update demo code

Zhao Yuhang

2024-09-15 f645ae48cda10b80ffe9d83ba9487671c7f535c0

 examples/mainwindow/CMakeLists.txt

@@ -3,12 +3,7 @@
file(GLOB _src *.h *.cpp)

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

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