WM_DPICHANGED_BEFOREPARENT top-level constant
int
const WM_DPICHANGED_BEFOREPARENT
For Per Monitor v2 top-level windows, this message is sent to all HWNDs in the child HWDN tree of the window that is undergoing a DPI change. | WM_DPICHANGED_BEFOREPARENT message (Winuser.h).
To learn more, see learn.microsoft.com/windows/win32/hidpi/wm-dpichanged-beforeparent.
Implementation
const WM_DPICHANGED_BEFOREPARENT = 738;