WIP: prepare border painter

Yuhang Zhao

2023-12-11 5c471560256776f17f1e3d5c377c7d3e9fdcc0f1

 src/widgets/widgetwindowagent.cpp

@@ -22,7 +22,7 @@
                    QPainter painter(widget);
                    QRect rect = e->rect();
                    QRegion region = e->region();
                    void *a[3] = {
                    void *a[] = {
                        &painter,
                        &rect,
                        &region,