feat: Display several styles of the operating system through QStyleFactory

QtMyStyleEx/QtExample01/QtStyleEx/QtStyleEx.pro

@@ -0,0 +1,37 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2020-02-13T22:45:19
+#
+#-------------------------------------------------
+
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET = QtStyleEx
+TEMPLATE = app
+
+# The following define makes your compiler emit warnings if you use
+# any feature of Qt which has been marked as deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+# You can also make your code fail to compile if you use deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+CONFIG += c++11
+
+SOURCES += \
+        main.cpp \
+        widget.cpp
+
+HEADERS += \
+        widget.h
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

QtMyStyleEx/QtExample01/QtStyleEx/main.cpp

@@ -0,0 +1,11 @@
+#include "widget.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    Widget w;
+    w.show();
+
+    return a.exec();
+}

QtMyStyleEx/QtExample01/QtStyleEx/widget.cpp

@@ -0,0 +1,65 @@
+#include "widget.h"
+
+#include <QDebug>
+#include <QTableWidget>
+#include <QProgressBar>
+#include <QPushButton>
+#include <QApplication>
+#include <QSlider>
+#include <QScrollBar>
+#include <QStyleFactory>
+
+Widget::Widget(QWidget *parent)
+    : QWidget(parent)
+{
+    init();
+}
+
+Widget::~Widget()
+{
+
+}
+
+void Widget::init()
+{
+    QTableWidget *table = new QTableWidget(10, 10, this);
+    table->move(10, 10);
+
+    QScrollBar *scrollBarH = new QScrollBar(this);
+    scrollBarH->move(300, 50);
+    scrollBarH->setRange(0, 100);
+    scrollBarH->setValue(34);
+    scrollBarH->resize(380, 20);
+    scrollBarH->setOrientation(Qt::Horizontal);
+
+    QScrollBar *scrollBarV = new QScrollBar(this);
+    scrollBarV->move(50, 250);
+    scrollBarV->setRange(0, 100);
+    scrollBarV->setValue(67);
+    scrollBarV->resize(20, 380);
+    scrollBarV->setOrientation(Qt::Vertical);
+
+    QProgressBar* progreH = new QProgressBar(this);
+    progreH->move(300, 100);
+    progreH->resize(250, 40);
+    progreH->setValue(37);
+    progreH->setOrientation(Qt::Horizontal);
+
+    QProgressBar* progreV = new QProgressBar(this);
+    progreV->move(100, 300);
+    progreV->resize(40, 250);
+    progreV->setValue(67);
+    progreV->setOrientation(Qt::Vertical);
+
+    int i = 0;
+    QStringList listStyle = QStyleFactory::keys();
+    foreach(QString val, listStyle) {   //打印当前系统支持的系统风格
+        qDebug()<<val<<"  ";
+        QPushButton *btn = new QPushButton(val, this);
+        btn->move(this->rect().right() - 100, this->rect().top() + i++ * 40);
+        connect(btn, &QPushButton::clicked, this, [=](){
+            qApp->setStyle(val);
+        });
+    }
+
+}

QtMyStyleEx/QtExample01/QtStyleEx/widget.h

@@ -0,0 +1,17 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+
+class Widget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Widget(QWidget *parent = 0);
+    ~Widget();
+
+    void init();
+};
+
+#endif // WIDGET_H