Hotfix for Inherited VCL Form HighDPI Regression in 10.2.1. This hotfix addresses a bug introduced in RAD Studio 10.2.1 and reported as RSP-18792 in our Quality Portal. The issue causes an inherited VCL form to fail to scale on high DPI displays.

To install the hotfix, copy the ZIP file in the main root folder of your RAD Studio
installation (like C:\Program files (x86)\Embarcadero\Studio\19.0\ and expand it.
It will replace the following files (of which you might first want to create a backup copy):

lib\win32\debug\Vcl.Forms.dcu
lib\win32\release\Vcl.Forms.dcu
lib\win64\debug\Vcl.Forms.dcu
lib\win64\release\Vcl.Forms.dcu
lib\win32\debug\de\vcl.lib
lib\win32\debug\fr\vcl.lib
lib\win32\debug\ja\vcl.lib
lib\win32\debug\vcl.lib
lib\win32\release\de\vcl.lib
lib\win32\release\fr\vcl.lib
lib\win32\release\ja\vcl.lib
lib\win32\release\vcl.lib
lib\win64\debug\de\vcl.a
lib\win64\debug\fr\vcl.a
lib\win64\debug\ja\vcl.a
lib\win64\debug\vcl.a
lib\win64\release\de\vcl.a
lib\win64\release\fr\vcl.a
lib\win64\release\ja\vcl.a
lib\win64\release\vcl.a
lib\win32\debug\de\vcl.dcp
lib\win32\debug\fr\vcl.dcp
lib\win32\debug\ja\vcl.dcp
lib\win32\debug\vcl.dcp
lib\win32\release\vcl.dcp
lib\win64\debug\de\vcl.dcp
lib\win64\debug\fr\vcl.dcp
lib\win64\debug\ja\vcl.dcp
lib\win64\debug\vcl.dcp
lib\win64\release\vcl.dcp
bin\vcl250.bpl
bin64\vcl250.bpl
source\vcl\Vcl.Forms.pas

Only for V.I.P