the qt qtreewidget to use an example, to add a node to the Click event handler.

treewidget\debug\main.o
..........\.....\moc_treewidget.cpp
..........\.....\moc_treewidget.o
..........\.....\treewidget.exe
..........\.....\treewidget.o
..........\main.cpp
..........\Makefile
..........\Makefile.Debug
..........\Makefile.Release
..........\treewidget.cpp
..........\treewidget.h
..........\treewidget.pro
..........\treewidget.pro.user
..........\debug
..........\release
treewidget

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