Mobile and Embedded

@sharethl Seems increase time out to 10 seconds will increase the possibility of success

@aidoru Windown10 and Ubuntu both working for me.

@Vi67 hmm. Not quite understand your first problem.

GammaRay is a good tool ,but I ended up using valgrind and the problem with our app was in the desing ,having tons of (some times useless) widgets in memory at the same time.We are redesigning our user interface now instead of trying to fix a bad design.The design was done using only Qt Widgets mostly because of a lack of expertise in mobile development and QML in particular.We hope QML will ease some of the troubles we came across :-)

This page might be helpful http://derekmolloy.ie/beaglebone/qt-with-embedded-linux-on-the-beaglebone/

This is a quick and dirty example from the top of my head. It could have been made simpler by using a lambda but so you'll see that QStackedWidget is working the way you want it. class MyDialog : public QDialog { Q_OBJECT public: explicit MyDialog(QWidget *parent=0); private slots: void gotToPage2(); private: QStackedWidget *_stackedWidget; }; MyDialog::MyDialog(QWidget *parent) : QDialog(parent) { // Create first widget QWidget *firstPage = new QWidget; QLabel *instructionLabel = new QLabel(tr("Instruction for user")); QLineEdit *userNameLineEdit = new QLineEdit; QPushButton *page2PushButton = new QPushButton(tr("Page 2")); QVBoxLayout *firstPageLayout = new QVBoxLayout(firstPage); // automatically set the layout on the widget firstPageLayout->addWidget(instructionLabel); firstPageLayout->addWidget(userNameLineEdit); firstPageLayout->addWidget(page2PushButton); // Create second widget QWidget *secondPage = new QWIdget; QLineEdit *firstNameLineEdit = new QLineEdit; QLineEdit *lastNameLineEdit = new QLineEdit; QPushButton *endPushButton = new QPushButton(tr("End")); QVBoxLayout *secondPageLayout = new QVBoxLayout(secondPage); secondPageLayout->addWidget(firstName); secondPageLayout->addWidget(lastNameLineEdit); secondPageLayout->addWidget(endPushButton); _stackedWidget = new QStackedWidget; stackedWidget->addWidget(firstPage); stackedWidget->addWidget(secondPage); connect(page2PushButton, &QPushButton::clicked, this, &MyDialog::goToPage2); } void MyDialog::gotToPage2() { stackedWidget->setCurrentIndex(1); } Note that you could also be interested by QWizard

Hi, 4.7.3 vs 5.1.0 are a bit too far apart

Fu**** stupid me. At the second i clicked submit, i came to the idea, to check at which intervals the frames are send. It was 10ms. Too fast as it looks like. Changed it to 20ms and everything is perfect...

@kuzulis Thanks a lot for the screenshot. very useful. pardon me because of lots of my questions. I got new error: Could not start process "mingw32-make" INSTALL_ROOT="C:\Users\---\Documents\build-alaki1-Android_for_armeabi_v7a_GCC_4_8_Qt_5_5_0-Release\android-build" install Error while building/deploying project alaki1 (kit: Android for armeabi-v7a (GCC 4.8, Qt 5.5.0)) When executing step "Copy application data" I searched and somebodies says you must set INSTALL_ROOT variable. I dont know it is correct or not? if so how?

@benlau Thx.

Hi. I think most of your requirements rely more on the operating system than on Qt. The only problem I see is the virtual keyboard. The one Qt has is available only under a commercial license. If you don't have one, you would have to make your own. It's boring, but it can be done. Of course it will not be easy at first, as you have no previous with Qt or C++, but once you learn it, you'll have a major advantage for future projects.

Why are you creating the table each time you try to store the image? In the code you provided you commented out //img=ui->lineEdit->text(); that means you're trying to store an empty string.

Fixed: Uncheck shadow build from the project build settings.