BCGControlBar Pro for MFC

Enum which describes window corner type (Windows 11 or later).

Enumerator
BCGP_DWMWCP_DEFAULT 

Let the system and visual manager decide whether or not to round window corners.

BCGP_DWMWCP_DONOTROUND 

Never round window corners.

BCGP_DWMWCP_ROUND 

Round the corners if appropriate.

BCGP_DWMWCP_ROUNDSMALL 

Round the corners if appropriate, with a small radius.