Qt widgets--Sub-regions and child windows

Qmdiarea is typically used for the main window Qmainwindow to hold multiple child windows Qmdisubwindow

QT Creator 3.0 designers have mdiarea that can be dragged directly into use.

The interface is as follows, the gray box in the figure is a mdiarea, and the other one creates 2 Qmdisubwindow: The code is as follows:

#include"mainwindow.h"#include"ui_mainwindow.h"#include<QSize>Mainwindow::mainwindow (Qwidget*parent): Qmainwindow (parent), UI (NewUi::mainwindow) {UI-&GT;SETUPUI ( This); Connect (UI->actionnew,signal (triggered ()), This, SLOT (Creatnewwin ()));//Actionnew is an action created by a designer  }    voidMainwindow::creatnewwin () {mdiWin1=NewQmdisubwindow; MdiWin1->setwindowtitle ("Undecided"); UI->mdiarea->Addsubwindow (mdiWin1); MdiWin1->resize (Qsize ( $, $)); MdiWin1-Show (); } MainWindow::~MainWindow () {Delete UI; }  

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Qmdiarea public functions are as follows:

Qmdiarea (qwidget * parent =0)      ~Qmdiarea () Qmdisubwindow* Addsubwindow (Qwidget * widget, qt::windowflags windowflags =0)  voidRemovesubwindow (Qwidget *widget)voidSetactivationorder (Windoworder order)//set the activation order by default to create a sequential activation, the slot function has a call, the enumeration value is shown in 1voidSetBackground (ConstQbrush & Background)//set background, default grayvoidSetdocumentmode (BOOLenabled)voidSetOption (areaoption option,BOOLOn =true)//now there is only one option, that is to create a subwindow, the window is not filled with this area, the default is full, enumeration values are shown in 2voidSetviewmode (ViewMode mode)//Set viewport mode, the default area of a lot of small windows, can also be Tabbar form, the following these Settings tab function, you need to first open this. Enumeration values are shown in 3voidSettabposition (qtabwidget::tabposition position)//set the azimuth of the Tabbar, have the East four directions, follow the geographical upper North lower left West right East enumeration value See 4voidSettabshape (Qtabwidget::tabshape shape)//set tab shape, default rectangle, can also be like Google Chrome, trapezoid, enumeration value See 5voidSettabsclosable (BOOLclosable)//default No, when set to true, a close small button is formed above the tabvoidSettabsmovable (BOOLMovable)//whether the settings can be moved, by default false, can be moved, you can drag tab to move on the Tabbar, now the browser mostly has this functionqlist<qmdisubwindow *> subwindowlist (windoworder order = creationorder)ConstQmdisubwindow* Currentsubwindow ()Constwindoworder Activationorder ()ConstQbrush background ()Const  BOOLDocumentmode ()Const  BOOLTestoption (areaoption option)ConstQmdisubwindow* Activesubwindow ()Constqtabwidget::tabposition tabposition ()Constqtabwidget::tabshape tabshape ()Const  BOOLTabsclosable ()Const  BOOLTabsmovable ()ConstViewMode ViewMode ()Const  

Public Slots

void     Activatenextsubwindow ()  void    activateprevioussubwindow ()  void      cascadesubwindows ()  void    closeactivesubwindow ()    void    closeallsubwindows ()  void    Setactivesubwindow (Qmdisubwindow * window)   void    Tilesubwindows ()// arranges all child windows neatly  in the visible part of area

Signals

void    subwindowactivated (Qmdisubwindow * window)// Toggle active window  

1,enum Qmdiarea::windoworder

Constant	Value	Description
Qmdiarea::creationorder	0	By the order in which they were created
Qmdiarea::stackingorder	1	Stacking order
Qmdiarea::activationhistoryorder	2	Press to activate history before and after order.

2,enum qmdiarea::areaoption
Flags Qmdiarea::areaoptions

Constant	Value	Description
Qmdiarea::D ontmaximizesubwindowonactivation	0x1	does not maximize when activated, it is maximized by default

3,qmdiarea::viewmode

Constant	Value	Description
Qmdiarea::subwindowview	0	Display as a small window (default).
Qmdiarea::tabbedview	1	Not only can small windows, but also form Tabbar

4,enum qtabwidget::tabposition

Constant	Value	Description
Qtabwidget::north	0	Above display
Qtabwidget::south	1	Under
Qtabwidget::west	2	Left
Qtabwidget::east	3	Right

5,enum Qtabwidget::tabshape

Constant	Value	Description
qtabwidget::rounded	0	is literally round, but Win7 more like a rectangle, default
Qtabwidget::triangular	1	Literal triangle that says it's trapezoid better

In the above code, the result of executing the tilesubwindows () function is shown in the figure:

#include"mainwindow.h"#include"ui_mainwindow.h"#include<QSize>#include<QTabWidget>#include<QBrush>Mainwindow::mainwindow (Qwidget*parent): Qmainwindow (parent), UI (NewUi::mainwindow) {UI-&GT;SETUPUI ( This); Qbrush b=qbrush (Qcolor ( -, -, -), 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::D ontmaximizesubwindowonactivation); Connect (UI->actionnew,signal (triggered ()), This, SLOT (Creatnewwin ())); }    voidMainwindow::creatnewwin () {mdiWin1=NewQmdisubwindow; MdiWin1->setwindowtitle ("Undecided"); UI->mdiarea->Addsubwindow (mdiWin1); MdiWin1->resize (Qsize ( $, $)); MdiWin1-Show (); } MainWindow::~MainWindow () {Delete UI; }    voidmainwindow::on_pushbutton_clicked () {UI->mdiarea->tilesubwindows (); }  

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The Qmdisubwindow functions are relatively simple and are listed as follows:

Qmdisubwindow (qwidget * parent =0, Qt::windowflags flags =0)      ~Qmdisubwindow ()voidSetkeyboardpagestep (intStep)voidSetkeyboardsinglestep (intStep)voidSetOption (subwindowoption option,BOOLOn =true)//trial effect, supplementary, enumeration values see 1voidSetsystemmenu (Qmenu *systemmenu). SE. voidSetwidget (Qwidget * widget)//to add its widgets primarily through a function  intKeyboardpagestep ()Const  intKeyboardsinglestep ()ConstQmdiarea* Mdiarea ()ConstQmenu* Systemmenu ()ConstQwidget* Widgets ()Const  BOOLTestoption (subwindowoption option)Const  BOOLIsshaded ()Const  

Public Slots

void	Showshaded ()
void	Showsystemmenu ()

Signals

void	Abouttoactivate ()
void	Windowstatechanged (qt::windowstates oldstate, qt::windowstates newstate)

1,enum qmdisubwindow::subwindowoption TD class= "Topalign" >if you enable this option, a rubber band control are 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 have been completed, at whic H time it would receive a single qresizeevent. By default, this option is disabled.

Constant	Value	Description
qmdisubwindow::rubberbandresize	0x4
Qmdisubwindow::rubberbandmove	0x8	If you enable this option, a rubber band control was used to represent the Subwindow ' s outline, and the user moves this ins Tead of the subwindow itself. As a result, the Subwindow remains in its original position until the move operation have completed, at which time Aqmoveev ENT is sent to the window. By default, this option is disabled.

Qt widgets--Sub-regions and child windows