鼠标拖拽图像实例

鼠标拖拽图像实例本实例在开发中有用的可以参考，MouseDelayImage。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Linq;
using System.Windows.Forms;

namespace MouseDelayImage
{
public partial class Frm_Main : Form
{
bool flag = false;//定义变量，用来标识鼠标是否移动
public Frm_Main()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
flag = false;
pictureBox1.Location = new System.Drawing.Point(14, 8);
openFileDialog1.Filter = "*.jpg,*.jpeg,*.bmp,*.gif,*.ico,*.png,*.tif,*.wmf|*.jpg;*.jpeg;*.bmp;*.gif;*.ico;*.png;*.tif;*.wmf";
openFileDialog1.ShowDialog();
Image myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName);
pictureBox1.Image = myImage;
}

private void Frm_Main_MouseMove(object sender, MouseEventArgs e)
{
if (flag) //如果鼠标在窗体中移动
pictureBox1.Location = new System.Drawing.Point(e.X, e.Y); //定义PictureBox控件的坐标位置
}

private void pictureBox1_MouseEnter(object sender, EventArgs e)
{
flag = true;//将标识设置为true
}
}
}