如何在pyqt MessageBox中使用变量

Question

如果要将数据添加到数据库，我正在使用 MessageBox 获取用户输入，但我不知道如何将我的变量放入实际消息中。 MessageBox 函数如下所示：

def message(self, par_1, par_2):
    odp = QMessageBox.question(self, 'Information', "No entry. Would you like to add it to DB?", QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
    if odp == QMessageBox.Yes:
        return True
    else:
        return False

函数是这样调用的：

self.message(autor_firstname, autor_lastname)

我尝试添加：

odp.setDetailText(par_1, par_2)

但它没有按预期工作。此外，当用户单击 "No" 时，我遇到了问题。程序崩溃而不是返回主 window.

Answer 1

根据 the docs on QMessageBox::question, the return value is the button that was clicked. Using the static method QMessageBox::question limits how you can customize the QMessageBox. Instead, create an instance of QMessageBox explicitly, call setText, setInformativeText, and setDetailedText as needed. Note that your arguments also do not match what is needed for setDetailedText. Those docs are here。我认为您的代码应该看起来像这样。

def message(self, par_1, par_2):

    # Create the dialog without running it yet
    msgBox = QMessageBox()

    # Set the various texts
    msgBox.setWindowTitle("Information")
    msgBox.setText("No entry. Would you like to add it to the database")
    detail = "%s\n%s" % (par_1, par_2) # formats the string with one par_ per line.
    msgBox.setDetailedText(detail) 

    # Add buttons and set default
    msgBox.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
    msgBox.setDefaultButton(QMessageBox.No)     

    # Run the dialog, and check results   
    bttn = msgBox.exec_()
    if bttn == QMessageBox.Yes:
        return True
    else:
        return False

Answer 2

这也可以解决你的问题：

def message(self, par_1, par_2):
    # Create the dialog without running it yet
    msgBox = QMessageBox()

    # Set the various texts
    msgBox.setWindowTitle("Information")
    msgBox.setText("No entry for '"+str(par_1)+" "+str(par_2)+"'.Would you like to add it to the database")
    

   # Add buttons and set default
   msgBox.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
   msgBox.setDefaultButton(QMessageBox.No)     

   # Run the dialog, and check results   
   bttn = msgBox.exec_()
   if bttn == QMessageBox.Yes:
      return True
   else:
      return False

第 6 行没有使用字符串连接。

如何在pyqt MessageBox中使用变量

How to use variable in pyqt MessageBox

python

user-interface

pyqt

qmessagebox