1, QListView list view
1. QListView component introduction
QListView list view, inherited from QAbstractItemView. QListView is a model-based list / icon view without displaying header and table box, which provides a more flexible way for Qt's model / view structure.
2. QListView component properties
QListView component property settings:
A. Name: the name in the source code corresponding to the component.
B. Font: set the font in the view.
C. batchSize: if layoutMode is set to Batched, this attribute saves the specifications of batch processing.
D. layoutModel: the layout mode of the project.
E. Modelcolumn: the class visible in the model. By default, it is set to 0 to indicate that the first column in the model is visible.
F. viewModel: saves the view model of the ListView component.
3. Common member functions of QListView component
QListView(QWidget *parent = 0)
Construct a ListView whose parent object is parent.
void currentChanged(const QModelIndex ¤t，const QModelIndex &previous) [virtual protected]
Locate current as the current project and previous as the previous project.
void dataChanged(const QModelIndex &topLeft，const QModelIndex &bottomRight) [virtual protected]
Change the items in the model from topLeft to bottomRight.
QModelIndex indexAt(const QPoint &p) const [virtual]
Returns the model index of the item at coordinate point p.
void rowsInserted(const QModelIndex &parent，int start，int end) [virtual protected]
Insert a new line. The parent of the new line is parent. All items from start to end.
QModelIndexList selectedIndexes() const[virtual protected]
Returns the model index of all selected non hidden items.
void setViewMode(ViewMode mode)
Set the display mode, including QListView::ListMode, QListView::IconMode, and the default ListMode
void setLayoutMode(LayoutMode mode)
Set the layout mode, QListView::SinglePass, QListView::Batched
virtual void QAbstractItemView::setModel(QAbstractItemModel * model)
Set the model associated with the view
4. QListView instance
Widget.h documents:
#ifndef WIDGET_H
#define WIDGET_H
#include <QtGui/QWidget>
#include <QStringListModel>
#include <QListView>
#include <QDialogButtonBox>
#include <QPushButton>
#include <QVBoxLayout>
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(const QStringList &leaders, QWidget *parent = 0);
~Widget();
private:
QStringListModel *model;
QListView *listView;
QDialogButtonBox *buttonBox;
private slots:
void onDelete();
void onInsert();
};
#endif // WIDGET_HWidget.cpp file:
#include "widget.h"
Widget::Widget(const QStringList &leaders, QWidget *parent)
: QWidget(parent)
{
model = new QStringListModel(this);
model->setStringList(leaders);
listView = new QListView;
listView->setModel(model);
listView->setEditTriggers(QAbstractItemView::AnyKeyPressed
| QAbstractItemView::DoubleClicked);
buttonBox = new QDialogButtonBox;
QPushButton *insertButton = buttonBox->addButton(
tr("&Insert"),QDialogButtonBox::ActionRole);
QPushButton *deleteButton = buttonBox->addButton(
tr("&Delete"), QDialogButtonBox::ActionRole);
connect(insertButton, SIGNAL(clicked()), this, SLOT(onInsert()));
connect(deleteButton, SIGNAL(clicked()), this, SLOT(onDelete()));
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(listView);
layout->addWidget(buttonBox);
setLayout(layout);
setWindowTitle(tr("QStringListModel"));
}
Widget::~Widget()
{
}
void Widget::onDelete()
{
model->removeRows(listView->currentIndex().row(), 1);
}
void Widget::onInsert()
{
int row = listView->currentIndex().row();
model->insertRows(row, 1);
QModelIndex index = model->index(row);
listView->setCurrentIndex(index);
listView->edit(index);
}Main.cpp file:
#include <QtGui/QApplication>
#include "widget.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QStringList list;
list << QObject::tr("xianziyu")
<< QObject::tr("yangwangming")
<< QObject::tr("yinshixin")
<< QObject::tr("baichengshuang")
<< QObject::tr("zhangzurui");
Widget w(list);
w.show();
return a.exec();
}2, QTreeView tree view
1. Introduction to QTreeView component
QTreeView tree view, inherited from QAbstractItemView, is a model-based list / icon view and a part of Qt model / view framework.
