Function Reference

DllCallbackGetPtr

Returns the pointer to a callback function that can be passed to the Win32 API.

DllCallbackGetPtr ( handle )

Parameters

handle A DllCallback handle returned from DllCallbackRegister().

Return Value

Success: the pointer to the callback function.

Failure: 0.

Remarks

Use DllCallbackGetPtr() to pass the address of a callback function to the Win32 API when using DllCall().

Related

DllCall, DllCallbackFree, DllCallbackRegister

Example

#include <MsgBoxConstants.au3>
; Create callback function.
Local $hHandle= DllCallbackRegister ("_EnumWindowsProc","int","hwnd;lparam")
; Call EnumWindows.
DllCall ("user32.dll","int","EnumWindows","ptr",DllCallbackGetPtr ($hHandle),"lparam",10)
; Delete callback function.
DllCallbackFree ($hHandle)
; Callback Procedure
Func  _EnumWindowsProc($hWnd,$lParam)
; If the Title is empty or if the window is not visible then continue enumeration.
If WinGetTitle ($hWnd)= ""Or BitAND (WinGetState ($hWnd),2)= 0Then Return 1
Local $iRes= MsgBox (($MB_OKCANCEL+ $MB_SYSTEMMODAL),_
WinGetTitle ($hWnd),"$hWnd="&$hWnd&@CRLF &_
"$lParam="&$lParam&@CRLF &_
"$hWnd(type)="&VarGetType ($hWnd))
If $iRes<> $IDOKThen Return 0; Cancel/Close button clicked, return 0 to stop enumeration.
Return 1; Return 1 to continue enumeration.
EndFunc ;==>_EnumWindowsProc