在布局中添加向前和向后按钮

Question

我有一个水平布局，其中我添加了一个组框。组框使用QSplitter分割并包含QListWidget和QTextBrowser。我想在窗口的右下角添加两个按钮来在QTextBrowser内导航。我在布局中添加了两个按钮，但无法将其添加到右下角。这里是我的代码：

_groupBox = new QGroupBox(); 
    _groupBox->setTitle("Config Help System"); 
    _verticalLayout = new QVBoxLayout(_groupBox); 
    this->setLayout(_verticalLayout); 
    _splitter = new QSplitter(_groupBox); 
    _splitter->setOrientation(Qt::Horizontal); 

    _list = new QListWidget(_splitter); 
    QListWidgetItem *item1 = new QListWidgetItem; 
    item1->setText("About Config Tool"); 
    _list->insertItem(0, item1); 
    QListWidgetItem *item2 = new QListWidgetItem; 
    item2->setText("Configuration Help"); 
    _list->insertItem(1, item2); 
    _list->setSelectionMode(QAbstractItemView::SingleSelection); 
    _splitter->addWidget(_list); 

    _helpBrowser = new QTextBrowser(_splitter); 
    _homeButton = new QPushButton(tr("&Home"), this); 
    _backButton = new QPushButton(tr("&Back"), this); 
    _closeButton = new QPushButton(tr("&Close"), this); 

    QHBoxLayout *buttonLayout = new QHBoxLayout(this); 
    buttonLayout->addWidget(_homeButton); 
    buttonLayout->addWidget(_backButton); 
    buttonLayout->addStretch(1); 
    buttonLayout->addWidget(_closeButton) 

    _splitter->addWidget(_helpBrowser); 
    _splitter->setStretchFactor(1,1); 

    _verticalLayout->addWidget(_splitter); 
    this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); 
    this->resize(1000,600); 

我试过了拉伸因子来调整按钮出现在分离器的右下角。任何人都可以帮我一下吗？

Answer 1

试试这个（代码略有不同，因为我想在我的计算机上运行它）：

QWidget *www = new QWidget; 
QGroupBox* _groupBox = new QGroupBox(); 
_groupBox->setTitle("Config Help System"); 
QVBoxLayout *_verticalLayout = new QVBoxLayout(_groupBox); 
www->setLayout(_verticalLayout); 
QSplitter *_splitter = new QSplitter(_groupBox); 
_splitter->setOrientation(Qt::Horizontal); 

QListWidget *_list = new QListWidget(_splitter); 
QListWidgetItem *item1 = new QListWidgetItem; 
item1->setText("About Config Tool"); 
_list->insertItem(0, item1); 
QListWidgetItem *item2 = new QListWidgetItem; 
item2->setText("Configuration Help"); 
_list->insertItem(1, item2); 
_list->setSelectionMode(QAbstractItemView::SingleSelection); 
_splitter->addWidget(_list); 

QTextBrowser *_helpBrowser = new QTextBrowser(_splitter); 
QPushButton* _homeButton = new QPushButton("home"); 
QPushButton* _backButton = new QPushButton("back"); 
QPushButton *_closeButton = new QPushButton("close"); 

QHBoxLayout *buttonLayout = new QHBoxLayout(this); 
buttonLayout->addWidget(_closeButton);//new 
buttonLayout->addStretch(1); 
buttonLayout->addWidget(_homeButton);//new 
buttonLayout->addWidget(_backButton);//new 


_splitter->addWidget(_helpBrowser); 
_splitter->setStretchFactor(1,1); 

_verticalLayout->addWidget(_splitter); 

_verticalLayout->addLayout(buttonLayout);//new 

www->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); 
www->resize(1000,600); 
www->show(); 

结果：

编辑：

#include <QGroupBox> 
#include <QListWidget> 
#include <QTextBrowser> 
#include <QListWidgetItem>//do different includes to use my code inside main 

//... 

QHBoxLayout *buttonLayout = new QHBoxLayout;//just remove the parent