Is this considered as a static linking

karim24

in the .pro file
@
LIBS+="d:/qwt-6.1.0-rc2/lib/qwt.dll"
LIBS+="d:/qwt-6.1.0-rc2/lib/qwtd.dll"
INCLUDEPATH+="d:/qwt-6.1.0-rc2/include/"@

in the .cpp and .h files i included the
@#include <qwt_plot.h>
#include <qwt_plot_curve.h>@

in the debug and release files i included:
qwtd.dll
qwt.dll

and if it is a static linkung how do i make it dynamic

raven-worx

DLL = Dynamic Link Library
so no its not meant to link statically

karim24

thanks a lot,
now i get it
so if i included .a instead of .DLL it becomes a static, right?

raven-worx

no, actually you have to include the .a file in both cases instead of the DLL. The .a file contains the necessary info for the compiler if it's built for static or dynamic linkage.
But you already also had a DLL file so you have a lib linked dynamically.

Also note that the file extension is depending on the compiler and the platform you are building with. I assumed you are using the mingw compiler on windows.