QT可动态添加、删除控件的小项目

#include "acrollwidget.h" #include "ui_acrollwidget.h" acrollwidget::acrollwidget(QWidget *parent) : QWidget(parent), ui(new Ui::acrollwidget) { ui->setupUi(this); } acrollwidget::~acrollwidget() { delete ui; } void acrollwidget::on_cash_btn_clicked() { cashway *widget = new cashway(); list_widget.append(widget); ui->vlayout->addWidget(widget); widget->setCashInfo("现金"); } void acrollwidget::on_weix_btn_clicked() { cashway *widget = new cashway(); list_widget.append(widget); widget->setCashInfo("微信"); ui->vlayout->addWidget(widget); } void acrollwidget::on_zhifb_btn_clicked() { cashway *widget = new cashway(); list_widget.append(widget); widget->setCashInfo("支付宝"); ui->vlayout->addWidget(widget); } void acrollwidget::on_card_btn_clicked() { cashway *widget = new cashway(); list_widget.append(widget); widget->setCashInfo("银联卡"); ui->vlayout->addWidget(widget); } void acrollwidget::on_delete_btn_clicked() { int num = ui->vlayout->count(); // 获取布局中的item的数量 if( num){ QWidget *widget = ui->vlayout->itemAt(num - 1)->widget(); ui->vlayout->removeWidget(widget); delete widget; } }