eclipse - OleClientSite addKeyListener seems not working in swt in java -


i opening word document in swt in java using oleclientsite . want save document when user press ctrl+s . have added keylistener oleclientsite . code follows : 

public class swtmenuexample {     static oleclientsite clientsite;     static oleframe frame;     static file file;     static shell shell;     static keylistener keylistener;      public static void main(final string[] args) {         final display display = new display();         shell = new shell(display);          shell.setsize(800, 600);         shell.settext("word example");         shell.setlayout(new filllayout());          try {             frame = new oleframe(shell, swt.none);             // esto abre un documento existente             // clientsite = new oleclientsite(frame, swt.none, new             // file("doc1.doc"));             // esto abre un documento en blanco             // clientsite = new oleclientsite(frame, swt.none, "word.document");             addfilemenu(frame);             system.out.println(" in run method ");         } catch (final swterror e) {             system.out.println("unable open activex control");             display.dispose();             return;         }         keylistener = new keylistener() {              public void keyreleased(keyevent paramkeyevent) {              }              public void keypressed(keyevent paramkeyevent) {                 // todo auto-generated method stub                 if (((paramkeyevent.statemask & swt.ctrl) == swt.ctrl)                         && (paramkeyevent.keycode == 's')) {                     joptionpane.showmessagedialog(null,                             "ctrl+s pressed down initial ",                             "warning message", joptionpane.warning_message);                     if (file != null) {                         clientsite.save(file, true);                         filesave();                         joptionpane.showmessagedialog(null,                                 "ctrl+s pressed down", "warning message",                                 joptionpane.warning_message);                     } else                         joptionpane.showmessagedialog(null, "file null",                                 "warning message", joptionpane.warning_message);                 }              }         };             shell.open();         while (!shell.isdisposed()) {             if (!display.readanddispatch()) {                 display.sleep();             }         }         display.dispose();     }      static void addfilemenu(oleframe frame) {         final shell shell = frame.getshell();         menu menubar = shell.getmenubar();         if (menubar == null) {             menubar = new menu(shell, swt.bar);             shell.setmenubar(menubar);         }         menuitem filemenu = new menuitem(menubar, swt.cascade);         filemenu.settext("&file");         menu menufile = new menu(filemenu);         filemenu.setmenu(menufile);         frame.setfilemenus(new menuitem[] { filemenu });          menuitem menufilecreate = new menuitem(menufile, swt.cascade);         menufilecreate.settext("create file");         menufilecreate.addselectionlistener(new selectionadapter() {             public void widgetselected(selectionevent e) {                 filecreate();             }         });          menuitem menufileopen = new menuitem(menufile, swt.cascade);         menufileopen.settext("open file");         menufileopen.addselectionlistener(new selectionadapter() {             public void widgetselected(selectionevent e) {                 fileopen();             }         });          menuitem menufilesave = new menuitem(menufile, swt.cascade);         menufilesave.settext("save file");         menufilesave.addselectionlistener(new selectionadapter() {             public void widgetselected(selectionevent e) {                 if (file != null) {                     clientsite.save(file, true);                     filesave();                 }             }         });          menuitem menufileclose = new menuitem(menufile, swt.cascade);         menufileclose.settext("close file");         menufileclose.addselectionlistener(new selectionadapter() {             public void widgetselected(selectionevent e) {                 if (clientsite != null) {                     clientsite.dispose();                     file = null;                 }             }         });     }      static void filecreate() {         string filename = joptionpane                 .showinputdialog("please input name of file: ");         if (filename != null) {             if (filename.trim().equals("")) {                 jframe frame = new jframe(                         "joptionpane showmessagedialog example");                  joptionpane.showmessagedialog(frame,                         "file name must have value", "warning message",                         joptionpane.warning_message);             } else {                  connection conn = dbconnectionhandler.getconnection();                 preparedstatement pstmt;                 try {                     pstmt = conn                             .preparestatement("insert filedata(pr_key, filename, filedata) values (seq_file.nextval,?, empty_blob())");                     pstmt.setstring(1, filename + ".docx");                     pstmt.executeupdate();                 } catch (sqlexception e) {                     // todo auto-generated catch block                     e.printstacktrace();                 }             }         }      }      static void fileopen() {         filedialog dialog = new filedialog(shell, swt.open);         dialog.setfilterextensions(new string[] { "*.docx" });         string filename = dialog.open();         if (filename != null) {             if (clientsite != null)                 clientsite.dispose();             file = new file(filename);             clientsite = new oleclientsite(frame, swt.none, "word.document",                     file);             clientsite.addkeylistener(keylistener);              clientsite.doverb(ole.oleiverb_inplaceactivate);         }     }      static void filesave() {         try {             fileinputstream fis = new fileinputstream(file);             connection conn = dbconnectionhandler.getconnection();              preparedstatement pstmt = conn                     .preparestatement("update filedata  set filedata = ?  filename = ?");             pstmt.setbinarystream(1, fis, (int) file.length());             pstmt.setstring(2, file.getname());             pstmt.executeupdate();         } catch (sqlexception e) {             // todo auto-generated catch block             e.printstacktrace();         } catch (filenotfoundexception e) {             // todo auto-generated catch block             e.printstacktrace();         }     } }

but keylistener not working . problem ? how can solve ? please me .


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