zoukankan      html  css  js  c++  java
  • C# 之文件拖拽和pixturBox缩放与拖拽

    文件拖拽:

     效果:将一个文件拖拽到窗体的某个控件时,将该控件的路径显示在该控件上,只要拿到了路径自然可以读取文件中的内容了。

     将一个控件的属性AllowDrop设置为true,然后添加DragDrop、DragEnter时间处理函数,如下:

     

    private void txtAppPath_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
            {
                if (e.Data.GetDataPresent(DataFormats.FileDrop))
                {
                    e.Effect = DragDropEffects.Link;
                }
                else
                {
                    e.Effect = DragDropEffects.None;
                }
            }
    
            private void txtAppPath_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
            {
                txtLocalFileName.Text = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();
            }

    图片的缩放和拖拽:

    一、实现鼠标滚轮控制图片缩放;

    1、设置PixtureBox属性:

      Dock:none

      SizeMode:StretchImage

    2、添加事件:

    (1)设置绑定图片路径

     

    private void ScrewInfoForm_Shown(object sender, EventArgs e)
            {
                //加载装配图纸
                string drawingPath = Path.Combine(@"\192.168.2.136PCS", productCode + ".png");
                try
                {
                    pbxDrawing.Load(drawingPath);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("加载装配图纸失败,详细:" + ex.Message, "测量", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }

    (2)添加事件1

    pbxDrawing.MouseWheel += new MouseEventHandler(pbxDrawing_MouseWheel);

    //实现滚轮缩放
            private void pbxDrawing_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
            {
                if (e.Delta < 0)
                {
                    this.pbxDrawing.Width = this.pbxDrawing.Width * 9 / 10;
                    this.pbxDrawing.Height = this.pbxDrawing.Height * 9 / 10;
                }
                else
                {
                    this.pbxDrawing.Width = this.pbxDrawing.Width * 11 / 10;
                    this.pbxDrawing.Height = this.pbxDrawing.Height * 11 / 10;
                }
            }

    (3)添加事件2

    //实现移动图片
            int xPos;
            int yPos;
            bool MoveFlag;
            private void pbxDrawing_MouseDown(object sender, MouseEventArgs e)
            {
                this.pbxDrawing.Focus();
                MoveFlag = true;//已经按下.
                xPos = e.X;//当前x坐标.
                yPos = e.Y;//当前y坐标.
            }
    
            //在picturebox的鼠标按下事件里.
            private void pbxDrawing_MouseUp(object sender, MouseEventArgs e)
            {
                MoveFlag = false;
            }
    
            //在picturebox鼠标移动
            private void pbxDrawing_MouseMove(object sender, MouseEventArgs e)
            {
                if (MoveFlag)
                {
                    pbxDrawing.Left += Convert.ToInt16(e.X - xPos);//设置x坐标.
                    pbxDrawing.Top += Convert.ToInt16(e.Y - yPos);//设置y坐标.
                }
            }
  • 相关阅读:
    Sublime 下配置vim模式 + VintageEx-master下载地址
    Potplayer快捷键
    Failed to fetch URl https://dl-ssl.google.com/android/repository/addo Android SDK更新以及ADT更新出现问题的解决办法
    最快速的Android开发环境搭建ADT-Bundle及Hello World
    Android 开发环境下载地址 -- 百度网盘 adt-bundle android-studio sdk adt 下载
    X-Mirage苹果屏幕录制工具7天试用期破解 imsoft.cnblogs
    玩转博客园的心路总结
    玩转博客园的5个小技巧
    五个对你有用的Everything搜索技巧
    PS如何批量处理图片
  • 原文地址:https://www.cnblogs.com/Liyuting/p/7759948.html
Copyright © 2011-2022 走看看