Fixes to CMake folder support.

CMakeLists.txt

@@ -35,6 +35,9 @@ if(POLICY CMP0028)
     cmake_policy(SET CMP0028 NEW)
 endif()
 
+# Use folders for nice tree in Visual Studio and XCode
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/modules/")
 
 # Find Corrade first so we can check on the target

src/Magnum/Platform/CMakeLists.txt

@@ -760,6 +760,7 @@ if(NEED_WGLCONTEXT OR WITH_WGLCONTEXT)
     if(BUILD_STATIC_PIC)
         set_target_properties(MagnumWglContextObjects PROPERTIES POSITION_INDEPENDENT_CODE ON)
     endif()
+    set_target_properties(MagnumWglContextObjects PROPERTIES FOLDER "Magnum/Platform")
 
     # Also create proper static library, if requested
     if(WITH_WGLCONTEXT)