Qwt plugins in Qt Creator

[marinear212]

Hello,

I'm using Windows 7 and would like to use Qwt designer plugin in Qt Creator.

I do see qwt designer plugins in Qt Designer, but I can't figure out how to use the plugins in Qt Creator.

I saw somewhere that I have to compile Qwt with vc++ using nmake so I tried but this gave me some errors.


Does anyone uses Qwt designer plugin in Qt Creator? If so could you please tell me how did u install it?

Thanks in advance!

Jordan

[iuha]

Hi Jordan,

Well, to be honest I did install Qwt plugin on QtCreator, but using MinGW. I'm gonna tell how I did and maybe can help you.

1. Download http://get.qt.nokia.com/misc/MinGW-gcc440_1.zip and extract it to C:\MinGW.
2. Download http://get.qt.nokia.com/qt/source/qt....6.3-mingw.exe and install on your machine using MinGW that you downloaded before.
3. Download http://get.qt.nokia.com/qtcreator/qt...-1.3.1-src.zip and extract it to C:\.
4. Open Qt 4.6.3 Command Prompt as administrator if your using Win7 or Vista, go to C:\ and create a dir as "qt-creator-1.3.1-build",enter the folder and type as follow:
   

   qmake.exe C:\qt-creator-1.3.1-src\qtcreator.pro -spec win32-g++ -r CONFIG+=release

   qmake.exe C:\qt-creator-1.3.1-src\qtcreator.pro -spec win32-g++ -r CONFIG+=release

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   mingw32-make release

   mingw32-make release

   To copy to clipboard, switch view to plain text mode 
5. While you wait for it to finish compiling this new version of QtCreator, you can compile Qwt as well. ( don't forget one detail: you need to compile all as "release". )
6. After all done, just install Qwt plugin in Qt folder ( usually as C:\Qt\4.6.3\plugins\designer ) as well the binaries and libraries needed for it.

If everything goes well, that I hope so, the new build of qtcreator will work with Qwt just fine.

Any questions, just post them here and I'll take a look.

Best Regards,
Carlos

[marinear212]

Thanks for a reply, Carlos.

I tried to follow your way, and I thought I got it working, but I get different errors now.
Maybe I compiled it wrong or something so I want to give it a few more try, but my supervisor really wants me to ask on the forum about this.
So here it goes.

I installed Qt and Qt Creator, and compiled qwt too. But I still can't find qwt designer plugins and when I check the list of the plugins, I see qwt designer plugins under Failed Plugins.
It says it "Cannot load library C:/Qt/4.6.3/plugins/designer/qwt_designer_plugin5.dll: The specified module could not be found."
Also, when I try to run the qwt examples, it builds okay but I get "C:\qwt-5.2.1\examples\bin\simple.exe exited with code -1073741515" this and it just exits.
So I'm assuming I did something wrong when I installed qwt..

I'm going to keep working on this but I also want to hear from you too.
Thank you very much!

[marinear212]

I got it working! Finaly!

I forgot to compile qwt as release. I recompiled it, and all works fine!

Thank you!

[itsmekrazzy4]

hii,
I am also getting the same message "qt exited with code -1073741515". I don't know how to compile qwt as release. Can you please help me out. In the Set build configuration, it is not giving the option of release.

Thanks!!
Ashish

[iuha]

Hi Ashish,

To build qwt as release, all you have to do is enter the folder where you extract qwt sources and type:

qmake.exe qwt.pro -spec win32-g++ -r CONFIG+=release

qmake.exe qwt.pro -spec win32-g++ -r CONFIG+=release

To copy to clipboard, switch view to plain text mode 

mingw32-make release

mingw32-make release

To copy to clipboard, switch view to plain text mode 

and wait.

after that copy the libs and dlls again to the qt folders and thats it.

[itsmekrazzy4]

Hey thnx, the thing works well now!!

