Enlarge and shrink the picture

Click to enlarge, the picture becomes bigger, click Shrinks, the picture shrinks

Code

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.ComponentModel;4 usingSystem.Data;5 usingSystem.Drawing;6 usingSystem.Text;7 usingSystem.Linq;8 usingSystem.Threading.Tasks;9 usingSystem.Windows.Forms;Ten usingdevexpress.xtraeditors; One usingCom.HuaQin.DBHelper; A usingSystem.Drawing; - usingSystem.Drawing.Imaging; - usingSystem.Reflection; the  - namespaceCom.HuaQin.WKStationPlugin - { -      Public Partial classXFrmQueryChild:DevExpress.XtraEditors.XtraForm +     { -         PrivateImage Mybitmap; + Point op, np; A Picture pic; atMyPoint Mousepoint =NewMyPoint (); -Boolean flag =true; - Boolean MouseDown; -Shift SFT =NewShift (); -         intScale =1; -          PublicXfrmquerychild (Image bit) in         { - InitializeComponent (); toPictureedit1.image =bit; +             //picturebox1.image = bit; -              the             //this.pictureBox1.Image = Mybitmap; *             //pic = new picture (bit, pictureBox1); $             //Pictureedit1.contextmenu = GetMenu (pictureEdit1);Panax Notoginseng         } -  the         Private voidToolstripbutton2_click (Objectsender, EventArgs e) +         { A             //Invokemenumethod (GetMenu (pictureEdit1), "Zoomto"); the             // +         } -  $         PrivateDevExpress.XtraEditors.Controls.PictureMenu getmenu (DevExpress.XtraEditors.PictureEdit Edit) $         { -PropertyInfo pi =typeof(DevExpress.XtraEditors.PictureEdit). GetProperty ("Menu", BindingFlags.NonPublic |bindingflags.instance); -             if(Pi! =NULL) the                 returnPi. GetValue (Edit,NULL) asDevExpress.XtraEditors.Controls.PictureMenu; -             return NULL;Wuyi         } the         Private voidInvokemenumethod (DevExpress.XtraEditors.Controls.PictureMenu menu,stringname) -         { WuMethodInfo mi =typeof(DevExpress.XtraEditors.Controls.PictureMenu). GetMethod (name, BindingFlags.NonPublic |bindingflags.instance); -             if(Mi! =NULL&& Menu! =NULL) AboutMi. Invoke (menu,New Object[] {menu,NewEventArgs ()}); $         } -  -         Private voidBarbuttonitem1_itemclick (Objectsender, DevExpress.XtraBars.ItemClickEventArgs e) -         { A             varmenu =GetMenu (pictureEdit1); +Invokemenumethod (menu,"Onzoomin"); the             //"Onzoomout" -         } $  the         Private voidBarbuttonitem2_itemclick (Objectsender, DevExpress.XtraBars.ItemClickEventArgs e) the         { the             varmenu =GetMenu (pictureEdit1); theInvokemenumethod (menu,"Onzoomout"); -         } in         the     } the}

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Enlarge and shrink the picture