The CBTACTIVATESTRUCT structure contains information passed to a WH_CBT hook procedure, CBTProc, before a window is activated.
typedef struct tagCBTACTIVATESTRUCT { // cas
BOOL fMouse;
HWND hWndActive;
} CBTACTIVATESTRUCT;
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winuser.h.
Hooks Overview, Hook Structures, CBTProc, SetWindowsHookEx