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#ifdef _WIN32
#include <windows.h>
#include <QWidget>
#include <QRect>
#include <QDebug>
#include <QPoint>
#include <initializer_list>
template<typename=void>
bool is_window_visible(const QWidget* widget)
{
const QWidget* window = widget->window();
if (!window)
return true;
const QPoint p = widget->mapToGlobal(QPoint(0, 0));
const QSize s = widget->size();
const std::initializer_list<POINT> points =
{
{ p.x(), p.y() },
{ p.x() + s.width(), p.y() },
{ p.x() + s.width(), p.y() + s.height() },
{ p.x(), p.y() + s.height() },
{ p.x() + s.width()/2, p.y() + s.height()/2 },
};
for (const POINT& pt : points)
if (WindowFromPoint(pt) == (HWND) widget->winId())
return true;
return false;
}
#else
template<typename=void>
bool is_window_visible(const QWidget* widget) { return true; }
#endif
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