OpenCv QT CvNamedWindow IplImage not working

Posted by Shahzaib on Stack Overflow See other posts from Stack Overflow or by Shahzaib
Published on 2010-06-15T16:26:14Z Indexed on 2010/06/15 17:02 UTC
Read the original article Hit count: 277

Filed under:

qt

|

visual-c++

|

opencv

|

freeze

|

hanging

I have problem with displaying Cam on QTLabel using openCV, Every thing is working fine . except one . I have to call function from open === cvNamedWindow() == in order for program to work properly . its displaying the webcam on the QLabel no problem but if i don't call the cvNamedWindow function then the program is just hanging its just keep displaying the camera which are working on the screen but i can't click on any thing else its getting freeze. doest any one has any idea why its happening and what i am doing wrong ?

© Stack Overflow or respective owner

Related posts about qt

qt cannot open input file 'c:\Qt\qt\lib\qtmaind.lib'

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am using qt 4.5 I have created a project and I want to compile on visual studio 2008 for windows mobile 6.0 So I have created the project files doing this: D:\Projects\Phone_PDA\Phone_PDA>set QMAKESPEC=win32-msvc2008 D:\Projects\Phone_PDA\Phone_PDA>qmake -tp vc The VS project was… >>> More
Qt Linking Error.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I configure qt-x11 with following options ./configure -prefix /iTalk/qtx11 -prefix-install -bindir /iTalk/qtx11-install/bin -libdir /iTalk/qtx11-install/lib -docdir /iTalk/qtx11-install/doc -headerdir /iTalk/qtx11-install/include -datadir /iTalk/qtx11-install/data -examplesdir /iTalk/qtx11-install/examples… >>> More
To connect Gstreamer with Qt in order to play a gstreamer video in the Qt Widget

as seen on Stack Overflow - Search for 'Stack Overflow'
I tried using phonon to play the video but could not succeed. Off-late came to know through the Qt forums that even the latest version of Qt does not support phonon. Thats when i started using Gstreamer.Any suggestions as to how to connect the Gstreamer window with the Qt widget?My aim is to play… >>> More
How to mix C++ Qt objects and Qt Jambi objects

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to combine some existing Qt code written in C++ with some code written in Java using Qt Jambi, but I'm not quite sure how to do it. I'm basically trying to acieve two things: Pass a QObject from C++ to Java using JNI Pass a Qt Jambi QObject from Java to C++ It looks like I can… >>> More
La rubrique Qt sur Facebook, devenez vous aussi fan et suivez l'actualité Qt depuis Facebook

as seen on Developper.com - Search for 'Developper.com'
Comme vous l'avez probablement remarqué, les réseaux sociaux explosent de partout, Developpez.com et toutes ses rubriques se doivent donc, comme toujours auparavant, de suivre l'évolution en s'ouvrant à ces réseaux sociaux. Vous pouvez donc désormais suivre l'actualité de la rubrique sur Facebook… >>> More

Related posts about visual-c++

The Visual Studio development environment crashes when you open Visual Studio 2005, Visual Studio 20

as seen on Dot net Slackers - Search for 'Dot net Slackers'
983279 ... The Visual Studio development environment crashes when you open Visual Studio 2005, Visual Studio 2008, or Visual Studio 2010This RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies… >>> More
The Visual Studio development environment crashes when you open Visual Studio 2005, Visual Studio 20

as seen on Dot net Slackers - Search for 'Dot net Slackers'
983279 ... The Visual Studio development environment crashes when you open Visual Studio 2005, Visual Studio 2008, or Visual Studio 2010This RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies… >>> More
Working with Subversion the same as with Visual Source Safe in Visual Studio

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, At work I just started using subversion with ankhsvn instead of visual source safe. I managed to integrate it well enough but it doesn't seem the same. Using VSS the following would happen: A user check out a file by right clicking and selecting "check out" or by editing it. If another user… >>> More
C# development with Mono and MonoDevelop

as seen on Developer IT - Search for 'Developer IT'
In the past two years, I have been developing .NET from my MacBook by running Windows XP into VM Ware and more recently into Virtual Box from OS X. This way, I could install Visual Studio and be able to work seamlessly. But, this way of working has a major down side: it kills the battery of my laptop…… >>> More
ASP.NET MVC 2 Released

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
I’m happy to announce that the final release of ASP.NET MVC 2 is now available for VS 2008/Visual Web Developer 2008 Express with ASP.NET 3.5. You can download and install it from the following locations: Download ASP.NET MVC 2 using the Microsoft Web Platform Installer Download… >>> More