add missing win32 constant for old win sdk

Zhao Yuhang

2025-03-11 c00e986f38dbc4843d92cc76a385f826658c1e03

 examples/mainwindow/CMakeLists.txt

@@ -3,12 +3,8 @@
file(GLOB _src *.h *.cpp)

qwk_add_example(${PROJECT_NAME}
    FEATURES cxx_std_17
    SOURCES ${_src} mainwindow.qrc ../shared/resources/shared.qrc
    QT_LINKS Core Gui Widgets
    QT_LINKS Core Gui Widgets # MultimediaWidgets
    LINKS QWKWidgets WidgetFrame
)

set_target_properties(${PROJECT_NAME} PROPERTIES
    CXX_STANDARD 17
    CXX_STANDARD_REQUIRED TRUE
)
)