qt中QVBoxLayout,QHBoxLayout布局中实现控件的动态加载与显示

#include "mainwindow.h" #include <windows.h> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { this->setFixedSize(500,300); this->InitUi(); s_PremierLeague<<"曼城"; QString pu = 0x6D66; s_PremierLeague<<"利物"+ pu; s_PremierLeague<<"热刺"; QString qie = 0x5207; s_PremierLeague<<qie+"尔西"; s_PremierLeague<<"曼联"; QString de = 0x5FB7; QString huang = 0x7687; QString li = 0x91CC; s_LaLiga<<"皇家马德" + li; s_LaLiga<<"巴塞罗那"; s_LaLiga<<"塞维利亚"; s_Liguel<<"巴黎圣日耳曼"; s_SerieA<<"尤文图斯"; s_SerieA<<"罗马"; s_Bundesliga<<"拜仁"; } MainWindow::~MainWindow() { } void MainWindow::InitUi() { //注意setlayout在MainWindow中是不起作用的 centerWindow = new QWidget(); this->setCentralWidget(centerWindow); v = new QVBoxLayout(this); h_up = new QHBoxLayout(this); h_down = new QHBoxLayout(this); m_PremierLeague = new QPushButton(this); m_PremierLeague->setText("英超"); connect(m_PremierLeague,SIGNAL(clicked(bool)),this,SLOT(clickPremierLeague())); h_up->addWidget(m_PremierLeague); m_LaLiga = new QPushButton("西甲",this); m_Ligue1 = new QPushButton("法甲",this); m_SerieA = new QPushButton("意甲",this); m_Bundesliga = new QPushButton("德甲",this); h_up->addWidget(m_LaLiga); connect(m_LaLiga,SIGNAL(clicked(bool)),this,SLOT(clickLaLiga())); h_up->addWidget(m_Ligue1); connect(m_Ligue1,SIGNAL(clicked(bool)),this,SLOT(clickLigue1())); h_up->addWidget(m_SerieA); connect(m_SerieA,SIGNAL(clicked(bool)),this,SLOT(clickSerieA())); h_up->addWidget(m_Bundesliga); connect(m_Bundesliga,SIGNAL(clicked(bool)),this,SLOT(clickBundesliga())); v->addLayout(h_up); v->addLayout(h_down); centerWindow->setLayout(v); } void MainWindow::DynamicLayout(QStringList name) { //判断此布局内的控件个数 if(h_down->count() > 0) { int count = h_down->count(); for(int i = count-1 ; i >= 0 ; i --) { QLayoutItem *it = h_down->layout()->takeAt(i); TeamNameLabel *oldHistory = qobject_cast<TeamNameLabel*>(it->widget()); if(oldHistory != NULL) delete oldHistory; } } if(name.size() > 0) { for(int i = 0 ; i < name.size() ; i++) { TeamNameLabel *team = new TeamNameLabel(name[i]); h_down->addWidget(team); } } } void MainWindow::clickPremierLeague() { DynamicLayout(s_PremierLeague); } void MainWindow::clickLaLiga() { DynamicLayout(s_LaLiga); } void MainWindow::clickLigue1() { DynamicLayout(s_Liguel); } void MainWindow::clickSerieA() { DynamicLayout(s_SerieA); } void MainWindow::clickBundesliga() { DynamicLayout(s_Bundesliga); }