2. QTreeView component properties
QTreeView component property setting options:
A. Name: the name in the source code corresponding to the component.
B. Font: set the font of all text in the component.
C. sortingEnable: whether items are sorted.
3. Common member functions of QTreeView component
QTreeView(QWidget *parent = 0)
Construct a TreeView whose parent object is parent.
void collapse(const QModena &index) [slot]
Collapses items whose model index is index
void collapseAll() [slot]
Collapse all items
int columnAt(int x) const
Returns the column at the x coordinate.
void columnCountChanged(int oldCount，int newCount) [protected slot]
Notify the number of columns in the tree view to change from oldCount to newCount.
void currentChanged(const QModelIndex ¤t，const QModelIndex &previous)[virtual protected]
Set current as the current project and previous as the previous current project
void dataChanged(const QModelIndex &topLeft，const QModelIndex &bottomRight)[virtual]
Change the items in the model from topLeft to bottomRight.
void drawBranches(QPainter *painter，const QRect &rect，const QModelIndex &index) const
On the same line of the item index, draw the rect rectangular branch specified with painter.
void drawRow(QPainter *painter，const QStyleOptionViewItem &option，
const QModelIndex &index) const [virtual protected]Draw a new line with painter. The new line contains the items whose model index is index. option is how to display the items.
void QTreeView::drawTree(QPainter *painter，const QRegion& ion)const [protected]
Using painter to draw the tree in the region
void expand(const QModelIndex &index) [slot]
Expand the item whose model index is index.
void expandAll() [slot]
Expand all projects
void expandToDepth(int depth) [slot]
Expand the item in the tree view to depth
QHeaderView *header() const
The tree view of the header is returned
QModelIndex indexAbove(const QModelIndex &index) const
Returns the previous index of the model index
QModelIndex indexAt(const QPoint &point) const [virtual]
Returns the model index of the item at point
QModelIndex indexBelow(const QModelIndex &index) const
Returns the next index of the model index
bool isExpanded(const QModelIndex &index) const
If the item at the index of the model index is expanded, return true; otherwise, return false
void rowsInserted(const QModelIndex &parent，int start，int end) [virtual protected]
Insert a new line whose parent is parent, including all items from start to end.
void rowsRemoved(const QModelIndex &parent，int start，int end) [protected slot]
Delete the line whose parent is parent, including all items from start to end
void selectAll() [virtual]
Set all items to be selected
QModelIndexList selectedIndexes() const [virtual protected]
Returns the model index of all selected and non hidden items
void setHeader(QHeaderView *header)
Set the title of the TreeView to header
void sortByColumn(int column，QT::SortOrder order)
Sort column s by order
4. QTreeView instance
#include <QtGui>
#include <QString>
#include <QTextCodec>
#include <QSplitter>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QSplitter *splitter = new QSplitter;
QDirModel *model = new QDirModel;
//Create data from default directory
QTreeView *tree = new QTreeView(splitter);
tree->setModel(model);
tree->setRootIndex(model->index("d:\\"));
QTextCodec::setCodecForTr(QTextCodec::codecForName("GBK")); //Chinese display
QTextCodec *codec = QTextCodec::codecForLocale();
QString s = codec->toUnicode("catalogue");
splitter->setWindowTitle(s);
splitter->show();
return a.exec();
}3, QTableView table view
1. Introduction to QTableView component
QTableView table view is a table view implementation of model / view structure, which is used to display model items. QTableView provides the standard table provided by QTable class. It is a part of Qt's model / view framework. It is implemented by the interface defined by QAbstractItemView class to enable it to display the data provided by the model derived from QAbstractItemModel class. QTableView can use a custom data model to display content.
