Qt Widgets——子区域和子窗口

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Qt Widgets——子区域和子窗口

范大脚脚 2017-11-03 17:00:00 浏览1358
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QMdiArea 一般使用于主窗口QMainWindow,用于容纳多个子窗口QMdiSubWindow 

qt creator 3.0的设计师有MdiArea可直接拖入使用。

界面如下,图中灰色框即是个MdiArea,另一图中创建了2个QMdiSubWindow :
代码如下:
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#include "mainwindow.h"  
#include "ui_mainwindow.h"  
#include <QSize>  
MainWindow::MainWindow(QWidget *parent) :  
    QMainWindow(parent),  
    ui(new Ui::MainWindow)  
{  
    ui->setupUi(this);  
    connect(ui->actionNew,SIGNAL(triggered()),this,SLOT(creatNewWin()));//actionNew是通过设计师创建的动作  
  
}  
  
void MainWindow::creatNewWin()  
{  
    mdiWin1=new QMdiSubWindow;  
    mdiWin1->setWindowTitle("未定");  
    ui->mdiArea->addSubWindow(mdiWin1);  
    mdiWin1->resize(QSize(200,200));  
    mdiWin1->show();  
}  
MainWindow::~MainWindow()  
{  
    delete ui;  
}  
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______________________________________________________________________________________________

QMdiArea
公有函数如下:
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    QMdiArea(QWidget * parent = 0)  
    ~QMdiArea()  
  
QMdiSubWindow * addSubWindow(QWidget * widget, Qt::WindowFlags windowFlags = 0)  
void    removeSubWindow(QWidget * widget)  
void    setActivationOrder(WindowOrder order)//设置激活顺序,默认以创建先后激活,槽函数中有调用,枚举值见1  
void    setBackground(const QBrush & background)//设置背景,默认灰色  
void    setDocumentMode(bool enabled)  
void    setOption(AreaOption option, bool on = true)//现只有一个选项,即创建子窗口,窗口不充满这个区域,默认是充满的,枚举值见2  
void    setViewMode(ViewMode mode)//设置视口模式,默认area中很多小窗口,也可以是有tabBar形式的,以下这些设置tab的函数,都需要先开启这个。枚举值见3  
void    setTabPosition(QTabWidget::TabPosition position)//设置tabBar的方位,有东西南北四方位,遵循地理的上北下南左西右东枚举值见4  
void    setTabShape(QTabWidget::TabShape shape)//设置tab的形状,默认长方形,也可以像谷歌浏览器那样,梯形,枚举值见5  
void    setTabsClosable(bool closable)//默认否,设为true时,tab上方形成一个关闭小按钮  
void    setTabsMovable(bool movable)//设置是否可移动,默认false,可移动时,可拖动tab在tabBar上移动,现在的浏览器大多有这样的功能  
  
