Qwt plugins in Qt Creator

[ziXet]

Finally I have succeeded to integrate qwt plugin to Qt creator! (rebuild qt-creator with mingw32)
But now when I want to access the qwt widget's method on my code I get this error:

example.exe exited with code -1073741819

example.exe exited with code -1073741819

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I have built qwt with mingw32 in release mode.

qmake -spec win32-g++ -r CONFIG+=release qwt.pro
mingw32-make release

qmake -spec win32-g++ -r CONFIG+=release qwt.pro
mingw32-make release

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what's wrong?!

[Tottish]

Well, I'm definitely no expert in this field but I have been working myself half to death in getting the qwt plugin to work on windows before, which I assume you are using since you're mentioning msvc.
All the advise I can give you is to follow my guide/steps from post #14 in this thread if you are OK with using Qt Creator and MinGW. All I can say is that is what worked for me when I had tried what felt like a billion approaches.

Keep working, You'll get it to work!
Cheers
/Tottish

[Uwe]

Finally I have succeeded to integrate qwt plugin to Qt creator! (rebuild qt-creator with mingw32)

O.k. you found out that you were trying to mix MSVC and MinGW and decided to continue with MinGW only - fine.

The common problems for using a Qwt DLL on Windows are:

1) You forgot to set "DEFINES += QWT_DLL" in your application qmake project file ( if you are not using qmake, set the define however this needs to be done in your IDE )

2) You didn't set the PATH variable, so that the DLL is not found

3) Qwt was build in release mode and your application in debug mode ( or v.v. )

Uwe

[ziXet]

Edit!
My fault!

Thank you UWE for this great library!

[pklemm]

I used Qwt with Qt 4.8.4 and everything worked fine, now have moved to Qt 5 and the Designer plugin is no longer recognized. I followed the Qt examples for Qt5 Designer plugins, however the pluging is not shown and when I go to Tools->Form Editor->About Qt Designer Plugins... I get a message under "Failed Plugins" stating that "Cannot load library C:/Qwt-6.1.0-svn/plugins/designer/qwt_designer.dll: The specified procedure could not be found." Might as well have just said "Error" for all the information it provides.

Anyone been able to get Designer plugins working with Qt5? I have revision 1698 of svn://svn.code.sf.net/p/qwt/code/trunk/qwt