【示例教程】如何使用LEADTOOLS图像标注控件在界面上对图像进行标注-控件新闻-慧都网

【示例教程】如何使用LEADTOOLS图像标注控件在界面上对图像进行标注

原创|使用教程|编辑：黄竹雯|2017-11-22 11:19:17.000|阅读 544 次

概述：本教程将按照步骤分享如何使用LEADTOOLS图像标注控件在界面上对图像进行标注。

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1.创建VS项目

在VS中创建winform项目，创建完成后需要确认使用的.NET版本以及编译的目标平台。本例采用.NET4.0和X86平台进行编译。

2.引用接口dll

需要引用的dll列表如下，可以在C:\LEADTOOLS 19\Bin\Dotnet4\Win32找到。

主界面Form1代码中添加引用

using System.Windows.Forms;
using Leadtools;
using Leadtools.Codecs;
using Leadtools.WinForms;
using Leadtools.Annotations;

3.主界面添加相关控件

在设计界面添加一个MenuStrip菜单

添加按钮用以打开文件；

添加下拉框，包括2个选项：标注模式和浏览模式

4.后台代码编写

4.1控件初始化相关代码
添加相关对象

        RasterImageViewer viewer = new RasterImageViewer();
        RasterImage img;
        AnnAutomationManager annger;
        AnnAutomation automation;

添加initControl()方法，用于初始化图片浏览控件以及标注相关控件，在Form1()构造函数中调用该方法

private void initControl() {
            Support.SetLicense();
            viewer.Dock = DockStyle.Fill;
            panel1.Controls.Add(viewer);
            viewer.HorizontalAlignMode = RasterPaintAlignMode.Center;
            viewer.VerticalAlignMode = RasterPaintAlignMode.Center;
            loadImage("qwe.jpg");
            if (viewer.Image != null)
            {
                // create and setup the automation manager 
                annger = new AnnAutomationManager();

                // Instruct the manager to create the default (all) automation objects. 
                annger.CreateDefaultObjects();

                // create the toolbar and add it to the form 
                annger.CreateToolBar();
                Controls.Add(annger.ToolBar);

                // setup the automation (will create the container as well) 
                automation = new AnnAutomation(annger, viewer);

                // add an event handler for changes to the current designer 
                automation.CurrentDesignerChanged += new EventHandler(automation_CurrentDesignerChanged);

                // setup this automation as the active one 
                automation.Active = true;
            }
            toolStripComboBox1.SelectedIndex = 0;
        }

4.2添加加载图像方法

private void loadImage(string filename)
        {
            img = new RasterCodecs().Load(filename);
            viewer.Image = img;
        }

4.3添加automation_CurrentDesignerChanged方法

private void automation_CurrentDesignerChanged(object sender, EventArgs e)
        {
            AnnAutomation automation = sender as AnnAutomation;
            AnnButtonRunDesigner buttonRunDesigner = automation.CurrentDesigner as AnnButtonRunDesigner;
            if (buttonRunDesigner != null)
                buttonRunDesigner.Run += new EventHandler<AnnRunDesignerEventArgs>(buttonRunDesigner_Run);
        }

4.4添加buttonRunDesigner_Run方法

private void buttonRunDesigner_Run(object sender, AnnRunDesignerEventArgs e)
        {
            if (e.OperationStatus == AnnDesignerOperationStatus.End)
            {
                AnnButtonObject btn = e.Object as AnnButtonObject;
                MessageBox.Show(string.Format("Button with text = {0} was clicked!", btn.Text));
            }
        }

4.5添加打开文件按钮事件方法

private void loadImage(string filename)
        {
            img = new RasterCodecs().Load(filename);
            viewer.Image = img;
        }

4.6添加模式下拉框选项改变事件方法

private void toolStripComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            annger.UserMode = (toolStripComboBox1.SelectedIndex == 0) ? AnnUserMode.Design : AnnUserMode.Run;
        }