Summary of usage of Qtablewidget

In the days of using QT not much, already two times used to qtablewidget this control, also slowly habit and like on it. When you use Qtablewidget again, it's not as confusing as when you first started using it. Uh, uh. Now come to summarize my experience with qtablewidget ... (*^__^*) hehe ...

Use also looked at a lot of information, in this thank the predecessors of the intentions to summarize and share!

1.QTableWidget cannot change with the size of the main window in MainWindow?

Workaround: Add a layout outside the table.

Code: Tablewidget = new Qtablewidget;

Tablewidget->setobjectname (Qstring::fromutf8 ("Tablewidget"));

Qvboxlayout *verticallayout;

Verticallayout->addwidget (Tablewidget);

2. Change the table to prohibit editing:

Tablewidget->setedittriggers (qabstractitemview::noedittriggers);

(parameter meaning: qabstractitemview.noedittriggers--cannot modify the contents of the table

qabstractitemview.currentchanged--can modify cells at any time

qabstractitemview.doubleclicked--Double-click a cell

qabstractitemview.selectedclicked--Click the selected content

qabstractitemview.editkeypressed--

qabstractitemview.anykeypressed--can be modified by pressing any key

qabstractitemview.alledittriggers--the above conditions are all included)

3. Set table for whole row selection

Tablewidget->setselectionbehavior (qabstractitemview::selectrows); The way the whole row is selected

(Parameter meaning: abstractitemview.selectitems--Select a single cell

qabstractitemview.selectrows--Select a row

qabstractitemview.selectcolumns--Select a column)

4. Single-checked and multiple-checked settings:

Tablewidget->setselectionmode (qabstractitemview::extendedselection); Set to multiple targets can be selected

(parameter meaning: qabstractitemview.noselection--cannot select

qabstractitemview.singleselection--Select a single target

qabstractitemview.multiselection--Multiple targets selected

Qabstractitemview.extendedselection/qabstractitemview.contiguousselection The difference is not obvious, the main function is the normal case is the radio, but press CTRL or SHIFT key, Multiple options available)

5. Display and hide of table header

For the table header of a horizontal or vertical method, you can hide/show the settings in the following ways:

Tablewidget->verticalheader ()->setvisible (false); Hide List Header

Tablewidget->horizontalheader ()->setvisible (false); Hide a row table header

Note: #include <QHeaderView> required

6. Set the font and color of the header text

Qtablewidgetitem *columnheaderitem0 = tablewidget->horizontalheaderitem (0); Gets the item object for the horizontal heading of the table header

Columnheaderitem0->setfont (Qfont ("Helvetica")); Set font

Columnheaderitem0->setbackgroundcolor (Qcolor (0,60,10)); Set cell background color

Columnheaderitem0->settextcolor (Qcolor (200,111,30)); Set Text color

Note: #include <QHeaderView> required

7. Add a control to the cell:

Qcombobox *combox = new Qcombobox ();

Combox->additem ("Y");

Combox->additem ("N");

Tablewidget->setcellwidget (0,2,combox);

8. Add a picture to the cell:

Tablewidget->setitem (row, 0, New Qtablewidgetitem (Qicon (":/new/images/kingdemo.ico"), tr ("")));

9 Set the cell font color, background color, and font character:

Qtablewidgetitem *item = new Qtablewidgetitem ("Apple");

Item->setbackgroundcolor (Qcolor (0,60,10));

Item->settextcolor (Qcolor (200,111,100));

Item->setfont (Qfont ("Helvetica"));

Tablewidget->setitem (0,3,item);

Another: If you need to use this font for all cells, you can use Tablewidget->setfont (Qfont ("Helvetica"));

10. Set the alignment of text within a cell

The horizontal alignment is as follows:

Constant Value Description

Qt.alignleft 0x0001 aligns with the left edge.

Qt.alignright 0x0002 aligns with the right edge.

Qt.alignhcenter 0x0004 Centers Horizontally in the available space.

Qt.alignjustify 0x0008 justifies the text in the available space.

Vertical alignment:

Constant Value Description

Qt.aligntop 0x0020 aligns with the top.

Qt.alignbottom 0x0040 aligns with the bottom.

