一.感谢作者，QWindowkit 源码地址:
GitHub - stdware/qwindowkit: Cross-platform frameless window framework for Qt. Support Windows, macOS, Linux.
二.集成pro工程：
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
)