Hi,<br><br>I am using InsightToolkit-3.2.0, InsightApplications-3.0.0 and fltk-1.1.7.<br>I&#39;ve created a user interface using fltk and&nbsp; GLSliceView.h<br><br>When I compile it, I get the following error : <br>RadioactivImagesTool error LNK2019: unresolved external symbol &quot;int __cdecl ifuShowText(char const *)&quot; (?ifuShowText@@
YAHPBD@Z) referenced in function &quot;public: virtual int __thiscall itk::SliceView&lt;unsigned short&gt;::handle(int)&quot; (?handle@?$SliceView@G@itk@@UAEHH@Z)<br><br>Any ideas ?<br>Thanks<br>Delphine<br><br>This is the CMakelists : 
<br>#############################################<br># PROJECT: RadioactivImagesTool&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; #<br>#############################################<br>PROJECT(RadioactivImagesTool)<br><br>#####################################
<br># FIND PACKAGES IF BUILDING OUTSIDE #<br>#####################################<br><br>INCLUDE (${CMAKE_ROOT}/Modules/FindITK.cmake)<br>IF(USE_ITK_FILE)<br>&nbsp; INCLUDE(${USE_ITK_FILE})<br>ENDIF(USE_ITK_FILE)<br><br>INCLUDE (${CMAKE_ROOT}/Modules/FindOpenGL.cmake)
<br>INCLUDE (${CMAKE_ROOT}/Modules/FindGLU.cmake)<br><br>FIND_PACKAGE(FLTK)<br>&nbsp; IF(FLTK_FOUND)<br>&nbsp;&nbsp;&nbsp; INCLUDE_DIRECTORIES(${FLTK_INCLUDE_DIR})<br>ENDIF(FLTK_FOUND)<br><br><br>INCLUDE (${RadioactivImagesTool_SOURCE_DIR}/FindInsightApplications.cmake)
<br><br>INCLUDE (${CMAKE_ROOT}/Modules/FindFLTK.cmake)<br>&nbsp; IF(HAS_FLTK)<br><br><br>#############################################<br># SOURCE FILE SPECIFICATION&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; #<br>#############################################
<br><br><br>SET(LOGIC_CXX<br>&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; main.cxx<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; RadioactivImagesToolActionMainWindowGUI.cxx<br>&nbsp;&nbsp;&nbsp; RadioactivImagesToolActionRegistrationToolBoxGUI.cxx<br>&nbsp;&nbsp;&nbsp; RadioactivImagesToolActionMainMenuGUI.cxx<br>&nbsp;&nbsp;&nbsp; ActionBase.cxx
&nbsp;&nbsp;&nbsp; <br>)<br><br># The headers for the Logic code<br>SET(LOGIC_HEADERS&nbsp;&nbsp;&nbsp; <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; RadioactivImagesToolActionGUI.h<br>&nbsp;&nbsp;&nbsp; RadioactivimagesTool_GUI.h<br>&nbsp;&nbsp;&nbsp; ActionBase.h<br>)<br><br># The FL files for Tool<br>SET(MAIN_GUI_SRCS
<br>&nbsp;&nbsp;&nbsp; RadioactivImagesTool_GUI.fld<br>)<br><br>#############################################<br># LIBRARIES AND EXTERNAL CODE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; #<br>#############################################<br><br>&nbsp; # Include directories
<br>&nbsp;&nbsp;&nbsp; INCLUDE_DIRECTORIES (<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${InsightApplications_SOURCE_DIR}/Auxiliary/FltkImageViewer<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FLTK_INCLUDE_PATH}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${OPENGL_INCLUDE_PATH}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FLTK_INCLUDE_DIR}/src<br>&nbsp;&nbsp;&nbsp; )<br><br>&nbsp;&nbsp;&nbsp; LINK_DIRECTORIES(
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${InsightApplications_BINARY_DIR}/Auxiliary/FltkImageViewer<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FLTK_DIR}/bin<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FLTK_DIR}/lib<br>&nbsp;&nbsp;&nbsp; )<br>&nbsp; <br><br>&nbsp;&nbsp;&nbsp; FLTK_WRAP_UI( RadioactivImagesTool ${MAIN_GUI_SRCS} )<br><br>&nbsp;&nbsp;&nbsp; ADD_EXECUTABLE( RadioactivImagesTool&nbsp; ${LOGIC_CXX} ${LOGIC_HEADERS} ${RadioactivImagesTool_FLTK_UI_SRCS})
<br>&nbsp;<br>&nbsp;&nbsp;&nbsp; TARGET_LINK_LIBRARIES( RadioactivImagesTool<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${ITK_LIBRARIES}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${VTK_LIBRARIES}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${OPENGL_LIBRARY}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FltkImageViewer}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ${FLTK_LIBRARY}<br>&nbsp;&nbsp;&nbsp; )<br><br><br>&nbsp; ENDIF(HAS_FLTK)
<br>ENDIF(USE_FLTK)<br><br><br>