Please help me to check this simple project,thanks!

[rainspider]

In this project,I want to connect a QLineEdit's doubleclick to a QCalendarWidget's modal-show[a mainwindow's method name of selectdate] .but i can't find this signal,so i connect it to a button's click occasional .has any better methods?
When i launch the app, the Calendar can show currently.next,i want connect the Calendar's
double click to change LineEdit's text and close it[a mainwindow's method name of setlineeditdate],but it don't work,why?
Thanks !

[spirit]

you can install event filter on your calendar widget and catch double-click or you can sub-class QCalendarWidget and reimplement mouseDoubleClickEvent.

[spirit]

btw, fix you connection, it should look like

...
connect(calendar,SIGNAL(activated(const QDate&)),this,SLOT(setlineeditdate(const QDate&)));
...

...
connect(calendar,SIGNAL(activated(const QDate&)),this,SLOT(setlineeditdate(const QDate&)));
...

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