QList<QMdiSubWindow *>    subWindowList(WindowOrder order = CreationOrder) const  
QMdiSubWindow * currentSubWindow() const  
WindowOrder activationOrder() const  
QBrush  background() const  
bool    documentMode() const  
bool    testOption(AreaOption option) const  
QMdiSubWindow * activeSubWindow() const  
QTabWidget::TabPosition tabPosition() const  
QTabWidget::TabShape    tabShape() const  
bool    tabsClosable() const  
bool    tabsMovable() const  
ViewMode    viewMode() const  
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Public Slots
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void    activateNextSubWindow()  
void    activatePreviousSubWindow()  
void    cascadeSubWindows()  
void    closeActiveSubWindow()  
void    closeAllSubWindows()  
void    setActiveSubWindow(QMdiSubWindow * window)  
void    tileSubWindows()//将所有子窗口在area的可视部分排列整齐  
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Signals
void    subWindowActivated(QMdiSubWindow * window)//切换激活的窗口时发出  
1,enum QMdiArea::WindowOrder
Constant Value Description
QMdiArea::CreationOrder 0 按创建时的先后顺序
QMdiArea::StackingOrder 1 堆叠顺序
QMdiArea::ActivationHistoryOrder 2 按激活历史前后顺序.
2,enum QMdiArea::AreaOption
flags QMdiArea::AreaOptions
Constant Value Description
QMdiArea::DontMaximizeSubWindowOnActivation 0x1 激活时不使它最大化,默认是最大化的
3,QMdiArea::ViewMode
Constant Value Description
QMdiArea::SubWindowView 0 以小窗口形式显示(default).
QMdiArea::TabbedView 1 不仅可小窗口,而且形成tabBar
4,enum QTabWidget::TabPosition
Constant Value Description
QTabWidget::North 0 上方显示
QTabWidget::South 1
QTabWidget::West 2
QTabWidget::East 3
5,enum QTabWidget::TabShape
Constant Value Description
QTabWidget::Rounded 0 字面是圆形,但win7上更像长方形,default
QTabWidget::Triangular 1 字面三角形,说它是梯形更好些
在以上代码中修改,图中是执行tileSubWindows()函数后的结果:
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#include "mainwindow.h"  
#include "ui_mainwindow.h"  
#include <QSize>  
#include <QTabWidget>  
#include <QBrush>  
MainWindow::MainWindow(QWidget *parent) :  
    QMainWindow(parent),  
    ui(new Ui::MainWindow)  
{  
    ui->setupUi(this);  
    QBrush b=QBrush(QColor(30,30,30),Qt::FDiagPattern);  
    ui->mdiArea->setBackground(b);  
    ui->mdiArea->setViewMode(QMdiArea::TabbedView);  
    ui->mdiArea->setTabPosition(QTabWidget::North);  
    ui->mdiArea->setTabsClosable(true);  
    ui->mdiArea->setTabsMovable(true);  
    ui->mdiArea->setTabShape(QTabWidget::Triangular);  
    ui->mdiArea->setOption(QMdiArea::DontMaximizeSubWindowOnActivation);  
  
    connect(ui->actionNew,SIGNAL(triggered()),this,SLOT(creatNewWin()));  
  
}  
  
void MainWindow::creatNewWin()  
{  
    mdiWin1=new QMdiSubWindow;  
    mdiWin1->setWindowTitle("未定");  
    ui->mdiArea->addSubWindow(mdiWin1);  
    mdiWin1->resize(QSize(200,200));  
    mdiWin1->show();  
}  
MainWindow::~MainWindow()  
{  
    delete ui;  
}  
  
void MainWindow::on_pushButton_clicked()  
{  
    ui->mdiArea->tileSubWindows();  
}  
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______________________________________________________________________________________________

QMdiSubWindow
函数都比较简单,列出如下:
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   QMdiSubWindow(QWidget * parent = 0, Qt::WindowFlags flags = 0)  
    ~QMdiSubWindow()  
  
void    setKeyboardPageStep(int step)  
void    setKeyboardSingleStep(int step)  
void    setOption(SubWindowOption option, bool on = true)//未试效果,求补充,枚举值见1  
void    setSystemMenu(QMenu * systemMenu).se.  
void    setWidget(QWidget * widget)//主要通过个函数添加它的小部件  
  
int keyboardPageStep() const  
int keyboardSingleStep() const  
QMdiArea *  mdiArea() const  
QMenu * systemMenu() const  
QWidget *   widget() const  
bool    testOption(SubWindowOption option) const  
bool    isShaded() const  
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Public Slots

void showShaded()
void showSystemMenu()
Signals
void aboutToActivate()
void windowStateChanged(Qt::WindowStates oldState, Qt::WindowStates newState)


1,enum QMdiSubWindow::SubWindowOption
Constant Value Description
QMdiSubWindow::RubberBandResize 0x4 If you enable this option, a rubber band control is used to represent the subwindow's outline, and the user resizes this instead of the subwindow itself. As a result, the subwindow maintains its original position and size until the resize operation has been completed, at which time it will receive a single QResizeEvent. By default, this option is disabled.
QMdiSubWindow::RubberBandMove 0x8 If you enable this option, a rubber band control is used to represent the subwindow's outline, and the user moves this instead of the subwindow itself. As a result, the subwindow remains in its original position until the move operation has completed, at which time aQMoveEvent is sent to the window. By default, this option is disabled.

本文转自夜&枫博客园博客,原文链接:http://www.cnblogs.com/newstart/p/4478660.html,如需转载请自行联系原作者

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