Inverting Touchscreen With Raspberry PI

pi@raspberrypi:~ $ sudo xinput_calibrator –listDevice “eGalax Inc. USB TouchController Touchscreen” id=6Device “eGalax Inc. USB TouchController” id=7 pi@raspberrypi:~ $ sudo xinput_calibrator –device 6Calibrating EVDEV driver for “eGalax Inc. USB TouchController Touchscreen” id=6current calibration values (from XInput): min_x=156, max_x=3885 and min_y=3805, max_y=277 Doing dynamic recalibration:Inverting X and/or Y axis…Setting calibration data: 3877, 157, 276, 3774–> Making the... » read more

Applying A Stylesheet To All Controls In An Application – QT

Add a qss file as resource.   #include "mainwindow.h" #include <QApplication> #include <QFile> int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; // Load an application style QFile styleFile(":SpyBot/Spybot.qss"); styleFile.open( QFile::ReadOnly ); // Apply the loaded stylesheet QString style( styleFile.readAll() ); a.setStyleSheet( style ); }

Installing Qt Designer On Ubuntu

sudo apt-get install qttools5-dev-tools sudo apt-get install qtbase5-examples qtbase5-doc-html       This could happen for some projects that are not configured for cross compilıng: “Cannot run: No command given.” .pro file needs target path and install command. add proper targets and re-run qmake. # Default rules for deployment. qnx: target.path = /tmp/$${TARGET}/bin else: unix:!android:... » read more