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A group for the Indian Qt Developer community. To learn, discuss and showcase Qt apps, ask questions, troubleshoot and help each other. All other members are also welcome to join.
Founder: Deleted Member # 4a2
Members: 640
Category: Regional
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This is an overview of the latest updated topics, visit the full forum here.


Qt Quick app on WP8: Shaders not compiling

by: dsanjit | Views: 30 | Forum: India

Hi !
I am writing a 2D game and need to deploy on Windows Phone, iOS and Android. My prototype runs well on Android and Desktop/Mingw but no matter what I do I just cannot deploy on a Windows Phone – the shaders dont compile. I have VS2012 for Windows phone as well as VS2013 Desktop, Store and the Pro version along with all the other SDKs. I ran qmake -tp VC CONFIG= ….. and got the game to build fine on VS2012 for WP (also compiles in VS2013-Pro/WP8). I run QtD3dservice and it recognizes my Nokia Lumia on Device 0 and lists the apps in there. But when I hit run the shaders dont seem to compile.

I have no idea what I am doing wrong. Please help. I would also appreciate a paid consultant to assist me if possible, possibly located in Bangalore India. Please email me at dsanjit@yahoo.com.

This is rather urgent.



Is it possible to define query globally

by: trupti | Views: 67 | Forum: India | Last post by McLion, September 17, 2014

Hello I am new in Qt Development.
Can anyone plz suggest how to define a query globally??
Also is it possible to use query in header file??

[andreyc EDIT]: to avoid duplication of the answers I closed this thread.
Use this tread http://qt-project.org/forums/viewthread/47502/


Extract text from images?

by: achiever | Views: 133 | Forum: India | Last post by JKSH, September 9, 2014

Hello all, I just want to know how to extract text from image(.jpg). Can anyone suggest me?



Welcome to Qt India Group and Forum

by: Deleted Member # 4a2 | Views: 7806 | Forum: India | Last post by Rathnadhar, August 20, 2014

The basic rules of the Devnet forum also apply to this group/forum.

See http://developer.qt.nokia.com/wiki/ForumHelp [developer.qt.nokia.com]

Small note: There are infinite possibilities that mobile apps can achieve to the Indian people and the environment here. The field is totally untapped. Nokia is the leading mobile device player here and Qt is the best possible cross platform development framework probably available.

This group has just been created and look forward to more activities here.

  • Learning Qt
  • Troubleshooting
  • Wiki articles
  • Brainstorm your ideas

Open for your ideas …


qt giving the ld error

by: Nilesh Prakash Kokane | Views: 189 | Forum: India | Last post by Nilesh Prakash Kokane, August 9, 2014

Hi ,

Based on the url http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard

bitbake core-image-minimal and bitbake meta-toolchain-qt5

Both gave me success.

But after setting the qt creator and running the example clocks code its giving me the ld errors as follows

09:41:15: Running steps for project clocks…

09:41:15: Configuration unchanged, skipping qmake step.

09:41:15: Starting: “/usr/bin/make”

arm-linux-gnueabi-g++ -o clocks main.o qrc_clocks.o -L/opt/poky/1.6.1/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/lib -lQt5Quick -lQt5Qml -lQt5Network -lQt5Gui -lQt5Core -lGLESv2 -lpthread

/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/bin/ld: cannot find /lib/libpthread.so.0 inside

/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/bin/ld: cannot find /usr/lib/libpthread_nonshared.a inside

collect2: error: ld returned 1 exit status

make: *** [clocks] Error 1

09:41:15: The process “/usr/bin/make” exited with code 2.

Error while building/deploying project clocks (kit: wandboard)

When executing step ‘Make’

09:41:15: Elapsed time: 00:00.

I’ve assuared that the set up in the Configure Qt creators OK , but its still giving the error.

can you suggest me for that.


Qprinter receipt issue

by: saravanavelu39 | Views: 128 | Forum: India

Hi all,
This is my code

  1. QESCPOS printer("/dev/ttyUSB0");
  3.     printer.open(QIODevice::ReadWrite);
  4.     printer.autoConfig();
  6.     /*printer.setBaudRate(BAUD19200);
  7.     printer.setFlowControl(FLOW_HARDWARE);
  8.     printer.setParity(PAR_NONE);
  9.     printer.setCharacterCodeTable(QESCPOS::CCT_PC850);
  10.     printer.setInternationalCharacterSet(QESCPOS::ICS_CHINESE);
  14.     printer.initialize();*/
  15. //    printer.cutPaper(true, 0);
  17.     /*QList<QImage> l;
  18.     l.append(QImage("/home/qdot/Downloads/logo.png"));
  19.     printer.defineNVRaster(l);*/
  21.     printer.write("Test: 大虾多士\n");
  22.     printer.cutPaper(true, 0);

in here i need to display (” Test: 大虾多士\n”) in the receipt,,please give me a suggesstion


Want to set up Qt5 for developing application in Wandboard

by: Mayur Gaikwad | Views: 1499 | Forum: India | Last post by Mayur Gaikwad, August 4, 2014

Hi All,

I am working on Wandboard Solo. I am developing my application in Ubuntu for that i want to set up Qt5 for wandboard. I learn how to create new project using Qt Creater, but i am getting stuck at qmake configuration. I am not able to define qmake configuration on wandboard. I want to set up crosscompiler in Qt creater which can compile & gives suitable output file for Wandboard.

I tried to go thru the link “http://wiki.wandboard.org/index.php/Setup_QT_creator_for_developing_QT_apps_on_wandboard”. but i am not understanding the part “Export the qmake variables to QT Creator 3.0” that how the qmake configuration is set for Wandboard & how the path “/build/tmp/work/cortexa9hf-vfp-neon-mx6-poky-linux-gnueabi/qtbase/5.1.1- r0/build/config.summary” will created.

Can someone suggest the steps to set up Qt5 for Wandboard in detail?

Mayur Gaikwad


How to create own dll in qt

by: saravanavelu39 | Views: 123 | Forum: India | Last post by p3c0, August 4, 2014

Hi All,

I need to create the setup file,,,so how to create the own dll in qt,,please send me a some suggestion for createing the dll file,, Thanks

Qt for QNX

by: dinakar510 | Views: 104 | Forum: India


We are facing an issue with Qt for QNX. We have couple of requirements to use Qt on QNX RTOS. If any one please kindly help me on how to go on towards my below requirements.

1) Can I run Qt Application on QNX with Photon Enabled instead of Shell Environment.
2) Can I see debug/print statements which are part of my application on the QNX Terminal when I click any button in my application.

Requesting anyone to help with the above two.

-Thank You.


How to delete widgets from Qvboxlayout

by: saravanavelu39 | Views: 95 | Forum: India

Hi friends,

i am facing the one issue,,how to delete all widget from qvboxlayout in Qt,,After deleteing the widget i need to add some widget in the same Qvboxlayout,,now i delete the widget from Qvboxlayout,,and after that i add the new widget means Qvboxlayout take more spaces between the two widgets,, In below i added the code for deleting the widget from layout
  1.         while ( ( item = rightui->listLayout->takeAt( 0 ) ) != NULL )
  2.         {
  3.             if (item->widget()) {
  4.                 qDebug() << "item widget: " << item->widget();
  5.                 delete item->widget();
  6.             }
  7.             delete item;
  8.         }
Please Give me a good solution for this,,,Thanks

This is an overview of the latest updated topics, visit the full forum here.