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diff --git a/zh-cn/pyqt-cn.html.markdown b/zh-cn/pyqt-cn.html.markdown new file mode 100644 index 00000000..27c2aba4 --- /dev/null +++ b/zh-cn/pyqt-cn.html.markdown @@ -0,0 +1,76 @@ +--- +category: tool +tool: PyQT +filename: learnpyqt.py +contributors: + - ["kdxcxs", "https://github.com/kdxcxs"] +--- + +**Qt** is a widely-known framework for developing cross-platform software that can be run on various software and hardware platforms with little or no change in the code, while having the power and speed of native applications. Though **Qt** was originally written in *C++*. + + +This is an adaption on the C++ intro to QT by [Aleksey Kholovchuk](https://github.com/vortexxx192 +), some of the code examples should result in the same functionality +this version just having been done using pyqt! + +```python +import sys +from PyQt4 import QtGui + +def window(): + # Create an application object + app = QtGui.QApplication(sys.argv) + # Create a widget where our label will be placed in + w = QtGui.QWidget() + # Add a label to the widget + b = QtGui.QLabel(w) + # Set some text for the label + b.setText("Hello World!") + # Give some size and placement information + w.setGeometry(100, 100, 200, 50) + b.move(50, 20) + # Give our window a nice title + w.setWindowTitle("PyQt") + # Have everything display + w.show() + # Execute what we have asked for, once all setup + sys.exit(app.exec_()) +if __name__ == '__main__': + window() +``` + +In order to get some of the more advanced features in **pyqt** we need to start looking at building additional elements. +Here we show how to introduce a dialog popup box, useful for asking the user to confirm a decision or to provide information. + +```Python +import sys +from PyQt4.QtGui import * +from PyQt4.QtCore import * +def window(): + app = QApplication(sys.argv) + w = QWidget() + # Create a button and attach to widget w + b = QPushButton(w) + b.setText("Press me") + b.move(50, 50) + # Tell b to call this function when clicked + # notice the lack of "()" on the function call + b.clicked.connect(showdialog) + w.setWindowTitle("PyQt Dialog") + w.show() + sys.exit(app.exec_()) + +# This function should create a dialog window with a button +# that waits to be clicked and then exits the program +def showdialog(): + d = QDialog() + b1 = QPushButton("ok", d) + b1.move(50, 50) + d.setWindowTitle("Dialog") + # This modality tells the popup to block the parent whilst it's active + d.setWindowModality(Qt.ApplicationModal) + # On click I'd like the entire process to end + b1.clicked.connect(sys.exit) + d.exec_() +if __name__ == '__main__': + window()
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