只是記事本

下面寫個很簡單可以改變按鈕外觀的方法

到designer裡按右鍵，變更樣式表即可

Another way, to edit it's StyleSheets. It's easy!

#include <QApplication>

#include <QPushButton>

#include <QFont>

#include <QMenu>

#include <QLabel>

int main(int argc, char *argv[]) {

     QApplication app(argc, argv);

     QPushButton *btn = new QPushButton("Close");

     btn->setWindowTitle("Signal & Slot");

     btn->setFont(QFont("Courier", 18, QFont::Bold));

     btn->resize(250, 50);

     btn->setStyleSheet("background-color: yellow");

     QObject::connect(btn, SIGNAL(clicked()), &app, SLOT(quit()));

     btn->show();

     return app.exec();

}