tl;dr; Use GDI+ SetWorldTransform With WinAPI's SetWorldTransform you can transform the space of device context: rotate, shear, offset, and scale. This is done by setting the members of a transform matrix of type XFORM. Fill its members according the…

private void pictureBox1_Click(object sender, EventArgs e) { ////实例化打印对象 PrintDocument print = new PrintDocument(); //打印事件 print.PrintPage += new PrintPageEventHandler(print_PrintPage); //开始打印 PrintDialog pd = new PrintDialog(); if (pd.ShowDialog() =…

.前言 C#打印小票可以与普通打印机一样,调用PrintDocument实现.也可以发送标注你的ESC指令实现.由于 调用PrintDocument类时,无法操作使用串口或TCP/IP接口连接的pos打印机,并且无法发送控制指令实现pos打印机的切纸.走纸等动作.因此个人建议使用ESC指令进行打印会更通用. 本类需要调用 ImageProcessor.cs .POS机打印小票ReceiptHelper using System; using System.Collections.Generic;…

1.前言 C#打印小票可以与普通打印机一样,调用PrintDocument实现.也可以发送标注你的ESC指令实现.由于 调用PrintDocument类时,无法操作使用串口或TCP/IP接口连接的pos打印机,并且无法发送控制指令实现pos打印机的切纸.走纸等动作.因此个人建议使用ESC指令进行打印会更通用. 本类需要调用 ImageProcessor.cs 2.POS机打印小票ReceiptHelper using System; using System.Collections.Generi…

“所有致我于死地的,也激发我胆魄”,姚贝娜的<心火>,是我近年来听过最好的歌,特此推荐一下. 图像处理,大概分三步:1.LockBits():2.进行处理:3.UnlockBits():这比起 C++ 来,不知清爽几许? 编程,是为了满足人的需求,所以进行灰度处理时,不是简单的 (r + g + b) / 3,而是分别乘以合适的比例值,r * 0.30 + g * 0.59 + b * 0.11.这是因为人眼对 green 最敏感,red 次之,blue 最低. 只实现了灰度处理,边缘提取,二…

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using WIA; using System.IO; using System.Drawing.Imaging; using iT…

private void panel1_Paint(object sender, PaintEventArgs e) { Rectangle r1 = new Rectangle(0, 0, 100, 40); Rectangle r2 = new Rectangle(14, 194, 100, 40); e.Graphics.DrawImage(pic, r1, r2, GraphicsUnit.Pixel); } #region 图片旋转函数 /// <summary> /// 以逆时针为…

方法一: public static Bitmap rotateImage(Bitmap b, float angle) { //create a new empty bitmap to hold rotated image Bitmap returnBitmap = new Bitmap(b.Width, b.Height); //make a graphics object from the empty bitmap Graphics g = Graphics.FromImage(retur…

Noting is more interesting than rotation! Your little sister likes to rotate things. To put it easier to analyze, your sister makes n rotations. In the i-th time, she makes everything in the plane rotate counter-clockwisely around a point ai by a rad…

jQuery旋转插件,支持Internet Explorer 6.0+ .Firefox 2.0 .Safari 3 .Opera 9 .Google Chrome rotate(angle) 正值表示顺时针方向旋转,负值表示逆时针方向旋转. jqueryRotate下载 使用方法: 旋转到指定角度 $("ID").rotate(45); <div id="start"><img src="start.png" id="…