windows-nt/Source/XPSP1/NT/printscan/ui/webview/camocx/camocx.cpp

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2020-09-26 03:20:57 -05:00
// camocx.cpp : Implementation of DLL Exports.
// Note: Proxy/Stub Information
// To merge the proxy/stub code into the object DLL, add the file
// dlldatax.c to the project. Make sure precompiled headers
// are turned off for this file, and add _MERGE_PROXYSTUB to the
// defines for the project.
//
// If you are not running WinNT4.0 or Win95 with DCOM, then you
// need to remove the following define from dlldatax.c
// #define _WIN32_WINNT 0x0400
//
// Further, if you are running MIDL without /Oicf switch, you also
// need to remove the following define from dlldatax.c.
// #define USE_STUBLESS_PROXY
//
// Modify the custom build rule for camocx.idl by adding the following
// files to the Outputs.
// camocx_p.c
// dlldata.c
// To build a separate proxy/stub DLL,
// run nmake -f camocxps.mk in the project directory.
#include "precomp.h"
#pragma hdrstop
#include "wiaview_i.c"
#ifdef _MERGE_PROXYSTUB
extern "C" HINSTANCE hProxyDll;
#endif
CComModule _Module;
HINSTANCE g_hInstance;
BEGIN_OBJECT_MAP(ObjectMap)
OBJECT_ENTRY(CLSID_VideoPreview, CVideoPreview)
END_OBJECT_MAP()
/////////////////////////////////////////////////////////////////////////////
// DLL Entry Point
extern "C"
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
lpReserved;
#ifdef _MERGE_PROXYSTUB
if (!PrxDllMain(hInstance, dwReason, lpReserved))
return FALSE;
#endif
if (dwReason == DLL_PROCESS_ATTACH)
{
SHFusionInitializeFromModuleID( hInstance, 123 );
_Module.Init(ObjectMap, hInstance /* &LIBID_WIAVIEWLib*/);
WIA_DEBUG_CREATE( hInstance );
DisableThreadLibraryCalls(hInstance);
g_hInstance = hInstance;
}
else if (dwReason == DLL_PROCESS_DETACH)
{
SHFusionUninitialize();
WIA_DEBUG_DESTROY();
_Module.Term();
}
return TRUE; // ok
}
/////////////////////////////////////////////////////////////////////////////
// Used to determine whether the DLL can be unloaded by OLE
STDAPI DllCanUnloadNow(void)
{
HRESULT hr;
#ifdef _MERGE_PROXYSTUB
if (PrxDllCanUnloadNow() != S_OK)
return S_FALSE;
#endif
hr = (_Module.GetLockCount()==0) ? S_OK : S_FALSE;
return hr;
}
/////////////////////////////////////////////////////////////////////////////
// Returns a class factory to create an object of the requested type
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
#ifdef _MERGE_PROXYSTUB
if (PrxDllGetClassObject(rclsid, riid, ppv) == S_OK)
return S_OK;
#endif
return _Module.GetClassObject(rclsid, riid, ppv);
}
/////////////////////////////////////////////////////////////////////////////
// DllRegisterServer - Adds entries to the system registry
STDAPI DllRegisterServer(void)
{
#ifdef _MERGE_PROXYSTUB
HRESULT hRes = PrxDllRegisterServer();
if (FAILED(hRes))
return hRes;
#endif
// registers object, typelib and all interfaces in typelib
return _Module.RegisterServer(TRUE);
}
/////////////////////////////////////////////////////////////////////////////
// DllUnregisterServer - Removes entries from the system registry
STDAPI DllUnregisterServer(void)
{
#ifdef _MERGE_PROXYSTUB
PrxDllUnregisterServer();
#endif
return _Module.UnregisterServer();
}