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