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CoderMJLeeCoderMJLee
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day 26
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‎02_代码/29_video_player/29_video_player.pro

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

‎02_代码/29_video_player/main.cpp

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#include "mainwindow.h"
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#include <QApplication>
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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MainWindow w;
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w.show();
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return a.exec();
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}

‎02_代码/29_video_player/mainwindow.cpp

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#include "mainwindow.h"
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#include "ui_mainwindow.h"
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent)
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, ui(new Ui::MainWindow) {
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ui->setupUi(this);
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}
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MainWindow::~MainWindow() {
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delete ui;
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}
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void MainWindow::on_stopBtn_clicked() {
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int count = ui->playWidget->count();
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int idx = ui->playWidget->currentIndex();
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ui->playWidget->setCurrentIndex(++idx % count);
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}

‎02_代码/29_video_player/mainwindow.h

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#ifndef MAINWINDOW_H
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#define MAINWINDOW_H
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#include <QMainWindow>
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QT_BEGIN_NAMESPACE
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namespace Ui {
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class MainWindow;
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}
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QT_END_NAMESPACE
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class MainWindow : public QMainWindow {
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Q_OBJECT
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public:
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MainWindow(QWidget *parent = nullptr);
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~MainWindow();
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private slots:
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void on_stopBtn_clicked();
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private:
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Ui::MainWindow *ui;
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};
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#endif // MAINWINDOW_H

‎02_代码/29_video_player/mainwindow.ui

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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>MainWindow</class>
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<widget class="QMainWindow" name="MainWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>921</width>
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<height>692</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>MainWindow</string>
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</property>
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<widget class="QWidget" name="centralwidget">
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<layout class="QVBoxLayout" name="verticalLayout">
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<item>
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<widget class="QStackedWidget" name="playWidget">
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<property name="currentIndex">
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<number>0</number>
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</property>
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<widget class="QWidget" name="page">
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<layout class="QHBoxLayout" name="horizontalLayout_5">
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<item>
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<widget class="QPushButton" name="openFileBtn">
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<property name="maximumSize">
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<size>
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<width>70</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="text">
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<string>打开文件</string>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<widget class="QWidget" name="page_2">
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<layout class="QGridLayout" name="gridLayout">
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<item row="0" column="0">
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<widget class="QWidget" name="videoWidget" native="true"/>
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</item>
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</layout>
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</widget>
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</widget>
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</item>
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<item>
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<layout class="QHBoxLayout" name="horizontalLayout">
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<item>
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<layout class="QHBoxLayout" name="horizontalLayout_2">
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<item>
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<widget class="QPushButton" name="playBtn">
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<property name="maximumSize">
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<size>
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<width>40</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="text">
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<string>播放</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="stopBtn">
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<property name="maximumSize">
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<size>
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<width>40</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="text">
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<string>停止</string>
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</property>
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</widget>
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</item>
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<item>
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<layout class="QHBoxLayout" name="horizontalLayout_3">
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<item>
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<widget class="QSlider" name="currentSlider">
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<property name="minimumSize">
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<size>
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<width>350</width>
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<height>0</height>
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</size>
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</property>
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLabel" name="currentLabel">
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<property name="minimumSize">
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<size>
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<width>0</width>
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<height>0</height>
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</size>
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</property>
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<property name="maximumSize">
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<size>
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<width>70</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="font">
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<font>
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<family>Consolas</family>
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</font>
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</property>
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<property name="text">
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<string>00:00:00</string>
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</property>
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<property name="alignment">
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<set>Qt::AlignCenter</set>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLabel" name="label_2">
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<property name="font">
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<font>
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<family>Consolas</family>
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</font>
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</property>
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<property name="text">
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<string>/</string>
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</property>
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<property name="alignment">
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<set>Qt::AlignCenter</set>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLabel" name="durationLabel">
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<property name="maximumSize">
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<size>
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<width>70</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="font">
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<font>
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<family>Consolas</family>
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</font>
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</property>
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<property name="text">
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<string>00:00:00</string>
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</property>
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<property name="alignment">
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<set>Qt::AlignCenter</set>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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<item>
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<layout class="QHBoxLayout" name="horizontalLayout_4">
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<item>
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<widget class="QPushButton" name="silenceBtn">
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<property name="maximumSize">
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<size>
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<width>40</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="text">
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<string>静音</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QSlider" name="volumnSlider">
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<property name="minimumSize">
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<size>
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<width>100</width>
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<height>0</height>
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</size>
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</property>
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<property name="maximumSize">
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<size>
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<width>16777215</width>
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<height>16777215</height>
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</size>
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</property>
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLabel" name="volumnLabel">
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<property name="font">
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<font>
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<family>Consolas</family>
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</font>
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</property>
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<property name="text">
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<string>100</string>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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</layout>
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</item>
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</layout>
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</item>
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</layout>
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</widget>
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<widget class="QMenuBar" name="menubar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>921</width>
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<height>26</height>
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</rect>
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</property>
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</widget>
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<widget class="QStatusBar" name="statusbar"/>
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</widget>
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<resources/>
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<connections/>
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</ui>

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