Qt-扩展对话框，切换按钮。

#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); ui->groupBox_2->hide(); ui->groupBox_3->hide(); layout()->setSizeConstraint(QLayout::SetFixedSize); setColumnRange('A','Z'); } void MainWindow::setColumnRange(QChar first, QChar last) { ui->comboBox->clear(); ui->comboBox_3->clear(); ui->comboBox_5->clear(); ui->comboBox_3->addItem(tr("None")); ui->comboBox_5->addItem(tr("None")); ui->comboBox->setMinimumSize( ui->comboBox_3->sizeHint()); QChar ch=first; while(ch<=last) { ui->comboBox->addItem(QString(ch)); ui->comboBox_3->addItem(QString(ch)); ui->comboBox_5->addItem(QString(ch)); ch=ch.unicode()+1; } } MainWindow::~MainWindow() { delete ui; }