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  1. Qt
  2. QTBUG-131001

QWidget::childAt returns empty children

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    • Windows
    • 1731d8af7 (dev), 4a27d0fe0 (6.8), deadc8b1a (6.8.1)

      Calling QWidget::childAt on a widget that has empty children (width or height is 0) can return said children. The following code triggers the assert in 6.8.0, but not in 6.7:

      #include <QApplication>
#include <QWidget>
#include <cassert>

int main(int argc, char **argv) {
  QApplication app(argc, argv);

  QWidget parent(nullptr, Qt::FramelessWindowHint);
  parent.resize(200, 200);

  QWidget *emptyChild = new QWidget(&parent);
  emptyChild->setGeometry(0, 100, 200, 0);

  assert(parent.childAt(100, 100) == nullptr);
}

       

        For Gerrit Dashboard: QTBUG-131001
        # Subject Branch Project Status CR V
        603246,5 QWidget: clamp own rect in pointInsideRectAndMask dev qt/qtbase Status: MERGED +2 0
        603440,2 QWidget: clamp own rect in pointInsideRectAndMask 6.8 qt/qtbase Status: MERGED +2 0
        603452,2 QWidget: clamp own rect in pointInsideRectAndMask 6.8.1 qt/qtbase Status: MERGED +2 0

            vhilshei Volker Hilsheimer
            nerixyz Tom Fors
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              Created:
              Updated:
              Resolved:

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