Qt模态对话框和主要过程 [英] Qt modal dialog and main process

问题描述

我有一个程序在主窗口中执行一些过程，我需要一个模态对话框，上面带有一些自定义元素，以显示进度.它还必须阻止用户与主窗口的交互.显示对话框时，主进程应运行. 为此，在qt中哪种方法更好?

I have a program which executes some process in main window and I need a modal dialog with some custom elements to be shown over it to show the progress. It also must block user interaction with main window. Main process should run while dialog is shown. Which way is better (in qt) for this purpose?

推荐答案

实际上，这听起来有点简单(除非我误解了您的问题).

Actually, this sounds kinda easy (unless I misunderstand your question).

QDialog my_progress_dialog( this );
my_progress_dialog.setModal( true );
my_progress_dialog.show();

调用show()而不是exec()将使您进入主事件循环.同时，设置对话框模式会阻止所有用户输入到主窗口.工作完成.

Calling show() not exec() will leave you in the main eventloop. At the same time, setting the dialog modal blocks all user input to the main window. Job done.

您看过QProgressDialog吗?正是出于这个目的.

Have you looked at QProgressDialog? It's there for exactly this purpose.

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