NAME¶

SetWindowSubclass (COMCTL32.410)

SYNOPSIS¶

BOOL SetWindowSubclass
(
HWND hWnd,
SUBCLASSPROC pfnSubclass,
UINT_PTR uIDSubclass,
DWORD_PTR dwRef
)

DESCRIPTION¶

Starts a window subclass.

PARAMS¶

hWnd [In] handle to window subclass. pfnSubclass [In] Pointer to new window procedure. uIDSubclass [In] Unique identifier of subclass together with pfnSubclass. dwRef [In] Reference data to pass to window procedure.

RETURNS¶

Success: non-zero Failure: zero.

BUGS¶

If an application manually subclasses a window after subclassing it with this Api and then with this Api again, then none of the previous subclasses get called or the original window procedure.

IMPLEMENTATION¶

Declared in "commctrl.h". Implemented in "dlls/comctl32/commctrl.c". Debug channel "commctrl".