CTK编译QT的GUI插件

CTK创建插件部分见————使用CMake创建一个最简CTK插件

CTK创建QT插件时使用上述方式创建的是非GUI插件，而对于QT的GUI插件插件，创建时需要使用QWidgets和QGui库，这些库通过修改CMake文件配置失败，理论配置方式如下，并且CMake也成功找到了QT目录下的相应.cmake配置文件，但是最终生成项目中却没有配置好相应的库，原因不明：

打开ctkMacroSetupQt.cmake：

###########################################################################
#
#  Library:   CTK
#
#  Copyright (c) Kitware Inc.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0.txt
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
###########################################################################

#! \ingroup CMakeUtilities
macro(ctkMacroSetupQt)
  set(CTK_QT_VERSION "5" CACHE STRING "Expected Qt version")
  mark_as_advanced(CTK_QT_VERSION)

  set_property(CACHE CTK_QT_VERSION PROPERTY STRINGS 5 4)

  if(NOT (CTK_QT_VERSION VERSION_EQUAL "4" OR CTK_QT_VERSION VERSION_EQUAL "5"))
    message(FATAL_ERROR "Expected value for CTK_QT_VERSION is either '4' or '5'")
  endif()


  if(CTK_QT_VERSION VERSION_GREATER "4")
    cmake_minimum_required(VERSION 2.8.12)
    find_package(Qt5 COMPONENTS Core)
    set(CTK_QT5_COMPONENTS Core Xml XmlPatterns Concurrent Sql Test)
    if(CTK_ENABLE_Widgets OR CTK_LIB_Widgets OR CTK_LIB_CommandLineModules/Frontend/QtGui OR CTK_BUILD_ALL OR CTK_BUILD_ALL_LIBRARIES)
      list(APPEND CTK_QT5_COMPONENTS Widgets OpenGL UiTools)
    endif()
    if(CTK_LIB_CommandLineModules/Frontend/QtWebKit OR CTK_BUILD_ALL OR CTK_BUILD_ALL_LIBRARIES)
      if(TARGET Qt5::WebKitWidgets)
        list(APPEND CTK_QT5_COMPONENTS WebKitWidgets)
      else()
        list(APPEND CTK_QT5_COMPONENTS WebEngineWidgets)
      endif()
    endif()
    if(CTK_LIB_XNAT/Core OR CTK_BUILD_ALL OR CTK_BUILD_ALL_LIBRARIES)
      list(APPEND CTK_QT5_COMPONENTS Script)
    endif()
    find_package(Qt5 COMPONENTS ${CTK_QT5_COMPONENTS} REQUIRED)

    mark_as_superbuild(Qt5_DIR) # Qt 5

    # XXX Backward compatible way
    if(DEFINED CMAKE_PREFIX_PATH)
      mark_as_superbuild(CMAKE_PREFIX_PATH) # Qt 5
    endif()

  else()
    set(minimum_required_qt_version "4.6")

    find_package(Qt4)

    if(QT4_FOUND)

      if("${QT_VERSION_MAJOR}.${QT_VERSION_MINOR}" VERSION_LESS "${minimum_required_qt_version}")
        message(FATAL_ERROR "error: CTK requires Qt >= ${minimum_required_qt_version} -- you cannot use Qt ${QT_VERSION_MAJOR}.${QT_VERSION_MINOR}.${QT_VERSION_PATCH}.")
      endif()

      set(QT_USE_QTNETWORK ON)
      set(QT_USE_QTSQL ON)
      set(QT_USE_QTOPENGL ON)
      set(QT_USE_QTXML ON)
      set(QT_USE_QTXMLPATTERNS ON)
      set(QT_USE_QTTEST ${BUILD_TESTING})
      include(${QT_USE_FILE})

      # Set variable QT_INSTALLED_LIBRARY_DIR that will contains
      # Qt shared library
      set(QT_INSTALLED_LIBRARY_DIR ${QT_LIBRARY_DIR})
      if(WIN32)
        get_filename_component(QT_INSTALLED_LIBRARY_DIR ${QT_QMAKE_EXECUTABLE} PATH)
      endif()

      mark_as_superbuild(QT_QMAKE_EXECUTABLE) # Qt 4
    else()
      message(FATAL_ERROR "error: Qt4 was not found on your system. You probably need to set the QT_QMAKE_EXECUTABLE variable")
    endif()
  endif()

  mark_as_superbuild(CTK_QT_VERSION)
endmacro()

在set(CTK_QT5_COMPONENTS Core Xml XmlPatterns Concurrent Sql Test)项添加Gui Widgets项，即：

改：set(CTK_QT5_COMPONENTS Core Xml XmlPatterns Concurrent Sql Test)
为：set(CTK_QT5_COMPONENTS Core Gui Widgets Xml XmlPatterns Concurrent Sql Test)

由于下面有对Widgets项的添加，为了避免重复添加，对其添加注释：

#if(CTK_ENABLE_Widgets OR CTK_LIB_Widgets OR CTK_LIB_CommandLineModules/Frontend/QtGui OR CTK_BUILD_ALL OR CTK_BUILD_ALL_LIBRARIES)
#list(APPEND CTK_QT5_COMPONENTS Widgets OpenGL UiTools)
#endif()

修改完成后执行CMake，可以发现在CMake的GUI界面找到并显示了QT对Core Gui Widgets Xml XmlPatterns Concurrent Sql Test相应的.cmake配置文件，但是最终生产项目并没有将改对应库添加到项目，原因在之后查询。

但是可以在CTK生成成功后（有一项会失败，就是这个GUI插件，但是项目已经构建，只是生成失败），打开该GUI插件工程，手动在插件项目中添加：

include目录：

C:\Qt\Qt5.7.1\5.7\msvc2015\include\QtANGLE
C:\Qt\Qt5.7.1\5.7\msvc2015\include\QtGui
C:\Qt\Qt5.7.1\5.7\msvc2015\include\QtWidgets

链接器附加依赖性：

Debug模式下：

C:\Qt\Qt5.7.1\5.7\msvc2015\lib\Qt5Guid.lib
C:\Qt\Qt5.7.1\5.7\msvc2015\lib\Qt5Widgetsd.lib

Release模式下：

C:\Qt\Qt5.7.1\5.7\msvc2015\lib\Qt5Gui.lib
C:\Qt\Qt5.7.1\5.7\msvc2015\lib\Qt5Widgets.lib

添加后单独编译该插件可以生成Qt带哟gui部分的插件，但是该生成方式只用于GUI使用代码编写，ui文件如何使用尚不明确

CTK编译QT的GUI插件

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