#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { reminder.setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint | Qt::WindowDoesNotAcceptFocus |Qt::FramelessWindowHint); reminder.setAttribute(Qt::WA_ShowWithoutActivating); reminder.setWindowOpacity(0.8); //so the reminder does not interrupt user interaction with other programs reminder.setMouseTracking(true); reminder.setAutoFillBackground(true); reminder.setStyleSheet("background:black;"); reminder.setGeometry(800,600,200,200); ui->setupUi(this); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_pushButton_clicked() { reminder.show(); }