windows-nt/Source/XPSP1/NT/windows/appcompat/shims/specific/hotfaxmessagecenter4.cpp

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
HotFaxMessageCenter4.cpp
Abstract:
The app was AV'ing as it was passing a NULL handle
ontained from GetDlgItem() to another call.
This appspecific SHIM prevents that from happening.
This is an app specific shim.
History:
03/13/2001 prashkud Created
--*/
#include "precomp.h"
IMPLEMENT_SHIM_BEGIN(HotFaxMessageCenter4)
#include "ShimHookMacro.h"
APIHOOK_ENUM_BEGIN
APIHOOK_ENUM_ENTRY(GetDlgItem)
APIHOOK_ENUM_END
/*++
Correct the returned HANDLE if it is NULL by passsing the previous valid
HANDLE
--*/
HWND
APIHOOK(GetDlgItem)(
HWND hDlg,
int nIDDlgItem
)
{
static HWND hDlgItem = 0;
HWND hCurDlgItem = 0;
hCurDlgItem = ORIGINAL_API(GetDlgItem)(hDlg, nIDDlgItem);
if (hCurDlgItem != NULL)
{
hDlgItem = hCurDlgItem;
}
return hDlgItem;
}
/*++
Register hooked functions
--*/
HOOK_BEGIN
APIHOOK_ENTRY(USER32.DLL, GetDlgItem)
HOOK_END
IMPLEMENT_SHIM_END