Using C++ Library in QML
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Thanks, that is much better.
Seems you forgot to include this line:
@
INCLUDEPATH += "absolute path of the folder where the files where placed"
@This is probably why you cannot include the file - without include path set, compiler does not "see" the header of qzxing lib.
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Now library is added in project but it is given this error on compile time :
*d:/qt/mingw/bin/../lib/gcc/mingw32/4.4.0/../../../../mingw32/bin/ld.exe: cannot find -lQZXing
collect2: ld returned 1 exit status
mingw32-make.exe[1]: *** [debug\QMLBarcodeScanner.exe] Error 1
mingw32-make.exe: *** [debug] Error 2
14:38:25: The process "D:\QT\mingw\bin\mingw32-make.exe" exited with code 2.
Error while building project QMLBarcodeScanner (target: Qt Simulator)
When executing build step 'Make' * -
Is the library compiled?
Also, the wiki seems to differ between -lQZXing and -lQZXing_selfsigned - maybe you are linking against wrong library?
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I download the library from here: https://github.com/zxing/zxing and i think this is compiled. And this is my .pro file code :
symbian{
LIBS += -lqzxing
customrules.pkg_prerules =
";QZXing"
"@"$$(EPOCROOT)Epoc32/InstallToDevice/QZXing_selfsigned.sis",(0xE618743C)"
" "
DEPLOYMENT += customrules
}win32{
LIBS += -LC:/QtSDKProjects/QMLBarcodeScanner/Qt_4.7.4_Desktop_Mingw
-lQZXing
INCLUDEPATH += "D:\QT\Symbian\SDKs\Symbian3Qt474\epoc32\include"
}and i think u will able to solve it out this time.
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Whoa! In both INCLUDEPATH and LIBS, you point to Qt installation! Those have to point to files in your QZXing installation (headers/ compiled dlls respectively), so that compiler (and qmake) knows where to fine both the qzxing.h and qzxing.so (or .dll, or .a, depending on platform and a few other things). If your project needs both includes, you can include more paths just like in "SOURCES" calls ("" to break the line, then add another entry)
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@ Sierdzio, Thnx for your precious time...i am able to run my project on simulator but not able to run it on my nokia symbian bele (NOKIA 603). It is giving error:
Error while building project QMLBarcodeScanner (target: Symbian Device) When executing build step 'qmake'
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Good to know we made some progress, but I am afraid my help will have stop here - I have no experience in developing on Symbian.
The only thing that comes to my mind is that - maybe - you have to copy the library to the symbian device, too. But that is just a guess, I really don't know anything about Symbian.
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Hi all,
I am able to access QZXing for the simulator . But when it comes for Symbian device it is not accessible
I think there is a problem from the symbian target in my .pro file. Below is the code snip shot of my .pro file for symbian is:_ LIBS += -lqzxing
customrules.pkg_prerules =
";QZXing"
"@"$$(EPOCROOT)Epoc32/InstallToDevice/QZXing_selfsigned.sis",(0xE618743C)"
" "
DEPLOYMENT += customrules_This declaration is same as given here : https://projects.developer.nokia.com/QZXing/wiki
But in my case the the library is not included.
Thnx for any help in advance.
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Your first problem is that your project folder is in a different disk drive compared to the disk drive that the Symbian SDK is installed. Symbian toolchain requires that the projects built must be in the same drive as the Symbian SDK so first fix that.
Moreover the following code is unnecessary when building for Symbian since that path is already included. That is why the project's wiki says to copy the binaries in the epoc32 folder.
@
INCLUDEPATH += “D:\QT\Symbian\SDKs\Symbian3Qt474\epoc32\include”
@One note here is that i am a bit curious on how, as you say, it works for Qt Simulator. I haven't supported it event though it can be done with some modifications.
Finally, if you are getting error when qmake is executed this means that there is a syntax error in your .pro file. If you are still experiencing the same error post the .pro but included in the code tags (place a "@" at the beginning and end of the code ).
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This thread is continued "here":http://qt-project.org/forums/viewthread/17435/.
