Problem description

The qvtkwidget control is used in QT’s interface. When clicking the close button in the upper right corner of the window, an error is reported: wglmakecurrent failed in makecurrent(), error: the handle is invalid .

Solution:

By overriding the void closeevent (qcloseevent * event) function, manually delete all qvtkwidget type controls, and then close the window.

Example

The qvtkwidget type controls in the QT design interface are as follows:

mymainwindow. H

class MyMainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MyMainWindow(QWidget *parent = Q_NULLPTR);
protected:
	void closeEvent(QCloseEvent *event); 
private:
    Ui::MainWindow ui;
};

mymainwindow.cpp

MyMainWindow::MyMainWindow(QWidget *parent): QMainWindow(parent)
{
    ui.setupUi(this);
}

void MyMainWindow::closeEvent(QCloseEvent *event) {
	delete ui.qvtkWidget;
	delete ui.qvtkWidget_2;
	delete ui.qvtkWidget_3;
	delete ui.qvtkWidget_4;
	event->accept();
}

Postscript

I don’t know whether such hasty delete processing will cause other problems. I hope you can make more corrections.