你可以在 QDialog 中添加一个工具栏吗?

2022-01-17 00:00:00 qt modal-dialog qmainwindow c++ qdialog

我正在开发一个项目，该项目需要调用带有工具栏的模式窗口，以便在加载之前对某些数据进行一些处理.我需要工具栏的原因是用户有几个不同的可能选项可以组合.

I'm working on a project that needs to call a modal window with a toolbar to do some work on some data before it's loaded. The reason I need the toolbar is the user has a few different possible options that can be combined.

这里明显的选择是模态对话框(我现在正在使用它).问题是我想要一个工具栏.这是一个两部分的问题:

The obvious choice here is a Modal dialog (which I have working right now). The issue is I want a toolbar. This is a two part question:

  1. 是否可以在 QDialog 中添加工具栏?(在 Qt Designer 中也可以这样做吗?)
  2. 如果 1. 不可能，我该如何制作 QMainWindow 模态?
  1. Is it possible to add a toolbar to a QDialog? (also is it possible to do this in Qt Designer?)
  2. If 1. is not possible, how can I make a QMainWindow modal?

推荐答案

如果你不需要QMainWindow的工具栏的内置拖放功能，你可以简单地在任何布局中添加一个QToolBar，包括QDialog的layout().有关详细信息，请参阅下面的 DigviJay Patil 的回答，这在概念上绝对更简洁.

If you don't need the built-in drag and drop feature of QMainWindow's toolbars, you can simply add a QToolBar to any layout, including QDialog's layout(). See the DigviJay Patil's answer below for details, which is definitely cleaner conceptually.

否则，请继续阅读.

  1. 不可能直接在 QMainWindow::addToolBar() 意义上将 QToolBar 添加到 QDialog，因为QDialog 仅继承 QWidget 而不是 QMainWindow，正如您所指出的(因此没有方法 addToolBar())

  1. It is not directly possible to add a QToolBar to a QDialog in the QMainWindow::addToolBar() sense, because QDialog inherits only QWidget and not QMainWindow, as you noted (hence do not have the method addToolBar())

你不能创建一个 QMainWindow 模态，但是你可以在 QDialog 中插入一个 QMainWindow:p>

You can't make a QMainWindow modal, but you can insert a QMainWindow in a QDialog this way:

代码:

MyDialog::MyDialog() :
    QDialog()
{
    QMainWindow * mainWindow = new QMainWindow(); // or your own class
                                                  // inheriting QMainWindow

    QToolBar * myToolBar = new QToolBar();
    mainWindow->addToolBar(myToolBar);

    QHBoxLayout * layout = new QHBoxLayout();
    layout->addWidget(mainWindow);
    setLayout(layout);
}

确实，QMainWindow 不一定是顶级小部件，您甚至可以插入多个 QMainWindow 作为单个小部件的子级(可能但这不是最明智的选择，因为用户可能会对单独的菜单栏、工具栏、停靠小部件等集感到困惑).

Indeed, a QMainWindow doesn't necessarily have to be a top-level widget, and you can even insert several QMainWindows as children of a single widget (may not be the wisest choice though, as the user would probably be confused with the separate sets of menu bars, toolbars, dock widgets, etc.).

相关文章