Qt Designer examples: Add explanation of CMake project files

Task-number: QTBUG-110447
Change-Id: I36769acc50921c2e6af33288b8e291b56328ddc7
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
(cherry picked from commit 64fab45f2696a4a54aa07136d6100b47454c488d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

2 files changed, 19 insertions, 7 deletions

diff --git a/examples/designer/customwidgetplugin/CMakeLists.txt b/examples/designer/customwidgetplugin/CMakeLists.txt
index 6174d4d66..91365b2fb 100644
--- a/examples/designer/customwidgetplugin/CMakeLists.txt
+++ b/examples/designer/customwidgetplugin/CMakeLists.txt
@@ -3,28 +3,37 @@ project(customwidgetplugin LANGUAGES CXX)
 
 set(CMAKE_AUTOMOC ON)
 
+#! [0]
 find_package(Qt6 REQUIRED COMPONENTS Core Gui UiPlugin Widgets)
 
 qt_add_plugin(customwidgetplugin)
+#! [0]
+
+#! [1]
 target_sources(customwidgetplugin PRIVATE
     analogclock.cpp analogclock.h
     customwidgetplugin.cpp customwidgetplugin.h
 )
+#! [1]
 
 set_target_properties(customwidgetplugin PROPERTIES
     WIN32_EXECUTABLE TRUE
     MACOSX_BUNDLE TRUE
 )
 
+#! [2]
 target_link_libraries(customwidgetplugin PUBLIC
     Qt::Core
     Qt::Gui
     Qt::UiPlugin
     Qt::Widgets
 )
+#! [2]
 
 if(QT6_INSTALL_PREFIX)
+#! [3]
    set(INSTALL_EXAMPLEDIR "${QT6_INSTALL_PREFIX}/${QT6_INSTALL_PLUGINS}/designer")
+#! [3]
 else()
    if(NOT DEFINED INSTALL_EXAMPLESDIR)
        set(INSTALL_EXAMPLESDIR "examples")
@@ -32,8 +41,10 @@ else()
    set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/plugins/designer")
 endif()
 
+#! [4]
 install(TARGETS customwidgetplugin
     RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
     BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
     LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
 )
+#! [4]
diff --git a/examples/designer/customwidgetplugin/customwidgetplugin.pro b/examples/designer/customwidgetplugin/customwidgetplugin.pro
index 1447acdc4..92abd7529 100644
--- a/examples/designer/customwidgetplugin/customwidgetplugin.pro
+++ b/examples/designer/customwidgetplugin/customwidgetplugin.pro
@@ -1,6 +1,6 @@
-#! [0]
+#! [1]
 QT          += widgets uiplugin
-#! [0]
+#! [1]
 
 QTDIR_build {
 # This is only for the Qt build. Do not use externally. We mean it.
@@ -11,22 +11,23 @@ CONFIG += install_ok
 } else {
 # Public example:
 
-#! [2]
+#! [0]
 CONFIG      += plugin
 TEMPLATE    = lib
-#! [2]
+#! [0]
 
+#! [3]
 TARGET = $$qtLibraryTarget($$TARGET)
 
 target.path = $$[QT_INSTALL_PLUGINS]/designer
 INSTALLS += target
-
+#! [3]
 }
 
-#! [3]
+#! [2]
 HEADERS     = analogclock.h \
               customwidgetplugin.h
 SOURCES     = analogclock.cpp \
               customwidgetplugin.cpp
 OTHER_FILES += analogclock.json
-#! [3]
+#! [2]