我不能讓我的錯誤消息框在PyQt的

Question

工作在我的初始化函數，我定義了一個錯誤消息框是這樣的：通過不同的方法

self.error_msg = QtGui.QMessageBox() 
self.error_msg.setIcon(QtGui.QMessageBox.critical) 
self.error_msg.setWindowTitle("Error") 
self.error_msg.setDetailedText("") 

，我嘗試調用消息盒這樣，通過設置錯誤文本：

def detectRoot(self): 
    euid = os.geteuid() 
    if euid != 0: 
     print "need to be root to run this program" 
     self.logger.error("Not root, program exited") 
     self.error_msg.setText("You need to be root to run this program") 
     self.error_msg.exec_() 
     exit(1) 

不過，我不斷收到消息的PyQt/Python的錯誤：

self.error_msg.setIcon(QtGui.QMessageBox.critical) 
TypeError: QMessageBox.setIcon(QMessageBox.Icon): argument 1 has unexpected type 'builtin_function_or_method' 

Answer 1

Accordin克至該documentation：

QMessageBox::NoIcon: The message box does not have any icon.

QMessageBox::Question: An icon indicating that the message is asking a question. QMessageBox::Information: An icon indicating that the message is nothing out of the ordinary. QMessageBox::Warning: An icon indicating that the message is a warning, but can be dealt with.

QMessageBox::Critical: An icon indicating that the message represents a critical problem.

變化QtGui.QMessageBox.critical到QtGui.QMessageBox.Critical