Qtable Widget QT control of

https://www.cnblogs.com/retry/p/9329397.html

table of Contents

• Qtable Widget QT control of
  • 1, form the basis of property
  • 2, table editing properties
  • 3, attributes selected cell
  • 3, display and hide the header
  • 4, cell font settings
  • 5, disposed within the cell alignment of text
  • 6, merge cells
  • 7, a line width
  • 8, other examples provided

Qtable Widget QT control of

1, form the basis of property

• Form Definition

//方法1：
QTableWidget *tableWidget = new QTableWidget(10,5); // 构造了一个QTableWidget的对象，并且设置为10行，5列 
//方法2：

QTableWidget *tableWidget = new QTableWidget;

tableWidget-> setRowCount ( 10 ); // Set the number of lines 10

tableWidget-> setColumnCount ( 5 ); // Set the number of columns 5

• Set header

QStringList header; 

header<<“Month”<<“Description”;

tableWidget->setHorizontalHeaderLabels(header);

• Setting the table of contents

tableWidget->setItem(0,0,new QTableWidgetItem("Jan")); 
tableWidget->show(); 

2, table editing properties

• By default, the form of the characters can be changed, such as double-click a cell, you can modify the original content, if you want to ban the operation of the user, so that the table read-only users, but also can be set.

 原型：tableWidget->setEditTriggers(QAbstractItemView::EditTrigger);

QAbstractItemView.EditTrigger multiple parameters, QAbstractItemView.NoEditTriggers is a QAbstractItemView.EditTrigger enumeration.

parameter	XX	XX
QAbstractItemView.NoEditTriggers	0	Table of contents can not be modified
QAbstractItemView.CurrentChanged	1	Any modifications to the cell at all times
QAbstractItemView.DoubleClicked	2	Double-click cell
QAbstractItemView.SelectedClicked	4	Click the selected content
QAbstractItemView.CurrentChanged	8	Any modifications to the cell at all times
QAbstractItemView.AnyKeyPressed	16	Double-click cell
QAbstractItemView.AllEditTriggers	31	Double-click cell

3, attributes selected cell

• Select the entire row

原型： tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);  //整行选中的方式

parameter	meaning
QAbstractItemView.SelectItems	Select a single cell
QAbstractItemView.SelectRows	Select a row
QAbstractItemView.SelectColumns	Select one

• And select a single set of a plurality of selected

 原型：tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection); //设置为可以选中多个目标

parameter	meaning
QAbstractItemView.NoSelection	You can not choose
QAbstractItemView.SingleSelection	Select a single target
QAbstractItemView.MultiSelection	Select multiple targets

3, display and hide the header

• Horizontal or vertical header for methods, may be provided to hide / show in the following manner.

 //注意：需要 #include <QHeaderView>
 tableWidget->verticalHeader()->setVisible(false);   //隐藏列表头
 tableWidget->horizontalHeader()->setVisible(false); //隐藏行表头

4, cell font settings

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"));

5, disposed within the cell alignment of text

Use newItem.setTextAlignment () function is provided, parameters of the function as the alignment of the cell, and a character input sequence from left and right, or from right to left with, if both should be set, as long as Qt.AlignHCenter | to Qt.AlignVCenter way.

//方法
ui->tableWidget->item(i, 2)->setTextAlignment(Qt::AlignCenter);

//方法
QTableWidgetItem *t_test = new QTableWidgetItem（xList）；
t_test->setTextAlignment(Qt::AlignCenter);

6, merge cells

tableWidget->setSpan(0, 0, 3, 1)  //# 其参数为： 要改变单元格的  1行数  2列数  要合并的  3行数  4列数

7, a line width

• Specifies the width of the ranks

//方法一：
    tableWidget->setColumnWidth(3,200);
    tableWidget->setRowHeight(3,60);
//方法二：    
  ui->tableWidget->horizontalHeader()->setResizeMode(QHeaderView::fix); //指定列宽
 ui->tableWidget->verticalHeader()->setResizeMode(QHeaderView::fix);  //制定行高

• Automatically adjust the width of the ranks

//根据内容自动调整所有行的行高

//方法一：
tableWidget->resizeColumnsToContents();
tableWidget->resizeRowsToContents();

@ Method two:
ui-> tableWidget-> The horizontalHeader () -> setResizeMode (QHeaderView :: the Stretch); adaptive column width
ui-> tableWidget-> verticalHeader () - > setResizeMode (QHeaderView :: Stretch); adaptive line high

// content automatically adjusted according to a row line high
tableWidget-> resizeColumnsToContents ( 2 ); // 2 rows
tableWidget-> resizeRowsToContents ( 2 );

Alternative forms // effects:
the table-> The horizontalHeader () -> setStretchLastSection ( to true ); // other columns to keep the default width, stretched a final fill.

8, other examples provided

int rowIndex = m_pAttrbuteList->rowCount();
 tableWidget->setRowCount(rowIndex + 1);//总行数增加1

tableWidget-> setRowHeight (rowIndex, 24 ); the height // set row

---

QTableWidget *table = new QTableWIdget(this);

the table-> setColumnCount ( . 5 ); // number of columns

the table-> setRowCount ( . 3 ); set // the number of rows /

/ Set Column Name /

QStringList headers;

<< Headers "column name 1" << "column name 2" << "column name 3" ;

table->setHorizontalHeaderLabels(headers);

/ To add the contents of the cell /

void addItemContent(int row, int column, QString content)

{

  QTableWidgetItem *item = <span class="hljs-keyword">new</span> QTableWidgetItem (content);

  table-&gt;setItem(row, column, item);

}

/ To increase cell icon /

* Item = QTableWidgetItem new new QTableWidgetItem (QIcon ( "myImage.jpg" ), NULL ); // add only icons, no strings

* Item = QTableWidgetItem new new QTableWidgetItem (QIcon ( "myImage.jpg" ), myString); // adding icons and strings

table->setItem(row, column, item);

/ Insert a row /

int row = table->rowCount();

table->insertRow(row);

/ Insert a /

int column = table->columnCount();

table->insertColumn(column);

// make the adaptive line width of the head, and finally a blank portion will be filled with

table->horizontalHeader()->setStretchLastSection(true);

// make the adaptive line head width, all columns filled average blank portion

table->horizontalHeader()->setResizeMode(QHeaderView::Strtch);

// make the adaptive line height, line if many words, the height of the line would not have been reduced, when a certain value will automatically generate a QScrollBar

table->verticalHeader()->setResizeMode(QHeaderView::Strtch);

// Set click to select a row

table->setSelectionBehuavior(QAbstractItemView::SelectRows);

// Set each line is not editable

table->setEditTriggers(QAbstractItemView::NoEditTriggers);

// set can only select a row, you can not select multiple rows

table->setSelectionMode(QAbstractItemView::SingleSelection);

/ Removing the line number of each line /

QHeaderView *headerView = table->verticalHeader();

headerView->setHidden(true);

/ Setting allows a cell or a row select /

Select the cell: table-> setCurrentCell (row, column, QItemSelectionModel :: Select);

Select a row: table-> setCurrentCell (row, QItemSelectionModel :: Select); (note that there is no value listed here)

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