python – PyQt打印原始PDF

以下Python3代码打印PDF源代码！我不希望Qt为我构建PDF,只需使用gui对话框将其发送到打印机.

这应该适用于任何操作系统,(没有lp命令)…假设打印机设备本身可以理解PDF.

import sys,PyQt4.QtCore,PyQt4.QtGui

def pdf():
    pdf = open('test.pdf',encoding='utf-8').read() # ascii PDF here
    doc = PyQt4.QtGui.QTextDocument(pdf)
    printer = PyQt4.QtGui.QPrinter()
    dialog = PyQt4.QtGui.QPrintDialog(printer)
    if dialog.exec_() == True:
        doc.print_(printer)

if __name__ == '__main__':
    app = PyQt4.QtGui.QApplication(sys.argv)
    w = PyQt4.QtGui.QWidget()
    but = PyQt4.QtGui.QPushButton('Print',w)
    but.clicked.connect(pdf)  
    PyQt4.QtGui.QVBoxLayout(w).addWidget(but)
    w.show()
    sys.exit(app.exec_())