752 lines
16 KiB
C
752 lines
16 KiB
C
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/*++
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Copyright (c) 1994-1998 Microsoft Corporation
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Module Name :
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msg.h
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Abstract:
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Message Functions Definitions
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Author:
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Ronald Meijer (ronaldm)
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Project:
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Internet Services Manager
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Revision History:
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--*/
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#ifndef _MSG_H
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#define _MSG_H
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//
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// Helper macro to override an error message until the
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// end of the current scope.
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//
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#define TEMP_ERROR_OVERRIDE(hr, nID)\
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CErrorOverride err##hr##to##nID##__LINE__(hr, nID)
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//
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// Slightly easier syntax to register a facility
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//
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#define REGISTER_FACILITY(dwCode, lpSource)\
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CError::RegisterFacility(dwCode, lpSource)
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//
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// Helper Function
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//
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COMDLL HRESULT GetLastHRESULT();
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typedef struct tagFACILITY
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{
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LPCTSTR lpszDll;
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UINT nTextID;
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} FACILITY;
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typedef CMap<DWORD, DWORD &, CString, CString &> CMapDWORDtoCString;
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typedef CMap<HRESULT, HRESULT &, UINT, UINT &> CMapHRESULTtoUINT;
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class COMDLL CError
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/*++
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Class Description:
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Error handling class, works for both HRESULT and old-style DWORD
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error codes. Construct with or assign a DWORD or HRESULT error
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return code, and the object can then be used to determine success
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or failure, and the object provides text for the error code either
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directly, in a message, or formatted with additional text. Also,
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the CError object understands the range of winsock errors and
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lanman errors, and looks for them in the appropriate places.
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The object can be referenced as a BOOL, a DWORD, an HRESULT, or
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a LPCTSTR as a success/failure, a WIN32 error, and HRESULT or
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the text equivalent respectively.
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Example of typical programme flow:
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//
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// Use IDS_MY_ERROR for access denied errors for the
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// duration of this scope.
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//
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TEMP_ERROR_OVERRIDE(ERROR_ACCESS_DENIED, IDS_MY_ERROR);
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CError err(FunctionWhichReturnsHresult());
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if (!err.MessageBoxOnFailure())
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{
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//
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// If we failed, this already displayed the error
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// message in a messagebox. Only when we succeed
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// we get here.
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//
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... stuff ...
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}
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SomeWinApiWhichSetsLastError();
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err.GetLastWinError();
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if (err.Failed())
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{
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printf("WIN32 Error code %ld\nHRESULT %ld\nText: %s\n",
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(DWORD)err,
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(HRESULT)err,
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(LPCTSTR)err
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);
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}
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Public Interface:
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TextFromHRESULT : Convert HRESULT to text
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TextFromHRESULTExpand : Expand %h string to error text, %H to error code
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MessageBox : Display error in a messagebox
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MessageBoxFormat : Use %h string as format in messagebox
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MessageBoxOnFailure : Display message if error is a failure
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MessageBoxLastError : Display last error in a messagebox
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AddOverride : Add message override with string ID
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RemoveOverride : Remove message override
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RegisterFacility : Register facility
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UnregisterFacility : Unregister facility
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Succeeded : Determine if the error code indicates a success
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Failed : Determine if the error code indicates a failure
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CError : Constructors
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Reset : Reset error code
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GetLastWinError : Assign internal code to GetLastError
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SetLastWinError : Set last error from internal code
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operator = : Assignment operators
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operator == : Comparison operators
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operator != : Comparison operators
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operator HRESULT : Conversion operator
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operator DWORD : Conversion operator
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operator BOOL : Conversion operator
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operator LPCTSTR : Conversion operator
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--*/
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{
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#define IS_HRESULT(hr) (hr & 0xffff0000)
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#define REMOVE_OVERRIDE ((UINT)-1)
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#define NO_HELP_CONTEXT ((UINT)-1)
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#define USE_LAST_ERROR (TRUE)
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//
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// Private Internal FACILITY codes
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//
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#define FACILITY_WINSOCK (0xffe)
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#define FACILITY_LANMAN (0xfff)
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//
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// Static Helpers
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//
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public:
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//
