Error in running Qt virtualkeyboard example on Ubuntu 14.04

[Kira]

Hello All,
I am trying to run the Qt virtual keyboard example on Ubuntu 14.04 using qt-5.7
I downloaded the keyboard example from github using qt creator and getting the following error.

QML debugging is enabled. Only use this in a safe environment.
qrc:/Basic.qml:31:1: module "QtQuick.VirtualKeyboard" is not installed
qtvirtualkeyboard-dev/examples/virtualkeyboard/build-basic-Desktop_Qt_5_7_0_GCC_64bit-Debug/basic exited with code 255

[Kira]

@Kira : Got the issue resolved by building the whole project again. Earlier i was building it in parts was the issue.

The response of the keyboard is quite slow in the demo application.
Is there any guide if i want to use it with widgets application.