二丶接著上一節，這節主要講，多屏分割，多屏相互切換

(1)QT 常用到的佈局類有：QHBoxLayout、QVBoxLayout、QGridLayout三種，分別是水平排列布局、垂直排

列布局、表格排列布局。常用的方法有addWidget()和addLayout()。addWidget()用於在佈局中插入控制元件，addLayout()

用於在佈局中插入子佈局。在佈局管理中還常用到setMargin()用於設定邊距，setSpacing()用於設定控制元件間距。

(2) 整體而言，在這個多分屏中，只要點選其中的一個螢幕，點選的螢幕便會覆蓋整個螢幕然後再次雙擊，便能夠

(3)具體直接看效果圖和程式碼：

一分屏

#ifndef CWSKCONTROLWIN_H
#define CWSKCONTROLWIN_H

#include <QWidget>
#include <QFrame>
#include <QDebug>
#include <QTimer>
#include <QMouseEvent>

class CWskControlWin : public QFrame
{
    Q_OBJECT
public:
    explicit CWskControlWin(QWidget *parent = 0);

    bool GetIsShow(){return m_bShow;}
    void SetIsShow(bool bShow = false){ m_bShow = bShow;}

protected:

    void mouseDoubleClickEvent(QMouseEvent *);

signals:


public slots:


private:
    bool m_bShow;

};

#endif // CWSKCONTROLWIN_H
 

#include "cwskcontrolwin.h"
#include <QPainter>

CWskControlWin::CWskControlWin(QWidget *parent)
    : QFrame(parent)
{
    m_bShow = false;
    this->setStyleSheet("QFrame{ border: 1px solid #0000CD;}");//藍色
}

void CWskControlWin::mouseDoubleClickEvent(QMouseEvent *)
{
    qDebug() << "is double click ... " << this->winId();
    m_bShow = !m_bShow;
}



 

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QGridLayout>
#include <QTimer>
#include "cwskcontrolwin.h"

#define WND_MAX_NUM			 64

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

    enum ChildState{NO_WND = 0,ONE_WND,TWO_WND,FOUR_WND,EIGHT_WND,SIXTEEN_WND,THIRTY_TWO_WND,SIXTY_FOUR_WND};

    void SetAllShowToFalse();

public slots:
    void UpdateShowWnd();
    void changeWidgetCount(int);

private:
    Ui::Widget *ui;
    int m_nNum;
    std::vector<QGridLayout *> m_vecNLayout;
    std::vector<CWskControlWin *> playViews;
    CWskControlWin * getView(uint num);
    void setPlayScreenLayout(ChildState state, int start);
    QTimer m_timer;
    ChildState m_nCurrentState;
    int m_nLayoutStart;


};

#endif // WIDGET_H

#include "widget.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();

    return a.exec();
}