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// Success/Failure determinants, works regardless
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// of whether hrCode is a DWORD or HRESULT
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//
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static BOOL Succeeded(HRESULT hrCode);
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static BOOL Failed(HRESULT hrCode);
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//
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// Convert to text
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//
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static HRESULT TextFromHRESULT(
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IN HRESULT hrCode,
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OUT LPTSTR szBuffer,
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OUT DWORD cchBuffer
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);
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//
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// As above, with a CString
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//
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static HRESULT TextFromHRESULT(
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IN HRESULT hrCode,
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OUT CString & strBuffer
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);
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//
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// Expand %h to error message from hrcode
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//
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static LPCTSTR TextFromHRESULTExpand(
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IN HRESULT hrCode,
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OUT LPTSTR szBuffer,
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OUT DWORD cchBuffer,
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OUT HRESULT * phResult = NULL
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);
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//
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// As above with CString
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//
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static LPCTSTR TextFromHRESULTExpand(
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IN HRESULT hrCode,
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OUT CString & strBuffer
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);
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//
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// Display text in error messagebox
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//
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static int MessageBox(
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IN HRESULT hrCode,
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IN UINT nType = MB_OK,
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IN UINT nHelpContext = NO_HELP_CONTEXT
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);
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//
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// Display last error in messagebox
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//
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static int MessageBoxLastError(
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IN UINT nType = MB_OK,
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IN UINT nHelpContext = NO_HELP_CONTEXT
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);
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//
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// Guarantee return is WIN32 error code
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//
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static DWORD Win32Error(HRESULT hrCode) { return HRESULT_CODE(hrCode); }
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//
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// Guarantee return is a true HRESULT
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//
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static HRESULT HResult(HRESULT hrCode) { return HRESULT_FROM_WIN32(hrCode); }
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//
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// Add override for specific error code.
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// Use -1 to remove the override. This function
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// will return the previous override (or -1)
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//
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static UINT AddOverride(
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IN HRESULT hrCode,
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IN UINT nMessage = REMOVE_OVERRIDE
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);
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static void RemoveOverride(
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IN HRESULT hrCode
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);
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static void RemoveAllOverrides();
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//
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// Register a DLL for a given facility code.
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// Use NULL to unregister the facility
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//
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static void RegisterFacility(
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IN DWORD dwFacility,
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IN LPCSTR lpDLL = NULL
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);
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static void UnregisterFacility(
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IN DWORD dwFacility
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);
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//
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// Constructor/Destructor
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//
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public:
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//
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// If constructed with TRUE, the object is initialized to
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// last error. It's set to ERROR_SUCCESS otherwise (default case)
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//
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CError(BOOL fUseLastError = FALSE);
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CError(HRESULT hrCode);
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CError(DWORD dwCode);
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~CError();
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//
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// Helpers
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//
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public:
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BOOL Succeeded() const { return SUCCEEDED(m_hrCode); }
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BOOL Failed() const { return FAILED(m_hrCode); }
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HRESULT TextFromHRESULT(
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OUT LPTSTR szBuffer,
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OUT DWORD cchBuffer
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) const;
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HRESULT TextFromHRESULT(
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OUT CString & strMsg
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);
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LPCTSTR TextFromHRESULTExpand(
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OUT LPTSTR szBuffer,
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OUT DWORD cchBuffer,
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OUT HRESULT * phResult = NULL
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);
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LPCTSTR TextFromHRESULTExpand(
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OUT CString & strBuffer
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);
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int MessageBox(
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IN UINT nType = MB_OK,
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IN UINT nHelpContext = NO_HELP_CONTEXT
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) const;
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BOOL MessageBoxOnFailure(
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IN UINT nType = MB_OK,
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IN UINT nHelpContext = NO_HELP_CONTEXT
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) const;
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int MessageBoxFormat(
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IN UINT nFmt,
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IN UINT nType,
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IN UINT nHelpContext,
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...
