QT换肤demo

#include "skinwidget.h" #include<QSignalMapper> #include<QtWidgets> #include"mylabel.h" skinwidget::skinwidget(QWidget *parent) : QWidget(parent) { signalMqpper = new QSignalMapper(this); QStringList btnText; btnText<<"1"<<"2"<<"3"<<"4"; QHBoxLayout *mainlayout = new QHBoxLayout; for(int i=0;i<btnText.length();i++){ // QPushButton *btn= new QPushButton; MyLabel *btn= new MyLabel; QString qss="background-image:url(:/images/small_"+btnText[i]+".jpg)"; btn->setToolTip(btnText[i]); btn->setStyleSheet(qss); btn->setFixedSize(150,120); //btn->setFlat(1); btn->setScaledContents(1); mainlayout->addWidget(btn); QObject::connect(btn,SIGNAL(Clicked()),signalMqpper,SLOT(map())); signalMqpper->setMapping(btn,btnText[i]); } connect(signalMqpper,SIGNAL(mapped(QString)),this,SIGNAL(skinChange(QString))); MyLabel *skin_label = new MyLabel; skin_label->setFixedSize(100,100); skin_label->setPixmap(QPixmap(":/images/m_1.jpg")); skin_label->setScaledContents(1); QHBoxLayout *h= new QHBoxLayout; h->addLayout(mainlayout); h->addWidget(skin_label); h->addSpacing(1); h->addStretch(1); setLayout(h); setFixedSize(sizeHint().width(),sizeHint().height()); }