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65 lines
1014 B
65 lines
1014 B
/*++
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Copyright (c) 2002 Microsoft Corporation
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Module Name:
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DrEye.cpp
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Abstract:
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The App calls GetFocus Which returned NULL. This value was passed onto CWnd::FromHandle.
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CWnd::FromHandle returned NULL. App checked for this return value & threw AV.
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The fix is to return a valid handle when GetFocus is called.
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Notes:
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This is an app specific shim.
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History:
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01/07/2002 mamathas Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(DrEye)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(GetFocus)
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APIHOOK_ENUM_END
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/*++
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Hook GetFocus and try to return a valid handle.
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--*/
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HWND
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APIHOOK(GetFocus)()
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{
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HWND hWnd = ORIGINAL_API(GetFocus)();
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if (hWnd) {
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return hWnd;
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}
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else {
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return GetDesktopWindow();
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}
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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, GetFocus)
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HOOK_END
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IMPLEMENT_SHIM_END
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