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) const;
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void Reset();
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void GetLastWinError();
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void SetLastWinError() const;
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DWORD Win32Error() const;
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HRESULT HResult() const { return m_hrCode; }
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//
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// Assignment Operators
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//
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public:
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const CError & operator =(HRESULT hr);
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const CError & operator =(const CError & err);
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//
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// Comparison Operators
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//
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public:
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const BOOL operator ==(HRESULT hr);
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const BOOL operator ==(CError & err);
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const BOOL operator !=(HRESULT hr);
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const BOOL operator !=(CError & err);
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//
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// Conversion Operators
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//
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public:
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operator const HRESULT() const { return m_hrCode; }
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operator const DWORD() const;
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operator const BOOL() const;
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operator LPCTSTR();
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#ifdef _DEBUG
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public:
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//
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// CDumpContext stream operator
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//
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inline friend CDumpContext & AFXAPI operator <<(
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IN OUT CDumpContext & dc,
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IN const CError & value
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)
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{
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return dc << (DWORD)value.m_hrCode;
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}
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#endif // _DEBUG
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protected:
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static HRESULT CvtToInternalFormat(HRESULT hrCode);
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//
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// Expand escape code
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//
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static BOOL ExpandEscapeCode(
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IN LPTSTR szBuffer,
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IN DWORD cchBuffer,
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OUT IN LPTSTR & lp,
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IN CString & strReplacement,
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OUT HRESULT & hr
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);
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//
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// Check for override message
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//
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static BOOL HasOverride(
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IN HRESULT hrCode,
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OUT UINT * pnMessage = NULL
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);
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//
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// Check for FACILITY dll
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//
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static LPCTSTR FindFacility(
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IN DWORD dwFacility
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);
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protected:
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friend BOOL InitErrorFunctionality();
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friend void TerminateErrorFunctionality();
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static BOOL AllocateStatics();
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static void DeAllocateStatics();
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static BOOL AreStaticsAllocated() { return s_fAllocated; }
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protected:
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static const TCHAR s_chEscape; // Escape character
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static const TCHAR s_chEscText; // Escape code for text
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static const TCHAR s_chEscNumber; // Escape code for error code
