Using a Win32 static library

**jacky** · 14th April 2009, 14:26

I am newbie in Qt4 but have 10+ years experience in coding C++.

I have an application that is coded in MFC which uses a 3rd party Win32 static library. I would like to rebuild the application in QT4 but unfortunately I do not have the source code.

I would like to know if it is possible to use a Win32 static library in QT4. If not, let me know. If yes (what I hope for) please provide a simple example or a reference to a site which shows how to do this.

Many thanks in advance for your advice.

**spud** · 14th April 2009, 14:43

To use sample.lib in the directory 3rdParty/lib All you have to do is add the following line to your .pro file:

Qt Code:

Switch view

LIBS += -L./3rdParty/lib -lsample

LIBS += -L./3rdParty/lib -lsample

To copy to clipboard, switch view to plain text mode

You could run into problems if the library links to another version of the MSVC runtime libraries than you are using. The compiler will warn you about that, though .

**jacky** · 15th April 2009, 04:39

Thanks for your advice.

I added a LIBS line as your suggestion in the .pro file however the MINGW compiler says "Undefine reference to '<the lib method>'".

The lib is compiled by MC++ compiler then I think it may cause problems but I don't know if there is any ways to work around.

Many thanks in advance for your advice.