Qt4 QRadioButton和QCheckBox用法示例

#include "mainwindow.h" #include <QPixmap> #include <QBitmap> MyButtonWindow::MyButtonWindow(QWidget *parent) : QWidget(parent) { setGeometry(100,100,230,190);//从屏幕上（100，100）位置开始（即为最左上角的点），显示一个230*190的界面（宽230，高190） // radio group radioGroup = new QGroupBox("Options 1", this); radioGroup->setGeometry(10,10,100,110); radio1 = new QRadioButton("Choice1", this); radio1->move(20,35); radio2 = new QRadioButton("Choice2", this); radio2->move(20,60); radio3 = new QRadioButton("Choice3", this); radio3->move(20,85); label1 = new QLabel("Option1 Result:", this); label1->setGeometry(10,130,100,20); label1->setAlignment(Qt::AlignRight); // check group checkGroup = new QGroupBox("Options 2", this); checkGroup->setGeometry(120,10,100,110); check1 = new QCheckBox("Choice1", this); check1->move(130,35); check2 = new QCheckBox("Choice2", this); check2->move(130,60); check3 = new QCheckBox("Choice3", this); check3->move(130,85); label2 = new QLabel("Option2 Result:", this); label2->setGeometry(10,160,100,20); label2->setAlignment(Qt::AlignRight); // init buttons initButtons(); // signals and slots connect(radio1, SIGNAL(clicked(bool)), this, SLOT(radioChange())); connect(radio2, SIGNAL(clicked(bool)), this, SLOT(radioChange())); connect(radio3, SIGNAL(clicked(bool)), this, SLOT(radioChange())); connect(check1, SIGNAL(clicked()), this, SLOT(checkChange())); connect(check2, SIGNAL(clicked()), this, SLOT(checkChange())); connect(check3, SIGNAL(clicked()), this, SLOT(checkChange())); } void MyButtonWindow::initButtons() { QPixmap pixmap1("1.png"); QPixmap pixmap2("2.png"); QPixmap pixmap3("3.png"); label11 = new QLabel("", this); label11->setGeometry(120,129,18,19); label11->setPixmap(pixmap1); label11->resize(pixmap1.size()); label12 = new QLabel("", this); label12->setGeometry(149,129,18,19); label12->setPixmap(pixmap2); label12->resize(pixmap2.size()); label13 = new QLabel("", this); label13->setGeometry(178,129,18,19); label13->setPixmap(pixmap3); label13->resize(pixmap3.size()); label21 = new QLabel("", this); label21->setGeometry(120,159,18,19); label21->setPixmap(pixmap1); label21->resize(pixmap1.size()); label22 = new QLabel("", this); label22->setGeometry(149,159,18,19); label22->setPixmap(pixmap2); label22->resize(pixmap2.size()); label23 = new QLabel("", this); label23->setGeometry(178,159,18,19); label23->setPixmap(pixmap3); label23->resize(pixmap3.size()); } void MyButtonWindow::radioChange() { /* QPixmap pixmap1("1.png"); QPixmap pixmap2("2.png"); QPixmap pixmap3("3.png"); label11->setPixmap(pixmap1); label11->resize(pixmap1.size()); label12->setPixmap(pixmap2); label12->resize(pixmap2.size()); label13->setPixmap(pixmap3); label13->resize(pixmap3.size()); QString url; QLabel *label; if (sender() == radio1) { url = "11.png"; label = label11; } else if (sender() == radio2) { url = "22.png"; label = label12; } else if (sender() == radio3) { url = "33.png"; label = label13; } QPixmap pixmap(url); label->setPixmap(pixmap); label->resize(pixmap.size()); */ QPixmap pixmap1("1.png"); QPixmap pixmap2("2.png"); QPixmap pixmap3("3.png"); label11->setPixmap(pixmap1); label11->resize(pixmap1.size()); label12->setPixmap(pixmap2); label12->resize(pixmap2.size()); label13->setPixmap(pixmap3); label13->resize(pixmap3.size()); QString url; QLabel *label; if (sender() == radio1) { url = "11.png"; label = label11; } else if (sender() == radio2) { url = "22.png"; label = label12; } else if (sender() == radio3) { url = "33.png"; label = label13; } QPixmap pixmap(url); label->setPixmap(pixmap); label->resize(pixmap.size()); } void MyButtonWindow::checkChange() { QString url; QLabel *label; if (sender() == check1) { url = check1->isChecked() ? "11.png" : "1.png"; label = label21; } else if (sender() == check2) { url = check2->isChecked() ? "22.png" : "2.png"; label = label22; } else if (sender() == check3) { url = check3->isChecked() ? "33.png" : "3.png"; label = label23; } QPixmap pixmap(url); label->setPixmap(pixmap); label->resize(pixmap.size()); }