[Qt-interest] drag and drop issue

[ami guru]

Hello forum,

Going through  the drag and drop example in Qt doc  - specifically the
puzzle example

in the the mousePressEvent() of puzzlewidget.cpp


it shows that the QDrag object calls a function named start() and i did not
find that function in the reference

At the same time i did not understand the if(drag->start(Qt::MoveAction))
and the statements inside that condition

Regards
Sajjad
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