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Qt/C++ (and whatever else you tell me I need) to create a variable number of...

Hello everyone! I’m new to Qt but I’ve spent years programming with Python, php and designing Web user interfaces with CSS. I’m learning Qt/C++ to develop a new application for Ubuntu Touch using...

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Trouble with SDL

I’m trying to help a friend with a problem. When debugging the program I get the error “LNK1104: cannot open file ‘SDL.dll.lib’ From what I can tell everything is referencing the right file. #Windows...

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Deleting QSslSocket obj causes crash.

Hi was wondering if anybody understands this problem I am seeing. I have a simple SSL client and server. Connection is fine. Communication is fine. When the client disconnects the server needs to...

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Problems with Tutorials

Hey guys, First post! I’m trying to get comfortable with Qt Creator by running through the tutorials. The first tutorial is fine, the program compiles and exits with error code 0. But now I’m onto the...

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How to enable C++0x on QtSDK with MinGw Compiler?

I’m trying to use <regex> on Qt creator but when I include header file or try to use some regex functions i get this message:  *#error This file requires compiler and library...

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Resizable Slider widget aka Range Indicator

I want a widget to specify a date range. It should look like a slider with two handles. I know there is QxtSpanSlider but it does not fit in my requirements. What I need is a slider with two handles...

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Static build for SQL plugin

Howdy, How can I build Qt statically under Windows with -qt-sql-psql parameter (I always get error because of missing Postgresql paths)? P.S. I successfully built static edition of Qt with -qt-sql-psql...

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Play sound

I needed to play short sound (1-3 sec) from url I used QSoundEffect QSoundEffect* player = new QSoundEffect;...

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Getting Invalid RPC error when using QNetworkAccessManager How to fix it?

Here is my code: It’s getting an error at line 7 of: As a popup window error shows: Exception Triggered The inferior stopped because it triggered an exception. Stopped in thread 0 by: Exception at...

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LNK4099 and QAxContainerd.dll

Hi This bug report: https://bugreports.qt-project.org/browse/QTBUG-2024 says: A workaround is to rebuild the ActiveQt libraries manually: cd c:\qt\4.4.0\src\activeqt qmake nmake I’ve done that – then...

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Error when compile : 1: error: cannot find -lGL 2: ld returned 1 exit status

I have a simple program for testing the istallation of Creator, but when i compile the program, lauch this message and can’t run. i work on xubuntu 1: error: cannot find -lGL 2: ld returned 1 exit...

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Problems with my Executable file.

I developed a little application but after trying it on other pc images doesn’t show up, I did a resource added images to my app and stuff like that, any idea why it doesnt show on other pcs but it...

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Linker fails using qt-project built standalone with a strange error

Hello There, I just hope someone can help me since this issue gets really miserable. What I have done: 1. Downloaded “Qt 5.1.0 for Linux 64-bit (416 MB)” from http://qt-project.org/downloads 2....

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Using in Windows, Linux, iOS, Android

Hello there, I am developing a UI that should work in different operating systems. The plan is to support Windows, Linux, iOS and Android. Does UI’s developed using QT supports all the 4 above...

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Errors when accessing Qt-based program through X11 in new Fedora

This might not be the correct forum, but I’m in trouble with a Qt-based program running on RHEL5 host, that gives me errors when I start it from a new installed Xserver (Fedora 19 client machine) I...

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QButtonGroup::checkedId () outputs uncommon result

I have 3 RadioButtons within a groupbox. Then I create a QButtonGroup which consist those RBs. when I execute below code I got result as -2 ,-3 , -4 according to the checked button. qDebug()...

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QMdiArea Crash Segmentation fault

Hi, i have an application built on python and PyQt with many forms, and i just switched it from the old QWorkspace to QMdiArea. i am openning forms with this code: def addSubWindow(self, form):...

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Qt 5.1 installing mysql plugin.

I’ve been having a lot of trouble getting mysql plugin to work so that I can access an online sql database. I’m new to programming and especially Qt. Would appreciate any help.

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Question on Qt example "boxes"

I am trying integrating graphics – view framework with OpenGL. Qt’s example called “boxes” ( which located in $${QT_DIR}/example/widgets/graphicsview/boxes) is so good and include many functionalities...

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[SOLVED] Notification when a QDialog gets closed

Hello, I have a class that has it’s own UI, as well as several different further QDialogs. Like this: namespace Ui { class MyClass; }   void MyClass : public QDialog {    ...

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