PyQt5基础学习-QtPrintSupport.QPrinter(打印机) 1.painter.begin(将绘图重定向到打印机) 2.QTextEdit().grab(获得文本编辑框的界面) 3.QtGui.QPainter().drawPixmap(从某个位置开始打印)

设计一个文本编辑框，然后将打印的内容导向到图像编辑器上，通过绘图编辑器对文本编辑框的内容进行打印

"""
使用打印机
"""

from PyQt5 import QtGui, QtWidgets, QtPrintSupport
from PyQt5.QtWidgets import QMainWindow
from PyQt5.QtWidgets import *
import sys

class PrintSupport(QMainWindow):
    def __init__(self):
        super(PrintSupport, self).__init__()
        self.setGeometry(500, 200, 300, 300)
        self.button = QPushButton("打印QTextEdit控件中的内容", self)
        self.button.setGeometry(20, 20, 260, 30)
        self.editor = QTextEdit("默认文本", self)
        self.editor.setGeometry(20, 60, 260, 200)

        self.button.clicked.connect(self.print)

    def print(self):
        printer = QtPrintSupport.QPrinter()

        painter = QtGui.QPainter()
        #将绘制的目标重定向到打印机
        painter.begin(printer)
        #获得文本编辑器的内容
        screen = self.editor.grab()
        #从10,10的位置进行绘制
        painter.drawPixmap(10, 10, screen)
        painter.end()



if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    main = PrintSupport()
    main.show()

    sys.exit(app.exec_())