Aguangliang的博客

一、.pro文件QT += core gui networkgreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use# any Qt feature that has been marked deprecated (the exact warnings# depend on

一、读文件#include "widget.h"#include "ui_widget.h"#include <QFileDialog>#include <QDebug>#include <QMessageBox>#include <QFile>#include <QTextCodec>Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget){

QT的绘图设备分为：QPixmap、QBixmap、QImage、QPicture一、QPixmap #include <QPainter> //QPixmap作绘图设备，对不同平台做了显示优化 QPixmap pixmap(300,300); pixmap.fill(Qt::white); //设置背景颜色为白色 QPainter painter1(&pixmap); painter1.setPen(QPen(Qt::gr

#include <QPainter> QPainter painter(this); painter.drawEllipse(QPoint(200,200),50,50); painter.setRenderHint(QPainter::Antialiasing); //抗锯齿 painter.drawEllipse(QPoint(400,200),50,50); painter.drawRect(QRect(20,20,50,50)).

#include <QPainter> //画图的头文件 QPen pen(QColor(255,0,0)); //设置线条的颜色（红色） pen.setWidth(3); //设置线条的宽度（3像素宽） pen.setStyle(Qt::DashLine); //设置线条的样式 QPainter painter(this); painter.setPe.

一、QT的定时器事件#include <QTimerEvent>Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget){ ui->setupUi(this); this->timer1 = this->startTimer(1000); this->timer2 = this->startTimer(2000);}Widget::~Widget(

//鼠标进入事件void myLabel::enterEvent(QEvent*){ qDebug() << "鼠标进入";}//鼠标离开事件void myLabel::leaveEvent(QEvent*){ qDebug() << "鼠标离开";}//鼠标按下事件void myLabel::mousePressEvent(QMouseEvent *ev){ if (ev->button() == Qt::LeftButton)

一、添加 //combineWidget.cpp文件中添加 void(QSpinBox:: * spinBoxPointer)(int) = &QSpinBox::valueChanged; connect(ui->spinBox,spinBoxPointer,ui->horizontalSlider,&QSlider::setValue); connect(ui->horizontalSlider,&QSlider::val

一、Stacked Widget控件

一、QListWidget控件注：在UI中添加QListWidget控件后先编译再写代码，否则会提示缺少头文件 QListWidgetItem* item1 = new QListWidgetItem("锄禾日当午"); item1->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter); ui->listWidget->addItem(item1); QStringList list; list

一、Push Button二、Tool Button（单选按钮）三、Radio Button采用Label命名，Widget分组采用Group Box命名并分组采用代码或勾选方式默认选中某一按钮ui->radioButton->setChecked(true);四、Check Box（多选框）半选状态设置：ui->checkBox->setTristate(true);获取选中状态：（未选中为0，半选为1，选中为2）connect(ui->

主要写三个对话框：颜色对话框、字体对话框、文件对话框一、颜色对话框头文件：#include QColor userColor = QColorDialog::getColor(QColor(12,45,89)); //QColor()函数设置默认选择的颜色，参数为RGB的三个数字qDebug() << "用户选择的颜色为：" << userColor.red() << userColor.green() << userColor.blue();

QMessageBox是弹出的消息框，分为：错误、消息、问题、警告。//具体参数如下：critical(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons = Ok, QMessageBox::StandardButton defaultButton = NoButton) //错误information(QWidget *parent, c

对话框分为模态对话框、非模态对话框。模态对话框：当前窗口打开时，无法处理其他窗口内容非模态对话框：当前窗口打开时，可以处理其他窗口内容一、模态对话框#include "mainwindow.h"#include "ui_mainwindow.h"#include <QDialog> //对话框的头文件MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow){

一、添加本地图标注：本地导入的图标名可以为中文ui->actionnew_3->setIcon(QIcon("C:\\Users\\Admin\\Desktop\\新建.png"));ui->actionnew_3->setIcon(QIcon("C:/Users/Admin/Desktop/新建.png"));二、导入资源1.在项目上右键’Add New’2.在弹出窗口选择Qt->Qt Resource File->Choose3.命名、选择路径

#include "mainwindow.h"#include <QMenuBar>#include <QToolBar>#include <QStatusBar>#include <QLabel>#include <QDockWidget>#include <QTextEdit>MainWindow::MainWindow(QWidget *parent): QMainWindow(parent){ this

**QT的QToolBar添加下拉栏**QToolBar* toolBarPointer = new QToolBar(this); this->addToolBar(Qt::LeftToolBarArea,toolBarPointer); toolBarPointer->setMovable(true); toolBarPointer->setFloatable(false); toolBarPointer->setAllowedAreas(Qt::LeftToolBarAre