qt - 试图获取窗口的屏幕截图

Question

我正在尝试运行此代码:

QPixmap ss = QScreen::grabWindow((WId) FindWindow(NULL, L"Blacklight Retribution"));
ss.save("haystack.png", "png");

但我收到此错误:

error: C2352: 'QScreen::grabWindow' : illegal call of non-static member function

Answer 1

你可以尝试这样的事情:

QScreen *screen = QGuiApplication::primaryScreen();
if (screen)
{
    QPixmap ss = screen->grabWindow((WId) FindWindow(NULL, L"Blacklight Retribution"));
}