Qwt + mingw64

**baray98** · 1st February 2011, 17:54

I downloaded qwt6.0.0-rc5 and compiled it with my environment and tried running all examples and it just fails at startup. This means i have compiled the lib and the examples in debug and release version but still no luck running them.

I guess you need to know my environment? here it is

Qt = 4.7.1 (commercial) - 64 bit lib
Mingw64 = (TDM-GCC)GCC 4.5 Series
OS = Windows7

I have disable/commented out QwtMathML to compile the examples ( but i think this my environment issue)

Here's my questions:

1) Is there any special patch/config for qwt and mingw64 to work properly? all i did was edit qwtconfig.pri to my needs ,qmake (64 bit made qmake) and mingw32-make (comes from mingw64).

2) I have built my app during the qwt 5.2.0 days. Now i noticed that my apps are complaining about qwt_data.h is not available anymore. I was wondering whats the story about the deprecation of QwtData and what is its replacement?

I think these questions are for UWE but i'll appreciate any answer from anybody.

baray98

**Uwe** · 2nd February 2011, 07:19

I have disable/commented out QwtMathML to compile the examples ( but i think this my environment issue)

It makes sense to do this if you are not interested in the MathML stuff - but it is not necessary. If you had to do this to build the examples successfully you might have a serious problem on your side, that should be fixed before you continue.

1) Is there any special patch/config for qwt and mingw64 to work properly? all i did was edit qwtconfig.pri to my needs ,qmake (64 bit made qmake) and mingw32-make (comes from mingw64).

I'm not aware of any reason, why Qwt code should depend on 32/64 bit and I heard about successful 64 bit builds with MSVC. But I never tried mingw64 myself.

2) I have built my app during the qwt 5.2.0 days. Now i noticed that my apps are complaining about qwt_data.h is not available anymore. I was wondering whats the story about the deprecation of QwtData and what is its replacement?

Check the examples and the documentation.

Uwe

**baray98** · 3rd February 2011, 18:48

QwtSeriesData is my answer i believe, but what did you gain / what was the push by switching to this class if you don't mind me asking ?

**Uwe** · 4th February 2011, 06:43

Originally Posted by baray98

QwtSeriesData is my answer i believe, but what did you gain / what was the push by switching to this class if you don't mind me asking ?

QwtSeriesData/QwtSeriesItem are templates with code, that is common for all types of representations for a series of samples. In Qwt 5 QwtData/QwtPlotCurve was for x/y samples only.

The win is that any author of a new plot item ( f.e Qwt itsself ) can share this code instead of having to copy it again and again. Check QwtPlotIntervalCurve or QwtPlotHistogram, or ...

Uwe