Setting width of scrollbars in an MFC program

Question

My English is not perfect, sorry.

I am using Visual C++ 2019 16.9.2 Community, MFC, 64 bit Windows 10 Home 2004.
The scrollbars are too broad, so I want to narrow them.
But among settings of Windows, I did not find how can I narrow them.
Can I set this in Windows, for all the programs?
If yes, where?
If do not, (and naturally, also if yes), how can I set in my MFC program? Naturally, this applies to only my program, and I must set the width at the begin of the program: all times when my program runs.
Thank you.

Answer 1

Hello,
this is not possible in MFC. The width of the window scrollbar is a Windows setting.
As far as I know you can set a Windows Theme which can change the width. But this is a user defined Windows setting.
Nevertheless, maybe you can try to set the width in the Windows registry - although I would never change the global Windows registry settings. Have a look at this: 24c1df8e-8c76-4653-8421-d5274608d6dc
Regards, Guido

By the way: only use the tag c++ for VC++ and MFC, windows-forms is not VC++ MFC.

Answer 2

Globally, with SPI_SETNONCLIENTMETRICS (NONCLIENTMETRICSW structure)
Inside an app, Google gives : ResizeScrollbar - How to change width of built-in scroll bars
(not tested)

Answer 3

Enabling Flat scroll bars might work. The width is customizable via FlatSB_SetScrollProp