QMessageBox阻止QDialog [英] QMessageBox blocks QDialog

问题描述

我真的不知道如何制定我的问题...

我有我的应用程序与一个QDialog作为主窗口。
应用程序从远程机器获得不同的值，如温度，湿度等。

对于开发，我添加了一个包含不同小部件的组件框来模拟这些值。例如，如果温度上升超过30°C，我打开一个QMessageBox的请求时间（应用程序不会在远程机器上查询）和当前温度。所以这是更新每个请求周期。

我使用show（）方法调出消息框，使我的应用程序在后台运行。现在的问题是：重点是在消息框，我的主窗口/ QDialog中的任何东西都可以被点击，直到消息框不被接受/已经完成。

这是我的问题：在模拟模式下，我想玩弄不同的温度值，我可以通过主窗口中的滑块进行调整。我怎样才能访问这些小部件/让消息框以某种方式不阻塞？

最好的问候，

Matthias

解决方案

您正在经历的是窗口的模态。默认情况下， QMessageBox 是应用程序模式。这意味着输入到所有其他应用程序窗口被阻止。

要改变模式，请使用 setWindowModality（），其值为 Qt :: WindowModality ）。在你的情况：

  box-> setWindowModality（Qt :: NonModal）; 
 box-> show（）; 
  

I don't really know how to formulate my question this time...

I have my application with a QDialog as a main window. The application is getting different values like temperature, humidity and so on from a remote machine.

For development I added a group box with different widgets to simulate these values. I have different limits for throwing warnings and alarms to the user.

For example if temperature rises over 30°C then I open a QMessageBox with the request time (the application does polling at the remote machine) and the current temperature. So this is updated each request cycle.

I use the show() method to bring up the message box which keeps my application running in background. The problem now is: the focus is at the message box and nothing in my main window/ QDialog can be clicked until the message box is not accepted/ has finished.

And that's my problem: in simulation mode I want to play around with different temperature values which I can adjust by slider in the main window. How can I access these widgets/ make the message box somehow "not-blocking"?

Best regards,

Matthias

解决方案

What you're experiencing is called "modality" of a window. By default, a QMessageBox is "application modal". This means that input to all other application windows is blocked.

To change the modality, use setWindowModality() with a value from Qt::WindowModality just before you call show(). In your case:

box->setWindowModality(Qt::NonModal);
box->show();

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