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76 lines
1.5 KiB
C++
76 lines
1.5 KiB
C++
/*
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Copyright 2018 Peter Repukat - FlatspotSoftware
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#pragma once
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#include <Windows.h>
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class SteamTarget;
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namespace overlay_hook
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{
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DWORD JMPBackOpen;
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DWORD JMPBackClosed;
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TargetOverlay* target_overlay;
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__declspec(naked) void overlay_opend_hookFN()
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{
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//excute overrriden instructions
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__asm {
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push esi
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mov byte ptr ds : [esi + 0x28], 1
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}
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//our hook code...
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target_overlay->onOverlayOpened();
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//std::cout << "Opened!\n";
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//jump back
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__asm
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{
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jmp[JMPBackOpen] //jump back and continiue with original steam function
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}
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}
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__declspec(naked) void overlay_closed_hookFN()
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{
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//excute overrriden instructions
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__asm {
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mov dword ptr ds : [esi + 0x24], 0
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mov byte ptr ds : [esi + 0x28], 0
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}
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//our hook code...
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target_overlay->onOverlayClosed();
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//std::cout << "Closed!\n";
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//jump back
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__asm
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{
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jmp[JMPBackClosed] //jump back and continiue with original steam function
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}
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}
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}
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