qtcreator gdb boost rtti
I’ve strange runtime warning RTTI symbol not found for class 'boost::signals2::signal<void (bool, std::string const&), boost::signals2::optional_last_value<void>, int,...
View ArticleQML: Access parent attributes in setProperty
I have a QML application that can be updated through a Lua environment. I wish to be able to set relative attributes of a element, such as: updateQML(“gaugeFront”, “width”, “parent.width”) I can update...
View ArticleBuilding Qt 5.x with Visual Studio 2013
I tried for several hours yesterday to get Qt 5.1.1 to build with Visual Studio 2013 and I either was getting weird errors with OpenGL references, even when I specificed -no-opengl, or errors in Angle,...
View ArticleAndroid Threads
Hallo, ich nutze Qt 5.2 RC1 mit Android SDK 4.4 API19 und NDK r8e. Ich habe ein einfaches Testprogramm mit GUI Thread und einem Hintergrund Thread. Läuft eigentlich gut, aber sobald der Bildschirm...
View ArticleAndroid Threads
Hi, I am using Qt 5.2 RC1 with Android SDK 4.4 API19 and NDK r8e. I have a simple test program with GUI thread and worker thread. Everything works fine, but while automatic screen lock (screensaver)...
View ArticleWhy Rectangle.radius is so performance expensive?
I’m on Qt 5.2-beta1 with EGL render on an x86-based system running Linux. With square rectangles the perormance is alright. But just as soon as I add raduis: N , it drops to nowhere. I had to remove...
View ArticleSmooth repaint
Hi! I have elemens hierarchy like this: RootItem.qml import QtQuick 2.0 Flickable { id: flickable...
View Articleqextserialport error: qwineventnotifier_p.h file not found
Hi! I am new to QT and i cant make a project to compile maybe because of the broken “qwineventnotifier_p.h” file i am using qextserialport-1.2rc Here is the compile output: 02:04:22: Running build...
View Articleqextserialport error: qwineventnotifier_p.h file not found UNABLE TO COMPILE
Hi! I am new to QT and i cant make a project to compile maybe because of the broken “qwineventnotifier_p.h” file i am using qextserialport-1.2rc . Here is the compile output: 02:04:22: Running build...
View ArticleAndroid - using Local Storage
Hi, I have trouble importing Local Storage module on my google nexus 7 (2013), Android 4.4. I am using Qt 5.2.0, 3.0.0-rc1. Creating a Hello World app import QtQuick 2.0 import QtQuick.LocalStorage 2.0...
View ArticleOnline Installer and Updates
Why is there no online installer for snapshots (e.g., betas and rcs) like there is for official releases (e.g., qt-windows-opensource-1.4.0-x86-online.exe)? There are 7 different downloads available...
View ArticleNo Debugger Set Up
Hi!! I have just started using qt. I was trying to run a open gl application in qt compiler. But the problem is that it shows No debugger setup .I want to debug the code. I have seen other posts in...
View ArticleHow to build older version from source (5.1.1)
Hello, I have successfully built and run qt5.2, but how can I can I build and run 5.1.1? When I tried I think the big problem was that “perl init-repository” would get 5.2 source even if I moved the...
View Articledeployment fails in Qt5.2-rc1, androiddeployqt.exe exited with code 14
… Detecting dependencies of application. Reading dependencies from E:/build-guysimple-Android_for_armeabi_v7a_GCC_4_8_Qt_5_2_0-Debug/libguysimple.so lib/libQt5Core.so ‘/*’ is not recognized as an...
View ArticleUpdating QLineEdit Text Causing Crash
Hi, Qt beginner here…I’m using Qt Creator 2.8.1 with Qt 5.1.1 on Ubuntu 12.04. Part of the app I’m writing is a file uploader and I’m trying to create a slot so that when the user selects a file, the...
View ArticleForum listings - What does the gray or black thread listing mean?
Why are many listings gray? (Why are mine gray? :-) ) Thanks
View ArticleQLabel - setAlignment not working on image
Hi, I’m trying to achieve a simple layout [QLabel1 (image)] [QLabel2] [Widget here ——————— ] The layout works when QLabel1 is displaying some text, but when I show an image in the QLabel using...
View Articlehow to delete pointers before main() exits ?
Consider the next code: int main(int argc, char *argv[]){ QApplication app(argc, argv); QWidget * mainWindow = new QWidget; mainWindow->show();...
View Articleاستفاده خودکار QMediaPlayer از DirectVobSub مربوط به ابزار های K-Lite Codec...
سلام دوستان . کسی با این QMediaPlayer کار کرده ؟ چطور plugin ها رو پیدا و لود میکنه و چطور میشه جلوش رو بگیری از پلاگ این ها استفاده نکنه؟ مشکل این هست که بطور خود کار QMediaPlayer زیرنویس را نمایش...
View ArticleSimple problem: building QtSerialPort, no qlockfile.h
Hi all. I am on Ubuntu 13.10, using QT Creator 2.7.1 (Qt version 5.0.2) to do some development. I want to use serial ports, so I am installing QtSerialPort using the official instructions...
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