Qt常用的按钮控件编程（一）- Push Button按钮

#include "widget.h" #include <QMessageBox> Widget::Widget(QWidget *parent) : QWidget(parent) { /* 设置宽高为 800×480,位置在 0, 0。（0, 0）代表原点，Qt 默认最左上角的点为原点 */ this->setGeometry(0, 0, 800, 480); /* 实例化两个按钮对象，并设置其显示文本为"黄色窗口"和"粉色窗口" */ pushButton1 = new QPushButton("黄色窗口", this); pushButton2 = new QPushButton("粉色窗口", this); /* 设定两个 QPushButton 对象的位置 */ pushButton1->setGeometry(300,200,80,40); pushButton2->setGeometry(400,200,80,40); /* 信号槽连接 */ connect(pushButton1, SIGNAL(clicked()), this, SLOT(pushButton1_Clicked())); connect(pushButton2, SIGNAL(clicked()), this, SLOT(pushButton2_Clicked())); } Widget::~Widget() { } /* 槽函数的实现 */ void Widget::pushButton1_Clicked() { /* 设置主窗口的样式 1 */ this->setStyleSheet("Widget { background-color: rgba(255, 255, 0, 100%); }"); QMessageBox::warning(this, QString::fromLocal8Bit("警告"), QString::fromLocal8Bit("设置成功"), QMessageBox::Ok); } /* 槽函数的实现 */ void Widget::pushButton2_Clicked() { /* 设置主窗口的样式 2 */ this->setStyleSheet("Widget { background-color: rgba(255, 192, 203, 100%); }"); }