Qt.alignvcenter 0x0080 Centers vertically in the available space.

If both are set, just use Qt.alignhcenter | Qt.alignvcenter the way you can

11. Merge Cells:

Tablewidget->setspan (0, 0, 3, 1) # Its parameters are: To change the cell 1 rows, 2 columns, the number of 3 rows to be merged, 4 columns

12. Set the size of the cell

First, you can specify the size of a row or column

Tablewidget->setcolumnwidth (3,200);

Tablewidget->setrowheight (3,60);

You can also set the row and column size to match the content

Tablewidget->resizecolumnstocontents ();

Tablewidget->resizerowstocontents ();

13. Get the contents of the clicked cell

By implementing the slot function of the itemclicked (Qtablewidgetitem *) signal, you can get the cell pointer that the mouse clicked on to get the text information

Connect (tablewidget,signal (itemdoubleclicked (Qtreewidgetitem*,int)), This,slot (GetItem (Qtreewidgetitem*,int)));

Binds the itemclicked signal to the function getitem

14.QTableWidget to adjust the table row width mainly involves the following functions

Tablewidget->horizontalheader ()->setresizemode (qheaderview::stretch);//Make the column fully populated and split equally

Tablewidget->verticalheader ()->setresizemode (qheaderview::stretch);//Line Adaptive width

Tablewidget->resizecolumnstocontents (); Adjust column widths based on content

tablewidget->resizecolumntocontents (int col);//automatically adjusts the given column width based on content

Tablewidget->horizontalheader ()->setresizemode//sets the given column to the given pattern

Main modes are stretch and fixed

15. Add Table Header content:

Method One:

Qstringlist header;

header<< "" <<tr ("1") <<tr ("2") <<tr ("3") <<tr ("4") <<tr ("5");

Method Two:

Tablewidget->sethorizontalheaderlabels (Qstringlist () << tr ("1") <<tr ("2") <<tr ("3") <<tr ("4) <<tr (" 5 "));

16. Clear:

Tablewidget->clear ();//Clears all visible data (including the header), and the row is still

Tablewidget->clearcontents ();//Clears only the data in the table and does not clear the header contents

Tablewidget->setrowcount (0);//Lianxing also clear off

15. Some bits and pieces of Knowledge Point code:

int row = Tablewidget->rowcount ();//Gets the current Total row count in the table

Tablewidget->setrowcount (row+1);//Add a row

Tablewidget->removerow (row);//clear the existing ranks

Int row1 = Tablewidget->currentitem ()->row ();//Current selected row

BOOL focus = tablewidget->isitemselected (Tablewidget->currentitem ());//Determines whether a row is selected

QString proname = Tablewidget->item (row, col)->text ();//Get a lattice of content

Setshowgrid (TRUE);//Show Table lines

Verticalheader ()->setvisible (false);//Hide Left Vertical

Qheaderview *headerview = Horizontalheader ();

Headerview->setmovable (false);//Remove the movement of the table head

Headerview->resizesection (0,284);//Set the first column width

Headerview->resizesection (1,127);//Set the second column width

Headerview->setresizemode (qheaderview::fixed);//list cannot be moved

Headerview->setclickable (false);//do not respond to mouse clicks

Setedittriggers (qtablewidget::noedittriggers);//cannot edit

Setselectionbehavior (qtablewidget::selectrows);//Select one row at a time

Setselectionmode (qabstractitemview::singleselection);//Only single selection

/*qscrollbar *scrollbar = Horizontalscrollbar ();

Scrollbar->hide (); */

Sethorizontalscrollbarpolicy (Qt::scrollbaralwaysoff);//Remove horizontal scroll bar

Setverticalscrollmode (Qabstractitemview::scrollperitem);//The vertical scroll bar moves by item

Setautoscroll (false);//Remove Auto-scrolling

17. Sort:

Tablewidget->sortbycolumn (0, Qt::ascendingorder);//As the name implies, the function means to arrange a column in ascending/descending order

Yes, yes! Think of and use only so many temporarily, and then fill ... (Refer to some of the seniors, don't mind Oh, (*^__^*))

http://blog.csdn.net/mingxia_sui/article/details/7681863

Summary of usage of Qtablewidget