setText（）實際上並不工作Python

Question

import sys 
from PyQt4 import QtCore,QtGui 
from Windows.intro_win import Ui_Introduction 
from Windows.post_adder_win import Ui_postTool 
import win32clipboard 
import pyHook 

class Intro(QtGui.QMainWindow): 
    def __init__(self,parent=None): 
     QtGui.QWidget.__init__(self,parent) 
     self.ui = Ui_Introduction() 
     self.ui.setupUi(self) 
class postTool(QtGui.QMainWindow): 
    def __init__(self,parent=None): 
     QtGui.QWidget.__init__(self,parent) 
     self.ui2 = Ui_postTool() 
     self.ui2.setupUi(self) 
    def setModPosition(self): 
     self.ui2.lineEdit_2.setText("something") 
     print "nomnom" 


def OnKeyboardEvent(event): 
    KeyClicked = event.KeyID 
    if KeyClicked == 121: 
     print "Debug from keyboardEvent" 
     OMD_post.show() 
     postTool().setModPosition() 

if __name__ == "__main__": 
    app = QtGui.QApplication(sys.argv) 
    OMD_intro = Intro() 
    OMD_post = postTool() 
    OMD_intro.show() 
    eventkey = pyHook.HookManager() 
    eventkey.KeyDown = OnKeyboardEvent 
    eventkey.HookKeyboard() 
    sys.exit(app.exec_()) 

它並不真正起作用 - 文本沒有改變 - 爲什麼它不起作用？它不給我任何錯誤（但打印打印什麼應該） https://dl.dropbox.com/u/21125662/compilation/_00398.jpg

Answer 1

在OnKeyboardEventpostTool().setModPosition()改變一個新創建 postTool，的lineEdit文本，你不會看到，因爲你不show()新的小部件。您可能想要做的是致電setText在OMD_post。

嘗試用postTool中的keyPressEvent函數替換OnKeyBoardEvent模塊級功能，或者使用QShortCut。

class postTool(QtGui.QMainWindow): 
    def __init__(self,parent=None): 
     QtGui.QWidget.__init__(self,parent) 
     self.ui2 = Ui_postTool() 
     self.ui2.setupUi(self) 
    def setModPosition(self): 
     self.ui2.lineEdit_2.setText("something") 
     print "nomnom" 
    def keyPressEvent(event): 
     if type(event) == QtGui.QKeyEvent: 
      key = str(event.text()).lower() 
      if key == 'whatever': 
       self.setModPosition() 

另外，

class postTool(QtGui.QMainWindow): 
    def __init__(self,parent=None): 
     ... # the existing stuff 
     QtGui.QShortcut(QtGui.QKeySequence("F10"), self, self.setModPosition)