Calls the next handler in a window's subclass chain
#include <WinAPIShellEx.au3>
_WinAPI_DefSubclassProc ( $hWnd, $iMsg, $wParam, $lParam )
| $hWnd | Handle to the window being subclassed. |
| $iMsg | The message to be sent. |
| $wParam | The message-specific information. |
| $lParam | The message-specific information. |
The last handler in the subclass chain is the original window procedure for the specified window.
You do not need to call the default window procedure; this function calls it automatically.
Search DefSubclassProc in MSDN Library.
#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