Qt设计器，缺少“转到插槽”在上下文菜单中？ [英] Qt Designer, missing "go to slot" in context menu?

问题描述

我一直在观看YouTube上的Qt教程系列，其中作者展示了当按下按钮时如何调用一个功能。 他右键点击Qt Creator IDE中的按钮，选择了转到插槽，从那里他选择将触发生成的函数的信号。由于我习惯使用Netbeans开发，我只是试图使用嵌入式Qt设计器来跟随他的例子。不幸的是，当我右键点击我的按钮或任何小部件时，没有转到插槽...条目。我可以，当然，为我的主窗口创建一个新的插槽，然后连接按钮的信号，它，但做一个单一的功能，似乎更方便和干净对我。有没有办法解决是，或者如果不是，至少一个方法来完全通过代码，而不必为主窗口添加一个新的插槽为每个按钮服务器不同的目的？感谢您的帮助。

I've been watching a Qt tutorial series on YouTube, in which the author shows how to call a function, when a button is pressed. He right-clicked on the button in Qt Creator IDE and chose "Go to slot", from where he chose the signal which would fire the generated function. Since I am used to develop with Netbeans, I simply tried to follow his example using the embedded Qt Designer. Unfortunately, there is no "Go to slot..." entry when I right-click on my button or any widget. I could, of course, create a new slot for my main window and then connect the button's signal to it, but doing it with a single function just seems way more convenient and clean to me. Is there a way to fix is, or if not, at least a way to do with via code entirely, without having to add a new slot to the main window for every single button that servers a different purpose? Thanks for your help.

推荐答案

虽然我不知道为什么Netbeans中的QtDesigner不提供此功能，该功能的作用：它只是在您的widget类中创建一个具有特殊名称的插槽。请注意，它不添加connect语句。它使用自动连接功能，其工作方式如下：

While I don't know why the QtDesigner in Netbeans doesn't provide this feature, I know what the feature does: It just creates a slot with a special name in your widget class. Note that it does not add a connect statement. It uses the automatic connection feature, which works like this:

对于符合此模式的每个插槽：

For each slot which name matches this pattern:

void on_X_Y（...）

它将连接到名为名为 X 的对象的Y 。因此，如果您有一个名为按钮的QPushButton，并且您希望处理按的信号，签名之后：

it will be connected to the signal named Y of the object named X. So if you have a QPushButton named button, and you want to handle the signal pressed, simply create a slot with the following signature:

void on_button_pressed（）

如果你想知道这个槽如何连接到信号：这发生在 setupUi（）结束处的 ui _... h code>：

If you wonder how this slot gets connected to the signal: This happens in the ui_...h file at the end of setupUi():

    QMetaObject::connectSlotsByName(WidgetName);

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