Hi, I'm searching for a function who can give me the last widget activated. I call a widget activated a widget who has focus with the mouse, tab, or keyboard. For beginning, just with the mouse. A little example : In both squares, I have a QTabWidget who contain two tabs. In my class, I have a variable "currentLayout" and a static accessor for this variable. In this same class, I want to have a function, that change, when is necessary, the variable "currentLayout". I have already try focusInEvent and mousePressEvent but with these functions, they are called when I pressed a button of my mouse inside the square, but outdoor the content of the tab. If I press my mouse in the middle of the square, the function is not called. There is a solution?

@ mrjj Hi yes but I have some problems with qobject_cast : "Error C2338 qobject_cast requires the type to have a Q_OBJECT macro" But in my class, I have the macro : class ProjectManager : public QObject { Q_OBJECT public: // Some function... template <class T> T findParent(QObject *child) { T r = nullptr; if (!child) return nullptr; QObject *parent = child->parent(); while (parent) { r = qobject_cast<T>(parent); if (r) return r; parent = parent->parent(); } return r; } };

I found this signal : QApplication::focusChanged(QWidget *old, QWidget *new) And it's work for what I want to do. But, this function sends me the most little child of all my widgets. So I have implemented this function : template <class T>T findParent(QObject *child) { T r = 0; if (!child) return nullptr; QObject *parent = child->parent(); while (parent) { r = dynamic_cast<T> (parent); if (r) return r; parent = parent->parent(); } return r; } And it's working with "findParent<LayoutPanelTabber *>(new);" Thanks

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get the last QWidget actived

Solved Qt Creator and other tools

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SGaist
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And is that type a QObject based class with Q_OBJECT in it's declaration ?

@bozo6919 said in get the last QWidget actived:

class __declspec(dllexport) LayoutManager : public QObject

On a side note, Qt provides macros to properly handle the export/import stuff. See here.
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