add isFixedSize implementation

Yuhang Zhao

2023-12-05 d02f3b0bc32f711bf33a7fd288185963e9e96189

 src/CMakeLists.txt

@@ -69,6 +69,7 @@

    # Add include directories
    target_include_directories(${_target} PRIVATE ${QWINDOWKIT_BUILD_INCLUDE_DIR})
    target_include_directories(${_target} PRIVATE .)

    # Library name
    if(${_target} MATCHES "^QWK(.+)")