显示窗口后如何调用函数?

问题描述

使用 Qt 我创建了一个 QMainWindow 并想在窗口显示后调用一个函数.当我在构造函数中调用该函数时，该函数(实际上是一个对话框)在窗口显示之前被调用.

Using Qt I create a QMainWindow and want to call a function AFTER the windows is shown. When I call the function in the constructor the function (a dialog actually) get's called before the window is shown.

推荐答案

如果您想在小部件可见时做某事，您可以覆盖 QWidget::showEvent 像这样:

If you want to do something while the widget is made visible, you can override QWidget::showEvent like this:

class YourWidget : public QWidget { ...

void YourWidget::showEvent( QShowEvent* event ) {
    QWidget::showEvent( event );
    //your code here
} 

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