windows 在 Qt 项目、Visual Studio 中添加按钮单击处理程序
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Add button click handler in Qt project, Visual Studio
提问by Alex F
I have Qt SDK and Visual Studio Qt Add-In working in VS2008. I created Qt UI project with main window class MainWindow. Double-click on mainwindow.ui opens Qt Designer. Then I added push button to the window, and called it pushButton. In Signals-Slots mode I managed to connect button's clicked signal with MainWindow ButtonClicked slot. Signal/Slot editor looks like this:
我有 Qt SDK 和 Visual Studio Qt Add-In 在 VS2008 中工作。我使用主窗口类 MainWindow 创建了 Qt UI 项目。双击 mainwindow.ui 打开 Qt Designer。然后我在窗口中添加了按钮，并将其命名为按钮。在 Signals-Slots 模式下，我设法将按钮的点击信号与 MainWindow ButtonClicked 插槽连接起来。信号/插槽编辑器如下所示：
Sender pushButton Signal clicked() Receiver MainWindowClass Slot ButtonClicked()
mainwindow.ui file was changed, reflecting this new information. However, mainwindow.cpp and mainwindow.h remain unchanged. I expect to see the place where I can add my own code. So, I added this code manually:
mainwindow.ui 文件已更改，反映了此新信息。但是，mainwindow.cpp 和 mainwindow.h 保持不变。我希望看到我可以添加自己的代码的地方。所以，我手动添加了这段代码：
// mainwindow.h
...
protected slots:
void ButtonClicked();
// mainwindow.cpp
void MainWindow::ButtonClicked()
{
QMessageBox msgBox;
msgBox.setText("Clicked");
msgBox.exec();
}
It works, but I wonder whether this is correct way to do this. Is slot declaration and implementation supposed to be added manually, or I am missing something?
它有效，但我想知道这是否是正确的方法。插槽声明和实现是否应该手动添加，或者我遗漏了什么？
采纳答案by useraged
If you use signal/slot editor, you have to add these codes manually. Old Qt Add-In was automatically add these if you double click on a button from designer. Now Qt Designer is a seperate application. Double clicking is not possible.
如果您使用信号/槽编辑器，则必须手动添加这些代码。如果您双击设计器中的按钮，旧的 Qt 插件会自动添加这些。现在 Qt Designer 是一个单独的应用程序。无法双击。
Also you can use automatic connections. With automatic connections you dont need to connect signals with slots. Functions which has special naming convention, automatically called. Like on_okButton_clicked.
您也可以使用自动连接。使用自动连接，您不需要用插槽连接信号。具有特殊命名约定的函数，自动调用。喜欢on_okButton_clicked。
