b6.Image = null;
            picBox_b7.Image = null;

        }

        
    }
}

再次感谢bygg的支持！！

下面的picturebox其上面picturebox的parent?

这个我也想过，但是这样不影响了灵活性吗？
如果五张图片叠加，那不是第一个picturebox是第二个picturebox的老爸，而第二个picturebox则是第三个的老爸，依次类推？

如果中间要改变这五张图片显示的顺序，岂不是比较麻烦？

呵呵