2. QTableView component properties
QTableView component property setting options:
A. Name: the name of the control in the corresponding source code
B. Font: set the font inside the table
C. Corner button enabled: is the button in the upper left corner useful
D. gridStyle: format of table
E. showGrid: whether to display the grid. If the value is true, it will be displayed; otherwise, it will not be displayed
F. sortingEnabled: whether to sort items
3. QTableView component common member functions
QTableView(QWidget *parent = 0)
Construct a TableView whose parent object is parent
void clearSpans()
Deletes the span of all rows and columns in the TableView
int columnAt(int x) const
Returns the column at coordinate x, or - 1 if there is no item at coordinate
int columnSpan(int row，intcolumn) const
Returns the row span at row and column
void currentChanged(const QModelIndex& t，const QModelIndex &previous)[virtual protected]
Specify current as the current project and previous as the previous project
QHeaderView *horizontalHeader() const
Returns the horizontal title of the TableView
QModelIndex indexAt(const QPoint *pos) const [virtual]
Returns the model index of the item at the point pos
int rowAt(int y)const
Returns the row at coordinate y, or - 1 if there is no item at coordinate
int rowSpan(int row，int column) const
Returns the column span at row, column, and column
void selectcolumn(int column) [slot]
Set column as selected
void selectRow(int row) [slot]
Set row as selected
QModelIndexList selectedIndexes() const [virtual protected]
Returns the model index of all selected and non hidden items
void setHorizontalHeader(QHeaderView *header)
Set the horizontal title of TableView to header
void setSpan(int row，int column，int rowSpanCount，int columnCount)
Set row span to rowSpanCount and column span to columnSpanCount at row and column
void setVerticalHeader(QHeaderView *header)
Set the vertical title of TableView to header
void showColumn(int column)[slot]
Show column column
void showRow(int row) [slot]
Show row
QHeaderView *verticalHeader() const
Returns the vertical title of the TableView
4. QTableView instance
#include <QtGui/QApplication>
#include <QTableView>
#include <QStandardItemModel>
#include <QHeaderView>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QStandardItemModel *model = new QStandardItemModel();
model->setColumnCount(2);
model->setHeaderData(0,Qt::Horizontal,QString::fromLocal8Bit("Card number"));
model->setHeaderData(1,Qt::Horizontal,QString::fromLocal8Bit("full name"));
QTableView *tableview = new QTableView();
tableview->setModel(model);
tableview->horizontalHeader()->setDefaultAlignment(Qt::AlignLeft);
tableview->horizontalHeader()->setResizeMode(0,QHeaderView::Fixed);
tableview->horizontalHeader()->setResizeMode(1,QHeaderView::Fixed);
tableview->setColumnWidth(0, 100);
tableview->setColumnWidth(1, 100);
for(int i = 0; i < 100; i++)
{
model->setItem(i,0,new QStandardItem("220161101"));
//Set character color
model->item(i,0)->setForeground(QBrush(QColor(255, 0, 0)));
//Set character position
model->item(i,0)->setTextAlignment(Qt::AlignCenter);
model->setItem(i,1,new QStandardItem(QString::fromLocal8Bit("ha-ha")))
}
tableview->show();
return a.exec();
}4, QColumnView column view
1. Introduction to qccolumnview component
Qccolumnview column view provides a column view implementation of model / view. It is a part of the model / view framework and provides multi-level views (a menu will appear next to each option to display all its sub items).
2. QColumnView component properties
QColumnView component property setting options:
A. Name: the name in the corresponding source code of the component
B. Font: set the font inside the table
3. QColumnView component common member functions
QColumnView(QWidget *parent = 0)
Construct a ColumnView whose parent object is parent
QAbstractItemView * createColumn(const QModelIndex *index)[virtual protected]
Index is the root model index of the view and returns the new view
void currentChanged(const QModelIndex&t，const QModelIndex &previous)[virtual protected]
Specify current as the current project and previous as the previous current project
QModelIndex indexAt(cosnt QPoint &point) const [virtual]
Returns the index model of the item at the point pos
QWidget *previewWidget() const
Returns the preview component, or 0 if none
void rowsInserted(const QModelIndex &parent，int start，int end) [virtual protected]
Insert a new line whose parent is parent, including all items from start to end
void selectAll() [virtual]
Set all items in this ColumnView as selected
void setPreviewWidget(QWidget *widget)
Set the widget as the preview component of the columnView.
4. Qccolumnview instance
#include <QtGui/QApplication>
#include <QMainWindow>
#include <QColumnView>
#include <QStandardItemModel>
#include <QStandardItem>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow win;
QColumnView *cview = new QColumnView(&win);
win.setCentralWidget(cview);
QStandardItemModel model;
for (int groupnum = 0; groupnum < 3 ; ++groupnum)
{
QStandardItem *group = new QStandardItem(QString("Group %1").arg(groupnum));
for (int personnum = 0; personnum < 5 ; ++personnum)
{
QStandardItem *child = new QStandardItem(QString("Person %1 (group %2)").arg(personnum).arg(groupnum));
group->appendRow(child);
}
model.appendRow(group);
}
cview->setModel(&model);
win.show();
return app.exec();
}