How to get the widget in QLayout under the mouse by Drag&drop?

Question

I build a widget which accepts drag&drop as follows:

MyWidget::MyWidget( QWidget *p_parent ) : QFrame( p_parent ) { setAcceptDrops( true ); m_layout = new QLayout( this ); //this is layout of my custom widget layout->setSpacing( 0 ); m_indicator = new QWidget( this ); m_indicator->setObjectName( "indicator" ); m_indicator->setFixedWidth( 5 ); layout->addWidget( m_indicator ); .... .... } void MyWidget::dragMoveEvent( QDragMoveEvent *p_event ) { p_event->acceptProposedAction(); }

My main job is to insert the dragged object into the layout, therefore, I should identify which item is under the mouse, and do my job after that. In function dragMoveEvent above, I can do p_event->pos() to get the position of the mouse. But QLayout does not have method itemAt(int x, int y). What should I do now?

@hyde: thank you, I just too focused on the layout, and forget about the parent widget :) — gnase
– gnase, Commented Apr 20, 2020 at 15:17

hyde · Accepted Answer · 2020-04-20 15:54:05Z

Layouts can't do that, but fortunately the parent widget can. Example code (untested):

void MyWidget::dragMoveEvent( QDragMoveEvent *p_event ) { auto *widget = childAt(p_event->pos()); if(widget) { .... }

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