147 lines
5.5 KiB
C
147 lines
5.5 KiB
C
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//=--------------------------------------------------------------------------=
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// Util.H
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//=--------------------------------------------------------------------------=
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// Copyright 1995-1996 Microsoft Corporation. All Rights Reserved.
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//=--------------------------------------------------------------------------=
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//
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// contains utilities that we will find useful.
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//
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#ifndef _UTIL_H_
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#include "Globals.H"
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//=--------------------------------------------------------------------------=
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// Misc Helper Routines
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//=--------------------------------------------------------------------------=
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//
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HWND GetParkingWindow(void);
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HINSTANCE GetResourceHandle(void);
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//=--------------------------------------------------------------------------=
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// miscellaneous [useful] numerical constants
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//=--------------------------------------------------------------------------=
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// the length of a guid once printed out with -'s, leading and trailing bracket,
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// plus 1 for NULL
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//
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#define GUID_STR_LEN 40
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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(g_hHeap, 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(g_hHeap, 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 and ANSI String, 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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// LPSTR pszA;
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// pszA = MyGetAnsiStringRoutine();
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// MAKE_WIDEPTR_FROMANSI(pwsz, pszA);
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// MyUseWideStringRoutine(pwsz);
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// ...
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//
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// similarily for MAKE_ANSIPTR_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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#define MAKE_WIDEPTR_FROMANSI(ptrname, ansistr) \
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long __l##ptrname = (lstrlen(ansistr) + 1) * sizeof(WCHAR); \
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TempBuffer __TempBuffer##ptrname(__l##ptrname); \
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MultiByteToWideChar(CP_ACP, 0, ansistr, -1, (LPWSTR)__TempBuffer##ptrname.GetBuffer(), __l##ptrname); \
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LPWSTR ptrname = (LPWSTR)__TempBuffer##ptrname.GetBuffer()
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//
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// Note: allocate lstrlenW(widestr) * 2 because its possible for a UNICODE
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// character to map to 2 ansi characters this is a quick guarantee that enough
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// space will be allocated.
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//
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#define MAKE_ANSIPTR_FROMWIDE(ptrname, widestr) \
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long __l##ptrname = (lstrlenW(widestr) + 1) * 2 * sizeof(char); \
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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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LPSTR ptrname = (LPSTR)__TempBuffer##ptrname.GetBuffer()
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#define STR_BSTR 0
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#define STR_OLESTR 1
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#define BSTRFROMANSI(x) (BSTR)MakeWideStrFromAnsi((LPSTR)(x), STR_BSTR)
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#define OLESTRFROMANSI(x) (LPOLESTR)MakeWideStrFromAnsi((LPSTR)(x), STR_OLESTR)
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#define BSTRFROMRESID(x) (BSTR)MakeWideStrFromResourceId(x, STR_BSTR)
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#define OLESTRFROMRESID(x) (LPOLESTR)MakeWideStrFromResourceId(x, STR_OLESTR)
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#define COPYOLESTR(x) (LPOLESTR)MakeWideStrFromWide(x, STR_OLESTR)
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#define COPYBSTR(x) (BSTR)MakeWideStrFromWide(x, STR_BSTR)
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LPWSTR MakeWideStrFromAnsi(LPSTR, BYTE bType);
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LPWSTR MakeWideStrFromResourceId(WORD, BYTE bType);
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LPWSTR MakeWideStrFromWide(LPWSTR, BYTE bType);
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// takes a GUID, and a pointer to a buffer, and places the string form of the
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// GUID in said buffer.
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//
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int StringFromGuidA(REFIID, LPSTR);
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//=--------------------------------------------------------------------------=
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// registry helpers.
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//
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// takes some information about an Automation Object, and places all the
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// relevant information about it in the registry.
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//
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BOOL RegSetMultipleValues(HKEY hkey, ...);
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BOOL RegisterUnknownObject(LPCSTR pszObjectName, REFCLSID riidObject);
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BOOL RegisterAutomationObject(LPCSTR pszLibName, LPCSTR pszObjectName, long lVersion, REFCLSID riidLibrary, REFCLSID riidObject);
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BOOL RegisterControlObject(LPCSTR pszLibName, LPCSTR pszObjectName, long lVersion, REFCLSID riidLibrary, REFCLSID riidObject, DWORD dwMiscStatus, WORD wToolboxBitmapId);
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BOOL UnregisterUnknownObject(REFCLSID riidObject);
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BOOL UnregisterAutomationObject(LPCSTR pszLibName, LPCSTR pszObjectName, long lVersion, REFCLSID riidObject);
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#define UnregisterControlObject UnregisterAutomationObject
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BOOL UnregisterTypeLibrary(REFCLSID riidLibrary);
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// deletes a key in the registr and all of it's subkeys
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//
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BOOL DeleteKeyAndSubKeys(HKEY hk, LPSTR pszSubKey);
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//=--------------------------------------------------------------------------=
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// conversion helpers.
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//
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void HiMetricToPixel(const SIZEL *pSizeInHiMetric, SIZEL *pSizeinPixels);
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void PixelToHiMetric(const SIZEL *pSizeInPixels, SIZEL *pSizeInHiMetric);
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#define _UTIL_H_
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#endif // _UTIL_H_
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