PyQt5學習筆記1_第一個QML+PyQt程序

開發環境：PyQt 5.5.1 Python 3.4.4 Qt 5.6.3

1. Qt Creator新建項目
   通過New File or Project->Qt Quick Controls UI新建一個項目，需勾選With ui.qml file。Ctrl+R運行程序，效果如下：
   
2. PyQt程序編寫
   參考教程 PyQt5 - Lesson 007. Works with QML QtQuick，在第一步中創建的項目目錄untitled下新建一個py文件，代碼如下：

from PyQt5.QtGui import QGuiApplication
from PyQt5.QtQml import QQmlApplicationEngine


if __name__ == "__main__":
    import sys

    # Create an instance of the application
    app = QGuiApplication(sys.argv)
    # Create QML engine
    engine = QQmlApplicationEngine()
    # Load the qml file into the engine
    engine.load("untitled.qml")

    engine.quit.connect(app.quit)
    sys.exit(app.exec_())

效果如下：

3. 跟隨系統樣式
第二步中其風格沒有跟隨系統樣式，在 How to access native styles for qml apps? 找到了解決方法，即用QApplication替代QGuiApplication，代碼如下：

# from PyQt5.QtGui import QGuiApplication
from PyQt5.QtWidgets import QApplication
from PyQt5.QtQml import QQmlApplicationEngine


if __name__ == "__main__":
    import sys

    # Create an instance of the application
    app = QApplication(sys.argv)
    # Create QML engine
    engine = QQmlApplicationEngine()
    # Load the qml file into the engine
    engine.load("untitled.qml")

    engine.quit.connect(app.quit)
    sys.exit(app.exec_())