调用Twain 直接返回扫描图片

最新推荐文章于 2024-10-19 12:26:44 发布

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最新推荐文章于 2024-10-19 12:26:44 发布 · 1.8k 阅读

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CC 4.0 BY-SA版权

这是一个关于如何使用Twain库在Windows Forms应用程序中实现直接扫描图片的功能。程序初始化Twain，选择扫描源，开始扫描，并将扫描的图片转换为Image对象进行处理。用户可以通过菜单项触发扫描操作，扫描完成后，图片会被保存或显示。

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using System.Collections.Generic;

using System.Linq;
using System.Text;

using TwainLib;
using System.Drawing.Imaging;

using TwainGui;

using System.Runtime.InteropServices;
using GdiPlusLib;
using WindowsFormsApplication1;
using System.IO;

namespace TwainGui
{
    public class MainFrame : System.Windows.Forms.Form, IMessageFilter
    {
        private System.Windows.Forms.MdiClient mdiClient1;
        private System.Windows.Forms.MenuItem menuMainFile;
        private System.Windows.Forms.MenuItem menuItemScan;
        private System.Windows.Forms.MenuItem menuItemSelSrc;
        private System.Windows.Forms.MenuItem menuMainWindow;
        private System.Windows.Forms.MenuItem menuItemExit;
        private System.Windows.Forms.MenuItem menuItemSepr;
        private System.Windows.Forms.MainMenu mainFrameMenu;
        private MenuItem menuItem1;
        private IContainer components;

        public MainFrame()
        {
            InitializeComponent();
            tw = new Twain();
            tw.Init(this.Handle);
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                tw.Finish();
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.menuMainFile = new System.Windows.Forms.MenuItem();
            this.menuItemSelSrc = new System.Windows.Forms.MenuItem();
            this.menuItemScan = new System.Windows.Forms.MenuItem();
            this.menuItemSepr = new System.Windows.Forms.MenuItem();
            this.menuItemExit = new System.Windows.Forms.MenuItem();
            this.mainFrameMenu = new System.Windows.Forms.MainMenu(this.components);
            this.menuMainWindow = new System.Windows.Forms.MenuItem();
            this.menuItem1 = new System.Windows.Forms.MenuItem();
            this.mdiClient1 = new System.Windows.Forms.MdiClient();
            this.SuspendLayout();
            //
            // menuMainFile
            //
            this.menuMainFile.Index = 0;
            this.menuMainFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItemSelSrc,
            this.menuItemScan,
            this.menuItemSepr,
            this.menuItemExit});
            this.menuMainFile.MergeType = System.Windows.Forms.MenuMerge.MergeItems;
            this.menuMainFile.Text = "&操作";
            //
            // menuItemSelSrc
            //