Question

C# 按住鼠标左键 在picturebox之间拖动时picturebox显示效果的问题

我在panel里放了4*4的16个picturebox，现在要选择一个picturebox1，按住左键拖动，在鼠标移动到picturebox2时，picturebox2的图片变成半透明效果，移出picturebox2时，picturebox2的图片恢复原来效果
要实现这种效果，都需要什么事件，过程是怎样的，最好描述详细点，有部分实现代码
希望有心人解答 直接百度，复制粘贴的就算了
我用了picturebox的MouseEnter事件，但按住左键拖动时，事件不会触发

Answer 1

//以下是设置PictureBox移动的代码using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace WindowsFormsApplication1
{
public partial class FrmPiceboxTd : Form
{
public FrmPiceboxTd()
{
InitializeComponent();
foreach (Control c in this.Controls)
{
if (c is PictureBox)
{
c.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pic_MouseMove);
c.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
}
}
}
private Point downPoint;//单击picturebox的坐标 private void pic_MouseDown(object sender, MouseEventArgs e)
{
//设置单击picturebox的坐标
if (e.Button == MouseButtons.Left)
{
downPoint = e.Location;
}
} private void pic_MouseMove(object sender, MouseEventArgs e)
{
//实现图片随鼠标拖动
if (e.Button == MouseButtons.Left)
{
((Control)sender).Location = new Point(
((Control)sender).Location.X + e.X - downPoint.X,
((Control)sender).Location.Y + e.Y - downPoint.Y);
}
}
}
}