使用预定义模型 QStringListModel+QStringlist例子

使用预定义模型 QStringListModel例子

使用预定义模型 QStringListModel例子



源代码如下

Main.cpp



Cpp代码

#include <QApplication>



#include "teamleadersdialog.h"



int main(int argc, char *argv[])

{

QApplication app(argc, argv);



//字符串数组

QStringList leaders;

leaders << "Stooge Viller" << "Littleface" << "B-B Eyes"

<< "Pruneface" << "Mrs. Pruneface" << "The Brow"

<< "Vitamin Flintheart" << "Flattop Sr." << "Shakey"

<< "Breathless Mahoney" << "Mumbles" << "Shoulders"

<< "Sketch Paree";



//对话框

TeamLeadersDialog dialog(leaders);

dialog.show();



return app.exec();

}





teamleadersdialog.h



Cpp代码

#ifndef TEAMLEADERSDIALOG_H

#define TEAMLEADERSDIALOG_H



#include <QDialog>



class QDialogButtonBox;

class QListView;

class QStringListModel;



class TeamLeadersDialog : public QDialog

{

Q_OBJECT



public:

//构造函数

TeamLeadersDialog(const QStringList &leaders, QWidget *parent = 0);



QStringList leaders() const;



private slots:

void insert();

void del();



private:

QListView *listView;

QDialogButtonBox *buttonBox;

QStringListModel *model;

};



#endif



teamleadersdialog.cpp



Cpp代码

#include <QtGui>



#include "teamleadersdialog.h"



TeamLeadersDialog::TeamLeadersDialog(const QStringList &leaders,

QWidget *parent)

: QDialog(parent)

{

//创建并组装一个QStringListModel

model = new QStringListModel(this);

model->setStringList(leaders);



//创建一个QListView

listView = new QListView;

//设置模型

listView->setModel(model);

//设置QListView编辑触发器：通过开始输入或者双击进入编辑字符串的状态

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);

buttonBox->addButton(QDialogButtonBox::Ok);

buttonBox->addButton(QDialogButtonBox::Cancel);

//信号槽绑定插入、删除按钮

connect(insertButton, SIGNAL(clicked()), this, SLOT(insert()));

connect(deleteButton, SIGNAL(clicked()), this, SLOT(del()));

//按钮盒的ok和Cancel事件

connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));

connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));



//界面竖直布局listView和buttonBox

QVBoxLayout *mainLayout = new QVBoxLayout;

mainLayout->addWidget(listView);

mainLayout->addWidget(buttonBox);

//设置当前窗口的布局为mainLayout

setLayout(mainLayout);



setWindowTitle(tr("Team Leaders"));

}

//获取当前模型中的内容

QStringList TeamLeadersDialog::leaders() const

{

return model->stringList();

}



void TeamLeadersDialog::insert()

{

//从列表视图得到当前项的行数

int row = listView->currentIndex().row();

//在模型中插入一个新行，并且模型会自动更新列表视图

model->insertRows(row, 1);

//获取当前行在模型中的"模型索引"

QModelIndex index = model->index(row);

//设置刚刚插入的空白行为列表视图的当前索引

listView->setCurrentIndex(index);

//设置列表视图在当前行进入编辑状态

listView->edit(index);

}



void TeamLeadersDialog::del()

{

//从目前行开始，共删除1行model数据，并自动更新列表视图

model->removeRows(listView->currentIndex().row(), 1);

}