How I attach external library:

- Create new QTWidgets
- press right button of mouse on name of project
- chose Add library
- chose external library
- chose file with library (ftd2xx.lib)
- to *.pro is attached the following block
Qt Code: 
  1. win32:CONFIG(release, debug|release): LIBS += -L$$PWD/C:/Documents and Settings/IE25USER/Pulpit/CDM v2.12.06 WHQL Certified/Static/i386/ -lftd2xx
  2. else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/C:/Documents and Settings/IE25USER/Pulpit/CDM v2.12.06 WHQL Certified/Static/i386/ -lftd2xxd
  3.  
  4. INCLUDEPATH += $$PWD/C:/Documents and Settings/IE25USER/Pulpit/CDM v2.12.06 WHQL Certified/Static/i386
  5. DEPENDPATH += $$PWD/C:/Documents and Settings/IE25USER/Pulpit/CDM v2.12.06 WHQL Certified/Static/i386
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after compiling I have the errors:

- error: and: No such file or directory
- error: Settings/IE25USER/Pulpit/CDM: No such file or directory
- error: v2.12.06: No such file or directory
- error: WHQL: No such file or directory
- error: Certified/Static/i386/: No such file or directory

I do not know why I have the erros.

Regards
Artur