Export ItemSelection and ItemSettingsDialog widget symbols

This is done to be able to support use of these widgets in plugins.

CMakeLists.txt

@@ -254,6 +254,7 @@ target_sources(
           src/utils/curl-helper.hpp
           src/utils/duration-control.cpp
           src/utils/duration-control.hpp
+          src/utils/export-symbol-helper.hpp
           src/utils/item-selection-helpers.cpp
           src/utils/item-selection-helpers.hpp
           src/utils/log-helper.hpp
@@ -375,6 +376,8 @@ target_include_directories(
          "${CMAKE_CURRENT_SOURCE_DIR}/deps/obs-websocket/lib"
          "${CMAKE_CURRENT_SOURCE_DIR}/deps/exprtk")
 
+target_compile_definitions(${LIB_NAME} PRIVATE ADVSS_EXPORT_SYMBOLS=1)
+
 # --- End of section ---
 
 # --- Windows-specific build settings and tasks ---

src/utils/export-symbol-helper.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+// Helpers helper to enable exporting and importing custom Qt widget symbols
+#ifdef ADVSS_EXPORT_SYMBOLS
+#define ADVSS_EXPORT Q_DECL_EXPORT
+#else
+#define ADVSS_EXPORT Q_DECL_IMPORT
+#endif

src/utils/item-selection-helpers.hpp

@@ -1,5 +1,6 @@
 #pragma once
 #include "filter-combo-box.hpp"
+#include "export-symbol-helper.hpp"
 
 #include <QPushButton>
 #include <QDialog>
@@ -11,8 +12,8 @@
 
 namespace advss {
 
-class ItemSelection;
-class ItemSettingsDialog;
+class ADVSS_EXPORT ItemSelection;
+class ADVSS_EXPORT ItemSettingsDialog;
 
 class Item {
 public: