117 lines
2.5 KiB
C++
117 lines
2.5 KiB
C++
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// Copyright (c) 1998 Microsoft Corporation
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// dm32dll.cpp
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//
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// Dll entry points
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//
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#include <objbase.h>
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#include <assert.h>
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#include <mmsystem.h>
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#include <dsoundp.h>
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#include "dmusicc.h"
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#include "..\dmusic\dmusicp.h"
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#include "debug.h"
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#include "dmusic32.h"
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#include "dm32p.h"
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// Globals
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//
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// Dll's hModule
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//
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HMODULE g_hModule = NULL;
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extern "C" BOOL PASCAL dmthunk_ThunkConnect32(LPCSTR pszDll16, LPCSTR pszDll32, HINSTANCE hinst, DWORD dwReason);
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static CONST TCHAR pszDll16[] = "DMUSIC16.DLL";
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static CONST TCHAR pszDll32[] = "DMUSIC32.DLL";
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#ifdef DBG
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static char* aszReasons[] =
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{
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"DLL_PROCESS_DETACH",
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"DLL_PROCESS_ATTACH",
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"DLL_THREAD_ATTACH",
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"DLL_THREAD_DETACH"
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};
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const DWORD nReasons = (sizeof(aszReasons) / sizeof(char*));
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#endif
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// Standard Win32 DllMain
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//
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BOOL APIENTRY DllMain(HINSTANCE hModule,
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DWORD dwReason,
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void *lpReserved)
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{
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OSVERSIONINFO osvi;
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HANDLE ph;
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static int nReferenceCount = 0;
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#ifdef DBG
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if (dwReason < nReasons)
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{
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Trace(2, "DllMain: %s\n", (LPSTR)aszReasons[dwReason]);
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}
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else
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{
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Trace(2, "DllMain: Unknown dwReason <%u>\n", dwReason);
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}
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#endif
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switch(dwReason)
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{
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case DLL_PROCESS_ATTACH:
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if (++nReferenceCount == 1)
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{
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#ifdef DBG
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DebugInit();
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#endif
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if (!DisableThreadLibraryCalls(hModule))
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{
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Trace(0, "DisableThreadLibraryCalls failed.\n");
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}
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if (!OpenMMDEVLDR())
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{
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Trace(0, "OpenMMDEVLDR failed.\n");
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}
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}
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break;
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case DLL_PROCESS_DETACH:
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if (--nReferenceCount == 0)
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{
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Trace(1, "Last process detach\n");
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CloseMMDEVLDR();
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}
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break;
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default:
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Trace(-1, "Got a non-process at/detach!\n");
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break;
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}
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if (dwReason == DLL_PROCESS_ATTACH)
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{
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g_hModule = hModule;
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osvi.dwOSVersionInfoSize = sizeof(osvi);
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GetVersionEx(&osvi);
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if (osvi.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS)
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{
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return FALSE;
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}
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}
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if (!dmthunk_ThunkConnect32(pszDll16, pszDll32, hModule, dwReason))
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{
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Trace(-1, "Could not connect to thunk layer! - not loading.\n");
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return FALSE;
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}
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return TRUE;
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}
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