Compiler errors after transition from Qt4.x project to Qt5.x on OSX
I’ve tried to change a project that just runs/compiles fine with Qt4.8.x (gcc and clang) to Qt5.0.x (tried clang 5.0.1 and clang 5.0.2). Checked for changes to .PRO file from...
View ArticleUsing Qt and OpenCV to display videos
Hi guys, I am using Qt and openCV to display some videos. Everything works fine except that the video displays very fast! I thought it could be a problem with the frame rate definition in openCV, but...
View ArticleVxWorks process (RTP) mode does not have taskLock/taskUnlock functions
I am trying to build the QT UI application as Vxworks RTP project and i get taskLock/taskUnlock as undefined symbols. Is there a fix for this or any patch that i need to install. THanks, Ram
View ArticleDifferent OS's, different font sizes?
Maybe this is naive of me, but is it expected for fonts to render much smaller on OSX than on Windows? I have a QML application that runs on both Windows (7) and OSX (10.8). I’m using the same font on...
View ArticleQNetworkAccessManager consistency
Two questions about QNetworkAccessManager (Qt 4.8): 1) In code like the following (apologies for typos, not real code): ... { QNetworkAccessManager *nam = ...; ...
View ArticleQDeclarativeView and the QML debugger
I’ve found something a bit strange. On OSX, under some circumstances, when I destroy a QDeclarativeView and then try to create a new one, my process hangs inside of QDeclarativeView’s constructor....
View ArticlePlease help , I am new in qt ~simple program
Please help … I am coming from Java and new in qt and c++ I am getting these errors //I skipped to copy those parts of my code in which compiles properly main.obj:-1: error: LNK2019: unresolved...
View Articlecollect2.exe: error
Hi Have a nice day,I need some help when i debug my application its display this 2 errors but still i haven’t any idea about that errors please anyone have solutions for that please help me to solve...
View ArticleQt SSL - Certificate verification callback function
How do I set certificate verification callback function using Qt? The openssl API to do this SSL_CTX_set_cert_verify_callback().
View Articleqwtplot curve orientation problem
I am a newbie to Qwt, for some reasons, I had to use it to draw some tech-plot. However, as far as I know, qwtplot can only plot curve from the left to the right or, the right to the left. In my...
View ArticleHelp me on Andoid development (Qt Version Missing)
I just downloaded Android SDK, NDK and want to configure for Android Development but I got a warning. “Qt versions for architectures x86, arm, mips are missing” Here’s the screen snap: What can I do now ?
View Articlea simple question about Qt5.0.2: CDLPShareMemConfig::Close()
The output message: Init CriticalSection spin count CDLPShareMemConfig::Close()CDLPShareMemConfig::Close()TSWebDownLoadProtect.dll is Load failedTSWebMon.dat is Load failedDelete CriticalSection spin...
View ArticleOpen link in default browser from Qtextbrowser
I search google to find this solution. but i was confused how to solve this problem. In MainWindow.ui i drag & drop QTextBrowser. here i put someText where there is hyperlink. After compliling...
View Article[Solved]Signal slot mechanism across classes not working
I have a big application i am working on lately,and I am focusing on GUI customization.In the gui classes of the project I have a pushbutton that I use to trigger a mechanism that is implemented in...
View ArticleQQuickShaderEffect class in C++ (ShaderEffect)
Hi! I want to manage ShaderEffect item from C++. But I can’t include QQuickShaderEffect. Which one I should to use for this?
View ArticleThe chinese charater display in unrecognized characters in the html which...
I would like to use qdoc to generate a html document.I writed comments in .cpp files according to “QDoc Top Command”, so the comments I writed to function ,class ,enum etc. in the .cpp files which...
View ArticleQt 5.0.2 qmake problem
I have two computers at home and at work. When I install Qt 5.0.2 at work, qmake has errors. When qmake generate Makefile, it does not insert QTDIR in somewere. At home all work. System version and...
View Article-no-webkit - does this actually work?
I’m trying to build Qt 4.8.4 on OSX. I’m invoking the following to do so: ./configure -opensource -confirm-license -arch x86 -sdk...
View ArticleSupply my own parameter (different from the Signal) to the Slot
I would like to supply my own parameter (different from the Signal) to the Slot. I know this code doesn’t work, but perhaps it illustrates the idea of what I am trying to accomplish. QAction* a; a =...
View ArticlePreprocessor macros
Hi everyone. Can someone explain to me the purpose of the Q_QUICK_AUTO_EXPORT and the Q_QUICK_PRIVATE_EXPORT macros. Thank you in advance.
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