Funktionreferenz


_WinAPI_SetWindowSubclass


Installs or updates a window subclass callback

#include <WinAPIShellEx.au3>
_WinAPI_SetWindowSubclass ( $hWnd, $pSubclassProc, $idSubClass [, $pData = 0] )

Parameter

$hWnd Handle of the window being subclassed.
$pSubclassProc A pointer to a window procedure. This pointer and the subclass ID uniquely identify this subclass callback.
(See MSDN for more information)
$idSubClass The subclass ID.
$pData [optional] The reference data. This value is passed to the subclass procedure. The meaning of this value is determined by the calling application.

Rückgabewert

Success: True.
Failure: False.

Bemerkungen

Subclass callbacks are identified by the combination of the callback address and the caller-defined subclass ID.
If the callback address and ID pair have not yet been installed, then this function installs the subclass,
otherwise, this function just updates the reference data.

Siehe auch

Suche nach SetWindowSubclass in der MSDN Bibliothek.

Beispiel

#include <Extras\WMDebug.au3>
#include <GUIConstantsEx.au3>
#include <WinAPIShellEx.au3>

OnAutoItExitRegister('OnAutoItExit')

; Create GUI
Global $g_hForm = GUICreate('Test ' & StringReplace(@ScriptName, '.au3', '()'))

; Register DLL callback that will be used as window subclass procedure
Global $g_hDll = DllCallbackRegister('_SubclassProc', 'lresult', 'hwnd;uint;wparam;lparam;uint_ptr;dword_ptr')
Global $g_pDll = DllCallbackGetPtr($g_hDll)

; Install window subclass callback
_WinAPI_SetWindowSubclass($g_hForm, $g_pDll, 1000, 0)

GUISetState(@SW_SHOW)

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Func _SubclassProc($hWnd, $iMsg, $wParam, $lParam, $iID, $pData)
    #forceref $iID, $pData
    ; Declared in WMDebug.au3
    _WM_Debug($hWnd, $iMsg, $wParam, $lParam)
    Return _WinAPI_DefSubclassProc($hWnd, $iMsg, $wParam, $lParam)
EndFunc   ;==>_SubclassProc

Func OnAutoItExit()
    _WinAPI_RemoveWindowSubclass($g_hForm, $g_pDll, 1000)
    DllCallbackFree($g_hDll)
EndFunc   ;==>OnAutoItExit