QT5 Qtreewidget Implementation Click on the item event and the right-click menu to delete item and rename item

1. New a Qtreewidget object, and set header tag, and root node (required by personal program)

   qtreewidget* treewidget = Ui.treewidget; // I've dragged a qtreewidget in the UI designer.     QString headers;    Headers  "Name"  ;    Treewidget, Setheaderlabel (headers);    Qstringlist Roottext;    Roottext  "Wells";     New Qtreewidgetitem (Treewidget, Roottext);        

2, add Qtreewidgetitem (here is the name of the file in the folder to read the name of the item)

     for (int2; i < filelist.size (); i++)    {                new Qtreewidgetitem (Root, Qstringlist () <<filelist.at (i). FileName ());        Leaf->setflags (leaf->flags () |  qt::itemiseditable);          Root-addChild (leaf);    }

3. Click on the Item event

　

Connect (treewidget,signal (itemclicked (qtreewidgetitem*,intThis, SLOT (Checkself ( qtreewidgetitem*,int))); // detect click events, signal slot mechanism

4, Checkself (qtreewidgetitem*,int); The function is the response function after the click. In the private slot: under the Declaration (the specific implementation here is not posted)

5. Right-click popup menu

Connect (treewidget,signal (customcontextmenurequested (constThis, SLOT (Popmenu (const (qpoint&))); // Detect right mouse button

6, pop-up menu response function Popmenu (const qpoint&)

voidLWD::p Opmenu (Constqpoint&) {Qtreewidgetitem* Curitem=treewidget->currentitem ();//Gets the node that is currently clicked    if(Curitem==null)return;//In this case, the right-hand position is not in the range of TreeItem, that is, right-clicking in a blank positionQString wellname = Curitem->text (0); if(Wellname! ="Wells") {qaction Deletewell (qstring::fromlocal8bit ("& Delete the Well"), This);//Delete a wellQaction Renamewell (QString:: Fromlocal8bit ("& Renaming Wells"), This);//Rename well//Delete the item on the interfaceConnect (&deletewell, SIGNAL (triggered ()), This, SLOT (DeleteItem ())); Connect (&renamewell,signal (triggered ()), This, SLOT (Renamewell ()));        Qpoint POS;        Qmenu menu (Ui.treewidget); Menu.addaction (&Deletewell); Menu.addaction (&Renamewell);  Menu.exec (qcursor::p OS ()); //display at current mouse position            }}

7, DeleteItem ()

voidLWD::d Eleteitem () {root->removechild (treewidget->CurrentItem ()); if(MyW! =NULL) {MyW-setParent (NULL); Ui.verticallayout_4-Removewidget (MyW); }    //Delete well data filesQString Dirpath =".. /data1/"; Dirpath.append (Treewidget->currentitem ()->text (0)); Dirpath.append ("/"); DeleteDirectory (Dirpath);//implemented in the following}BOOLLWD::D eletedirectory (ConstQString &path) {    if(Path.isempty ())return false;    Qdir dir (path); if(!dir.exists ())return true; Dir.setfilter (Qdir::allentries|Qdir::nodotanddotdot); Qfileinfolist fileList=dir.entryinfolist (); foreach(Qfileinfo fi, fileList) {if(Fi.isfile ()) Fi.dir (). Remove (Fi.filename ()); Elsedeletedirectory (Fi.absolutefilepath ()); }        returnDir.rmpath (Dir.absolutepath ());}

8, Renamewell ()

voidLwd::renamewell () {prename= Treewidget->currentitem ()->text (0); Prepath=".. /data1/";    Prepath.append (Prename); Ui.treewidget->edititem (ui.treewidget->CurrentItem ()); //T to determine the modified name by monitoring the ItemChanged event!!!! Connect (treewidget,signal (itemchanged (Qtreewidgetitem *,int)), This, SLOT (namechanged (qtreewidgetitem*  ))); }voidLwd::namechanged (qtreewidgetitem*Item) {    //Rename a folder firstQString newName = Treewidget->currentitem ()->text (0); QString NewPath=".. /data1/";    Newpath.append (NewName);    Qfile::rename (Prepath,newpath); Prepath= Newpath.append ("/");    Prepath.append (Prename); Prepath.append (". txt"); //Renaming a file after the wellbore trajectory has been processedNewpath.append ("/");    Newpath.append (NewName); Newpath.append (". txt"); Qfile::rename (Prepath,newpath);}

QT5 Qtreewidget Implementation Click on the item event and the right-click menu to delete item and rename item