100 lines
1.7 KiB
C++
100 lines
1.7 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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MastersOfOrion2.cpp
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Abstract:
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This shim is designed to fix a synchronization issue which occurs when
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SendMessage is called on a different thread from the window proc. I've not
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confirmed this, but it looks as if SendMessage will relinquish control to
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the thread with the window proc on Win9x.
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The effect on an application can be varied. In Masters of Orion II, the
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mouse cursor stops moving.
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Notes:
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This is an app specific shim.
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History:
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04/19/2000 linstev Created
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06/06/2001 linstev Added fix for heap problems
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(MastersOfOrion2)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(SendMessageA)
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APIHOOK_ENUM_ENTRY(LocalAlloc)
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APIHOOK_ENUM_END
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/*++
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Make sure we switch threads after the SendMessage.
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--*/
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LRESULT
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APIHOOK(SendMessageA)(
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HWND hWnd,
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UINT Msg,
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WPARAM wParam,
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LPARAM lParam
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)
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{
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LRESULT lRet = ORIGINAL_API(SendMessageA)(
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hWnd,
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Msg,
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wParam,
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lParam);
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SwitchToThread();
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return lRet;
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}
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/*++
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Pad allocations for Ddraw surfaces so they don't trash Ddraw structures.
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--*/
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HLOCAL
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APIHOOK(LocalAlloc)(
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UINT uFlags,
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SIZE_T uBytes
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)
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{
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if (uBytes >= 640*480) {
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//
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// This is probably a screen size surface
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//
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uBytes += 4096;
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}
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return ORIGINAL_API(LocalAlloc)(uFlags, uBytes);
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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, SendMessageA)
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APIHOOK_ENTRY(KERNEL32.DLL, LocalAlloc)
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HOOK_END
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IMPLEMENT_SHIM_END
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