Summary of Qtreewidget and Qtreewidgetitem usage

Qtreewidgetitem::addchild (qtreewidgetitem*)//For adding child nodes to the root node

Qtreewidget::setcolumncount; The number of columns used to set the columns in the table, with the corresponding display in the header.

Qtreewidget::setheaderhidden (); Hide table Header

Qtreewidgetitem::setsortingenabled (BOOL)//Can be used to set whether it can be sorted, when True, click on the table header, will automatically sort

Openpersistenteditor and Closepersistenteditor//used to control whether an item can be edited

Qtreewidgetitem * Qtreewidget::currentitem ()//const returns the current item pointer,

int Qtreewidget::currentcolumn ()//const put back the column number of the current item

Qtreewidgetitem * Qtreewidget::itemat (int x, int y) const Returns the item pointer at the given position

Qtreewidgetitem * Qtreewidget::itembelow (const QTREEWIDGETITEM * Item) const//Returns the item specified below item

Qtreewidgetitem * Qtreewidget::itemabove (const QTREEWIDGETITEM * Item) const//Returns the specified item above item

When looking for item, Qlistwidget and Qtablewidget have multiple find matching patterns.

Qlist<qtreewidgetitem *> qtreewidget::finditems (const QString & text, qt::matchflags flags, int column = 0) c Onst

Show hidden columns:

Setsectionhidden (int, bool); Issectionhidden (int);

Add delete top layer by:

Addtoplevelitem (qtreewidgetitem*);

Taketopleveltem (int);

Toplevelitem (int); Return

Toplevelitemcount ();

To add a delete sub-layer:

AddChild (qtreewidgetitem*);

Addchildren (const qlist<qtreewidgetitem*>&);

Takechild (int);

Takechildren ();

Child (int)//return

ChildCount ();

Sort

Treewidget->setsortingenabled (TRUE);

Treewidget->header ()->setsortindicatorshown (true);

Treewidget->header ()->setsortindicator (0, Qt::ascendingorder);

To customize, use the signal.

Connect (Treewidget->header (), SIGNAL (sectionclicked (int)), this, SLOT (sectionclickedslot (int)));

Two ways to add a table header

Method One:

Qstringlist header;

header<< "Ecjtu" << "CERT";

Treewidget->setheaderlabels (header); Set up the table header

Method Two:

Qstringlist header;

header<< "Ecjtu" << "CERT";

Qtreewidgetitem *head=new Qtreewidgetitem ((qtreewidget*) 0,header);

Treewidget->setheaderitem (head);

Initialized with basic use:

This->setmousetracking (TRUE);

This->setrootisdecorated (FALSE);

This->setselectionmode (qabstractitemview::extendedselection);

This->setstylesheet ("qtreewidget::item{height:25px}"); Set the line width and I can't find the interface provided setstylesheet very powerful suggestions to see

This->setcolumnwidth (0, 100); Set column widths

This->setcolumncount (2);

Qstringlist lists;

Lists << "NO" << "name";

This->setheaderlabels (lists);

for (int i=0;i<10;i++)

{

Qstringlist ContentList;

ContentList << QString ("00%1"). Arg (i) << "boy";

Qtreewidgetitem *pnewitem = new Qtreewidgetitem (this, contentlist); Increase

Pnewitem->setbackgroundcolor (0, Qcolor (150,0,0));

Pnewitem->setfont (0, Qfont ());

}

Pnewitemroot->setexpanded (TRUE); Expand Child Items

Advanced:

Add checkbox, Icon

Pnewitem->setflags (qt::itemisselectable | qt::itemisusercheckable | qt::itemisenabled);

Pnewitem->setcheckstate (0, qt::unchecked);

Pnewitem->seticon (int, qicon);

Put some QT controls on the item, such as Qspinbox,qcombobox,qpushbutton, etc.

This->setitemwidget (Pnewitem, 0, New Qspinbox ());

Getting the qrect of an item can sometimes be useful, such as thumbnail images:

Qrect rect = This->visualitemrect (qtreewidgetitem*);

Right-click menu rewrite

Contextmenuevent (Qcontextmenuevent * event), or use signal itempressed (qtreewidgetitem*, int);

The right operation, can be initialized with Qlabel or Qtreewidgetitem to the opponent,

Hide Header

Header ()->hide ();

M_pheaderview->setclickable (TRUE); can emit sectionclicked (int) signals, can be a menu,

M_pheaderview->setmovable (TRUE);

M_pheaderview->setresizemode (0, qheaderview::fixed); Fixed column width

M_pheaderview->setdefaultsectionsize (100); Default

Sort

Treewidget->setsortingenabled (TRUE);

Treewidget->header ()->setsortindicatorshown (true);

Treewidget->header ()->setsortindicator (0, Qt::ascendingorder);

Treewidget->header ()->setsectionhidden (1, true);//Hide Column

To customize, use the signal.

Connect (Treewidget->header (), SIGNAL (sectionclicked (int)), this, SLOT (sectionclickedslot (int)));