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static LPCTSTR s_cszLMDLL; // Lanman Message DLL
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static LPCTSTR s_cszWSDLL; // Winsock Message DLL
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static LPCTSTR s_cszFacility[]; // Facility Table
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static HRESULT s_cdwMinLMErr; // Lanman Error Range
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static HRESULT s_cdwMaxLMErr; // Lanman Error Range
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static HRESULT s_cdwMinWSErr; // Winsock Error Range
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static HRESULT s_cdwMaxWSErr; // Winsock Error Range
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static DWORD s_cdwFacilities; // Number of facility items
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//
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// Allocated objects
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//
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static CString * s_pstrDefError; // Default Error String
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static CString * s_pstrDefSuccs; // Default Success String
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static CMapDWORDtoCString * s_pmapFacilities;
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static CMapHRESULTtoUINT * s_pmapOverrides;
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static BOOL s_fAllocated;
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protected:
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const CError & Construct(HRESULT hr);
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const CError & Construct(const CError & err);
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|
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private:
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HRESULT m_hrCode;
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CString * m_pstrBuff;
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};
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|
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|
||
|
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class COMDLL CErrorOverride
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/*++
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||
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Class Description:
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||
|
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|
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Error override class -- restores the override on destructor
|
||
|
|
see TEMP_ERROR_OVERRIDE macro below
|
||
|
|
|
||
|
|
Public Interface:
|
||
|
|
|
||
|
|
CErrorOverride : Constructor
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
CErrorOverride(HRESULT hr, UINT nID);
|
||
|
|
~CErrorOverride();
|
||
|
|
|
||
|
|
private:
|
||
|
|
HRESULT m_hrCode;
|
||
|
|
UINT m_nPrev;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// Inline Expansions
|
||
|
|
//
|
||
|
|
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
|
||
|
|
|
||
|
|
inline HRESULT GetLastHRESULT()
|
||
|
|
{
|
||
|
|
return CError::HResult(::GetLastError());
|
||
|
|
}
|
||
|
|
|
||
|
|
inline /* static */ BOOL CError::Succeeded(HRESULT hrCode)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Works with either HRESULT or WIN32 error code
|
||
|
|
//
|
||
|
|
return IS_HRESULT(hrCode)
|
||
|
|
? SUCCEEDED(hrCode)
|
||
|
|
: hrCode == ERROR_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline /* static */ BOOL CError::Failed(HRESULT hrCode)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Works with either HRESULT or WIN32 error code
|
||
|
|
//
|
||
|
|
return IS_HRESULT(hrCode)
|
||
|
|
? FAILED(hrCode)
|
||
|
|
: hrCode != ERROR_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline /* static */ int MessageBoxLastError(
|
||
|
|
IN UINT nType,
|
||
|
|
IN UINT nHelpContext
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return CError::MessageBox(
|
||
|
|
::GetLastError(),
|
||
|
|
nType,
|
||
|
|
nHelpContext
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
|
||
|
|
inline /* static */ DWORD CError::Win32Error(
|
||
|
|
IN HRESULT hrCode
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return HRESULT_CODE(hrCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline /* static */ HRESULT CError::HResult(
|
||
|
|
IN HRESULT hrCode
|
||
|
|
)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This will leave true HRESULTs intact
|
||
|
|
//
|
||
|
|
return HRESULT_FROM_WIN32(hrCode);
|
||
|
|
}
|
||
|
|
#endif // 0
|
||
|
|
|
||
|
|
inline /* static */ void CError::RemoveOverride(
|
||
|
|
IN HRESULT hrCode
|
||
|
|
)
|
||
|
|
{
|
||
|
|
(void)CError::AddOverride(hrCode, REMOVE_OVERRIDE);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline /* static */ void CError::UnregisterFacility(
|
||
|
|
IN DWORD dwFacility
|
||
|
|
)
|
||
|
|
{
|
||
|
|
RegisterFacility(dwFacility, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CError::CError(
|
||
|
|
IN BOOL fUseLastError
|
||
|
|
)
|
||
|
|
: m_pstrBuff(NULL)
|
||
|
|
{
|
||
|
|
Construct(fUseLastError ? ::GetLastError() : ERROR_SUCCESS);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CError::CError(HRESULT hrCode)
|
||
|
|
: m_pstrBuff(NULL)
|
||
|
|
{
|
||
|
|
Construct(hrCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CError::CError(DWORD dwCode)
|
||
|
|
: m_pstrBuff(NULL)
|
||
|
|
{
|
||
|
|
