C# 鼠标拖拽图像 实例源码

拖拽前拖拽后
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 } }}