69 lines
1.1 KiB
C++
69 lines
1.1 KiB
C++
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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WebPage6.cpp
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Abstract:
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The app passes in an uninitialized POINT structure in a call to ScreenToClient API.
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The API call fails, however the apps goes on to use the POINT structure
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resulting in an AV. This shim zeroes in the POINT structure passed to the API
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if the API call fails.
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History:
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02/02/2001 a-leelat Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(WebPage6)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(ScreenToClient)
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APIHOOK_ENUM_END
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BOOL APIHOOK(ScreenToClient)(
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HWND hWnd, // handle to window
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LPPOINT lpPoint // screen coordinates
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)
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{
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BOOL bRet;
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//Call the actual API
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bRet = ORIGINAL_API(ScreenToClient)(hWnd,lpPoint);
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//Zero fill the POINT structure
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if ( (bRet == 0) && lpPoint )
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{
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ZeroMemory(lpPoint,sizeof(POINT));
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}
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return bRet;
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY( USER32.DLL, ScreenToClient)
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HOOK_END
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IMPLEMENT_SHIM_END
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