On Dec 5, 2011, at 8:29 AM, David Doria wrote:
> On Sun, Dec 4, 2011 at 11:34 AM, Michael Jackson
> <mike.jack...@bluequartz.net> wrote:
>> Do you have "MyWidget" packaged as a true library, or did you just create
>> the Designer Plugin and then have a "loose" .cpp/.h file?
>>
>> The is a project called Qwt* that has a similar setup. It has a Designer
>> plugin for its various widgets and it has a qwt.dylib/.dll/.so that your
>> program links against. You might be able to use this type of workflow for
>> your project. In rough form this is what I am suggesting:
>>
>> Create a MyWidget project that builds the Designer plugin and a dynamic
>> library. When the project "installs" it will install its headers and library
>> under its own install location and also install the Designer plugin into the
>> appropriate location inside the Qt distribution you are using. The MyWidget
>> would also include the necessary CMake EXPORT files or what ever so other
>> projects can use it.
>>
>> In the project that actually _uses_ MyWidget, you call
>> "find_package(MyWidget)" which will setup all the necessary include
>> directories and "MyWidget_LIBRARIES" variables.
>>
>> *Normal Qwt at Sourceforge does NOT use CMake as a build system. I have
>> created a CMake build system for Qwt which is located on my public git-web
>> server.
>>
>> Hope some of that helps.
>
> Thanks Mike,
>
> I tried simply placing the Widget in a subdirectory called Widget. I
> got it to work, but I am confused about one thing. If in the main
> project CMakeLists.txt I add:
> add_subdirectory(Widget)
>
> and then in Widget/CMakeLists.txt I add:
>
> include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
>
> I get errors that LabeledSlider.h can't find ui_LabeledSlider.h, and
> main.cpp can't find LabeledSlider.h (problems with uic). However, if
> instead I add directly to the main project CMakeLists.txt:
>
> include_directories(${CMAKE_CURRENT_BINARY_DIR}/Widget)
> include_directories(${CMAKE_CURRENT_SOURCE_DIR}/Widget)
>
> it works fine. Can you explain the difference between these two
> methods of adding the include directories? I have setup both cases
> here: http://daviddoria.com/Uploads/QtSubdirectory.tar.gz
>
> Thanks,
>
> David
Basically you have to figure out where "ui_LabeledSlider.h" is being generated
and make sure that directory is being added via "include_directories". Once you
work through that the other errors may go away.
----
Mike Jackson
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