[Tottish]

OK, So I've been scratching my head over this for a while now (roughly a week 8-10hour/day). Basically I have tried every guide I have found and read every thread that I've come across on the subject but still no Qwt plugin in Qt Designer/Creator.

If we focus on the method described above:
I follow the first post by juha exactly with the exception that I use the Qt 4.7.0 instead of 4.6.3 and that I use the source for QtCreator 2.0.1 instead of 1.3.1.
I do the qmake/mingw make exactly as he describes and then I do the same for qwt as juha describes in his second post.
Everything goes well and I get no errors or anything like that.

I copy the two files in C:\Qt\qwt-5.2.1\designer\plugins\designer (one *.dll and one *.a) to the folder C:\Qt\4.7.0\plugins\designer.
I copy the two files in C:\Qt\qwt-5.2.1\lib (one *.dll and one *.a) to the folder C:\Qt\4.7.0\lib.

But still. When I run designer from the start-menu I don't get the qwt-widgets available from the "toolbox" and under Help->About Plugins, sure enough, qwt is listed in the bottom as a failed plugin:
"Cannot load library C:/Qt/4.7.0//plugins/designer/qwt_designer_plugin5.dll: 'Can't find the module' " Where 'Can't find the designated module' is a rough translation from Swedish.
There are also two other failed plugins listed here:
containerextensiond.dll and taskmenuextensiond.dll with the reason "uses incompatible Qt library......" if that could be of any help.

This is actually not a real problem since I don't normally use the standalone Qt Designer. I prefer Qt Creator with its built in designer.
However, when I try to run my freshly release-compiled qtcreator.exe (in C:\qt-creator-2.0.1-build\bin) I get an error saying that the program cannot be started since the file mingwm10.dll is missing on my computer, I also tried launching the .exe from Qt command prompt in hope that it would consider looking in the MinGW-folder but no difference. The .dll-file in question can be located in the C:/MinGW/bin-folder so I copied it and pasted it into the qtcreator.exe-folder and then it complains about some other dll so I do this with a couple of dlls from MinGW and then finally it says that there is an error in QtCore4.dll.
'Can't find the procedure-start-address _Z17qt_message_output9QtMsgTypePKc in the DLL-file QtCore4.dll.'

So what to do here?
As you may understand I'm starting to get really frustrated over this and any help that might be given would be very much appreciated.

Thank You!
/Tottish

[Tottish]

OK, so now I have tried it all over again but with the exact files (versions) that juha is linking to in his first post. The result have the exact same behavior as in my post above so I guess this is not a version-issue.

I realize that this is not an actual problem with the building of qwt (since I don't get Creator up and running with or without qwt) but since everything else has failed I need help getting Creator to run this way so that I might see if I can use the qwt widgets there.

Thank you.
/Tottish

[iuha]

Hi Tottish,

Have you tried that with qwt 6.0?
I had the same problems with qt 4.7.0, qtcreator 2.0.1 and qith qwt 5.2.1. However, when i tried the qwt 6.0 from svn in qwt website, the problem was solved.
I honestly don't know exactly the issue there, but i think it can be a possible incompatibility.
Try that and see if it works.

Best Regards,

iuha

[Tottish]

Hello juha!

Well no, I haven't. However as my last post indicate I did try with the exact same files you used with the exact same errors as I got when using 4.7.0 and 2.0.1. Since I can't launch the qtcreator.exe we need to solve that problem first and then maybe (if I'm lucky) the qwt plugin will work in the Creators built in designer.
Any ideas on why my Creator won't launch? I feel as if it's only then I can know for sure that I messed something up with the qwt build since only creator is made explicitly in release mode. I'm guessing that qt-win-opensource-4.6.3-mingw.exe also builds in release mode but I don't know that sort of stuff. =)
How can I get it to find the dll's it needs? I tried to copy them into the folder but there must be a better way?

Thank you for your response!
/Tottish

EDIT:
Oh!... and I'm on win7 home premium 64-bit if that might have to do with it.