Modular library and its paths

[AndrzejB]

Library libqxt with my small changes is here: https://github.com/borneq/libqxt

is compilable from batch, but examples still not compilable.
I have added to examples pro "QT += core gui" but is is not enough:
in displaysettingsdialog.h file is #include <QxtScreen>
QxtScreen is in directory libqxt\include\QxtWidgets
but is invisible
https://github.com/borneq/libqxt/blob/dc5798cfecbc454c6486969ed778cebf3d2bb5a4/examples/displaysettings/displaysettingsdialog.h#L4

What are rules to add module directories

[sierdzio]

You need QT += core gui widgets to get QtWidgets module.

And to use <SomeHeader> you need to point qmake to it's parent directory using INCLUDEPATH.

[AndrzejB]

Problems:
I add full paths and even add qxtletterboxwidget.cpp with path to my project, but is error:

:-1: error: No rule to make target 'QxtLetterBoxWidget', needed by 'ui_displaysettingsdialog.h'.  Stop.

My pro is:

QT  += core gui widgets
TEMPLATE = app
TARGET = displaysettings
DEPENDPATH += .
INCLUDEPATH += .
INCLUDEPATH += d:/wazne/github_my/libqxt/include
INCLUDEPATH += d:/wazne/github_my/libqxt/src/widgets
INCLUDEPATH += d:/wazne/github_my/libqxt/src/core
CONFIG += qxt
QXT += core gui widgets

# Input
FORMS += displaysettingsdialog.ui
HEADERS += displaysettingsdialog.h
SOURCES += displaysettingsdialog.cpp main.cpp
SOURCES += d:/wazne/github_my/libqxt/src/widgets/qxtletterboxwidget.cpp

[sierdzio]

That's wrong. Qxt is a library, you should have a precompiled dll or lib package. Then use INCLUDEPATH to point Qt to the includes, and LIBS to point it to the libraries.

What you did here is a manual compilation of qxtletterboxwidget.cpp which won't work.

[AndrzejB]

Problem is probably with ui, I not used it previous.
I have

LIBS += d:/wazne/github_my/libqxt/lib -lQxtCore -lQxtWidgets

but still the same error.

[sierdzio]

@AndrzejB said in Modular library and its paths:

SOURCES += d:/wazne/github_my/libqxt/src/widgets/qxtletterboxwidget.cpp

Remove that line from .pro file.

[AndrzejB]

Removed, instead this is LIBS.

[sierdzio]

Should work, then. Make a full rebuild.

• Is there anything special in "ui_displaysettingsdialog.h"?
• Have you checked if file "QxtScreen" is there in on of the INCLUDEPATHs you added?