After running a program containing the Qaxwidget control for a period of time, there are records indicating that the interface becomes stuck. Monitoring the notify of QApplication, the receiver->objectName for mouse click events is empty

[pyli]

@Pl45m4 You're right, the name is not set, but the problem is not solved. Through Microsoft SPY++ monitoring, it was found that the VM_MouseMove/Down was gone, only VM_SetCursor. UI clicks are unresponsive

[pyli]

It's like Qaxwidget control stealing the focus of the application

[hskoglund]

Maybe you can steal back to the focus by muting the control, say by calling disableEventSink on it.

[pyli]

I tried this method, and the problem mainly occurred when switching tabs. The system event is as follows
abnormal: don't have WM_MOUSEMOVE and WM_MOUSEDOWN
![alt text](![abnormal.png]
normal: have WM_MOUSEMOVE and WM_MOUSEDOWN

[pyli]

this is my class inherits from QAxWidget.

class MyChildQaxWidget : public QAxWidget
{

public:
    MyChildQaxWidget ( QWidget * parent = 0 ) : QAxWidget (parent)
    {
        this->setFocusPolicy(Qt::ClickFocus);
        this->setAttribute(Qt::WA_ShowWithoutActivating);
        this->disableClassInfo();
        this->disableEventSink();

    }

    MyChildQaxWidget ( const QString & c, QWidget * parent = 0 ) : QAxWidget (c,parent)
    {}

protected:
    void mousePressEvent ( QMouseEvent * e ) override
    {
        setFocus();
        clearFocus();
        QAxWidget::mousePressEvent ( e );
    }
    void showEvent(QShowEvent* event) override
    { 
        return QAxWidget::showEvent(event);
    }

    void hideEvent(QHideEvent* event) override
    {
        this->clearFocus();
        return QAxWidget::hideEvent(event);
    }
}; 

[pyli]

This post is deleted!

[hskoglund]

What COM object are you hosting in your MyChildQaxWidget?
If it's something like Internet Explorer, you might be better off using Qt's WebEngine instead.

[pyli]

@hskoglund Don't is IE, it is provided by third-party companies. So I'm not sure about its underlying implementation, I'm just calling it

[hskoglund]

Ok,. To get smoother experience, have you tried running dumpcpp on that control?

That way you can get QAxObject subclasses specially suited for the control, and you don' have to write your own subclass like MyChildQaxWidget.

[pyli]

@hskoglund Thank you for your reply. This control was created by a third-party company through dumppp.exe.
Here is the code I used.

class MyChildQaxWidget : public QAxWidget
{
public:
    MyChildQaxWidget ( QWidget * parent = 0 ) : QAxWidget (parent)
    {
        this->setFocusPolicy(Qt::NoFocus);
        this->setAttribute(Qt::WA_ShowWithoutActivating);
        this->disableClassInfo();
        this->disableEventSink();
    }
}

MyChildQaxWidget* QaxWid2 = new MyChildQaxWidget();
    flyResultQaxWid2->setControl(QString::fromUtf8("{313241A6-62F9-464B-BEDE-F514827E2F22}"));
    flyResultQaxWid2->dynamicCall("GetObjectPointer()");