Qt实现程序启动画面（QSplashScreen）

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include <QTextEdit>
#include <windows.h>
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setWindowTitle("Splash Example");
    QTextEdit *edit = new QTextEdit;
    edit->setText("Splash Example");
    setCentralWidget(edit);
    resize(600,450);
    Sleep(1000);
}

MainWindow::~MainWindow()
{
}

main.cpp

#include "mainwindow.h"

#include <QApplication>
#include <QPixmap>
#include <QSplashScreen>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPixmap pixmap("F:/QT/Test_Q/Qt.png");
    QSplashScreen splash(pixmap);
    splash.show();
    a.processEvents();
    MainWindow w;
    w.show();
    return a.exec();
}

 先显示Qt的LOGO等待一秒后显示主窗体