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132 lines
4.7 KiB
132 lines
4.7 KiB
//==============================================================;
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//
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// This source code is only intended as a supplement to existing Microsoft documentation.
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//
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//
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//
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
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//
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//
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//
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//==============================================================;
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#ifndef _MMC_GLOBALS_H
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#define _MMC_GLOBALS_H
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#include <tchar.h>
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#ifndef STRINGS_ONLY
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#define IDM_BUTTON1 0x100
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#define IDM_BUTTON2 0x101
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extern HINSTANCE g_hinst;
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extern ULONG g_uObjects;
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#define OBJECT_CREATED InterlockedIncrement((long *)&g_uObjects);
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#define OBJECT_DESTROYED InterlockedDecrement((long *)&g_uObjects);
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// uncomment the following #define to enable message cracking
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// #define MMC_CRACK_MESSAGES
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void MMCN_Crack(BOOL bComponentData,
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IDataObject *pDataObject,
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IComponentData *pCompData,
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IComponent *pComp,
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MMC_NOTIFY_TYPE event,
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LPARAM arg,
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LPARAM param);
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#endif
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//=--------------------------------------------------------------------------=
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// allocates a temporary buffer that will disappear when it goes out of scope
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// NOTE: be careful of that -- make sure you use the string in the same or
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// nested scope in which you created this buffer. people should not use this
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// class directly. use the macro(s) below.
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//
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class TempBuffer {
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public:
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TempBuffer(ULONG cBytes) {
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m_pBuf = (cBytes <= 120) ? &m_szTmpBuf : HeapAlloc(GetProcessHeap(), 0, cBytes);
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m_fHeapAlloc = (cBytes > 120);
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}
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~TempBuffer() {
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if (m_pBuf && m_fHeapAlloc) HeapFree(GetProcessHeap(), 0, m_pBuf);
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}
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void *GetBuffer() {
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return m_pBuf;
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}
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private:
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void *m_pBuf;
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// we'll use this temp buffer for small cases.
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//
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char m_szTmpBuf[120];
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unsigned m_fHeapAlloc:1;
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};
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//=--------------------------------------------------------------------------=
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// string helpers.
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//
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// given a _TCHAR, copy it into a wide buffer.
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// be careful about scoping when using this macro!
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//
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// how to use the below two macros:
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//
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// ...
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// LPTSTR pszT;
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// pszT = MyGetTStringRoutine();
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// MAKE_WIDEPTR_FROMSTR(pwsz, pszT);
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// MyUseWideStringRoutine(pwsz);
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// ...
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#ifdef UNICODE
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#define MAKE_WIDEPTR_FROMTSTR(ptrname, tstr) \
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long __l##ptrname = (lstrlenW(tstr) + 1) * sizeof(WCHAR); \
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TempBuffer __TempBuffer##ptrname(__l##ptrname); \
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lstrcpyW((LPWSTR)__TempBuffer##ptrname.GetBuffer(), tstr); \
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LPWSTR ptrname = (LPWSTR)__TempBuffer##ptrname.GetBuffer()
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#else // ANSI
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#define MAKE_WIDEPTR_FROMTSTR(ptrname, tstr) \
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long __l##ptrname = (lstrlenA(tstr) + 1) * sizeof(WCHAR); \
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TempBuffer __TempBuffer##ptrname(__l##ptrname); \
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MultiByteToWideChar(CP_ACP, 0, tstr, -1, (LPWSTR)__TempBuffer##ptrname.GetBuffer(), __l##ptrname); \
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LPWSTR ptrname = (LPWSTR)__TempBuffer##ptrname.GetBuffer()
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#endif
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#ifdef UNICODE
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#define MAKE_WIDEPTR_FROMTSTR_ALLOC(ptrname, tstr) \
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long __l##ptrname = (lstrlenW(tstr) + 1) * sizeof(WCHAR); \
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LPWSTR ptrname = (LPWSTR)CoTaskMemAlloc(__l##ptrname); \
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lstrcpyW((LPWSTR)ptrname, tstr)
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#else // ANSI
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#define MAKE_WIDEPTR_FROMTSTR_ALLOC(ptrname, tstr) \
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long __l##ptrname = (lstrlenA(tstr) + 1) * sizeof(WCHAR); \
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LPWSTR ptrname = (LPWSTR)CoTaskMemAlloc(__l##ptrname); \
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MultiByteToWideChar(CP_ACP, 0, tstr, -1, ptrname, __l##ptrname)
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#endif
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//
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// similarily for MAKE_TSTRPTR_FROMWIDE. note that the first param does not
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// have to be declared, and no clean up must be done.
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//
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// * 2 for DBCS handling in below length computation
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//
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#ifdef UNICODE
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#define MAKE_TSTRPTR_FROMWIDE(ptrname, widestr) \
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long __l##ptrname = (wcslen(widestr) + 1) * 2 * sizeof(TCHAR); \
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TempBuffer __TempBuffer##ptrname(__l##ptrname); \
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lstrcpyW((LPTSTR)__TempBuffer##ptrname.GetBuffer(), widestr); \
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LPTSTR ptrname = (LPTSTR)__TempBuffer##ptrname.GetBuffer()
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#else // ANSI
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#define MAKE_TSTRPTR_FROMWIDE(ptrname, widestr) \
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long __l##ptrname = (wcslen(widestr) + 1) * 2 * sizeof(TCHAR); \
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TempBuffer __TempBuffer##ptrname(__l##ptrname); \
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WideCharToMultiByte(CP_ACP, 0, widestr, -1, (LPSTR)__TempBuffer##ptrname.GetBuffer(), __l##ptrname, NULL, NULL); \
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LPTSTR ptrname = (LPTSTR)__TempBuffer##ptrname.GetBuffer()
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#endif
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#endif // _MMC_GLOBALS_H
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