WM_SETICON

An application sends the WM_SETICON message to associate a new large or small icon with a window. The system displays the large icon in the ALT+TAB dialog, and the small icon in the window caption.

WM_SETICON 
wParam = (WPARAM) fType;          // icon type
lParam = (LPARAM) (HICON) hicon;  // handle to icon
 

Parameters

fType

Value of wParam. Specifies the type of icon being set. This parameter can be one of the following values:

Value	Meaning
ICON_BIG	Set the large icon for the window.
ICON_SMALL	Set the small icon for the window.

hicon

Value of lParam. Handle to the new large or small icon. If this parameter is NULL, the icon indicated by fType is removed.

Return Values

The return value is a handle to the previous large or small icon, depending on the value of fType. It is NULL if the window previously had no icon of the type indicated by fType.

Default Action

The DefWindowProc function returns a handle to the previous large or small icon associated with the window, depending on the value of fType.

QuickInfo

  Windows NT: Requires version 4.0 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Windows Overview, Window Messages, DefWindowProc, WM_GETICON