Construct((HRESULT)dwCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline HRESULT CError::TextFromHRESULT(
|
||
|
|
OUT LPTSTR szBuffer,
|
||
|
|
OUT DWORD cchBuffer
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return CError::TextFromHRESULT(m_hrCode, szBuffer, cchBuffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline HRESULT CError::TextFromHRESULT(
|
||
|
|
OUT CString & strBuffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return CError::TextFromHRESULT(m_hrCode, strBuffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline LPCTSTR CError::TextFromHRESULTExpand(
|
||
|
|
OUT LPTSTR szBuffer,
|
||
|
|
OUT DWORD cchBuffer,
|
||
|
|
OUT HRESULT * phResult
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return CError::TextFromHRESULTExpand(
|
||
|
|
m_hrCode,
|
||
|
|
szBuffer,
|
||
|
|
cchBuffer,
|
||
|
|
phResult
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline LPCTSTR CError::TextFromHRESULTExpand(
|
||
|
|
OUT CString & strBuffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return CError::TextFromHRESULTExpand(m_hrCode, strBuffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline int CError::MessageBox(
|
||
|
|
IN UINT nType,
|
||
|
|
IN UINT nHelpContext
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return CError::MessageBox(m_hrCode, nType, nHelpContext);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline DWORD CError::Win32Error() const
|
||
|
|
{
|
||
|
|
return CError::Win32Error(m_hrCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CError::Reset()
|
||
|
|
{
|
||
|
|
m_hrCode = S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CError::GetLastWinError()
|
||
|
|
{
|
||
|
|
Construct(::GetLastError());
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CError::SetLastWinError() const
|
||
|
|
{
|
||
|
|
::SetLastError(Win32Error(m_hrCode));
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const CError & CError::operator =(HRESULT hr)
|
||
|
|
{
|
||
|
|
return Construct(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const CError & CError::operator =(const CError & err)
|
||
|
|
{
|
||
|
|
return Construct(err);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const BOOL CError::operator ==(HRESULT hr)
|
||
|
|
{
|
||
|
|
return m_hrCode == hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const BOOL CError::operator ==(CError & err)
|
||
|
|
{
|
||
|
|
return m_hrCode == err.m_hrCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const BOOL CError::operator !=(HRESULT hr)
|
||
|
|
{
|
||
|
|
return m_hrCode != hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline const BOOL CError::operator !=(CError & err)
|
||
|
|
{
|
||
|
|
return m_hrCode != err.m_hrCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CError::operator const DWORD() const
|
||
|
|
{
|
||
|
|
return Win32Error();
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CError::operator const BOOL() const
|
||
|
|
{
|
||
|
|
return Succeeded();
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CErrorOverride::CErrorOverride(
|
||
|
|
IN HRESULT hr,
|
||
|
|
IN UINT nID
|
||
|
|
)
|
||
|
|
: m_hrCode(hr),
|
||
|
|
m_nPrev(CError::AddOverride(hr, nID))
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CErrorOverride::~CErrorOverride()
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Restore the old message
|
||
|
|
//
|
||
|
|
CError::AddOverride(m_hrCode, m_nPrev);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// Clear text warning dialog
|
||
|
|
//
|
||
|
|
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
class COMDLL CClearTxtDlg : public CDialog
|
||
|
|
{
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Class Description:
|
||
|
|
|
||
|
|
Dialog which displays the clear text warning
|
||
|
|
|
||
|
|
Public Interface:
|
||
|
|
|
||
|
|
CClearTxtDlg : Constructor
|
||
|
|
|
||
|
|
--*/
|
||
|
|
public:
|
||
|
|
//
|
||
|
|
// Constructor
|
||
|
|
//
|
||
|
|
CClearTxtDlg(CWnd * pParent = NULL);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Dialog Data
|
||
|
|
//
|
||
|
|
protected:
|
||
|
|
//{{AFX_DATA(CClearTxtDlg)
|
||
|
|
enum { IDD = IDD_CLEARTEXTWARNING };
|
||
|
|
//}}AFX_DATA
|
||
|
|
|
||
|
|
//
|
||
|
|
// Overrides
|
||
|
|
//
|
||
|
|
protected:
|
||
|
|
// ClassWizard generated virtual function overrides
|
||
|
|
//{{AFX_VIRTUAL(CClearTxtDlg)
|
||
|
|
protected:
|
||
|
|
virtual void DoDataExchange(CDataExchange * pDX);
|
||
|
|
//}}AFX_VIRTUAL
|
||
|
|
|
||
|
|
//
|
||
|
|
// Implementation
|
||
|
|
//
|
||
|
|
protected:
|
||
|
|
// Generated message map functions
|
||
|
|
//{{AFX_MSG(CClearTxtDlg)
|
||
|
|
virtual BOOL OnInitDialog();
|
||
|
|
//}}AFX_MSG
|
||
|
|
DECLARE_MESSAGE_MAP()
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// AfxMessageBox helpers
|
||
|
|
//
|
||
|
|
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
|
||
|
|
|
||
|
|
inline BOOL NoYesMessageBox(UINT nID)
|
||
|
|
{
|
||
|
|
return AfxMessageBox(nID, MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON2) == IDYES;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline BOOL NoYesMessageBox(CString & str)
|
||
|
|
{
|
||
|
|
return AfxMessageBox(str, MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON2) == IDYES;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline BOOL YesNoMessageBox(UINT nID)
|
||
|
|
{
|
||
|
|
return AfxMessageBox(nID, MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1) == IDYES;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline BOOL YesNoMessageBox(CString & str)
|
||
|
|
{
|
||
|
|
return AfxMessageBox(str, MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1) == IDYES;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // _MSG_H
|