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219 lines
11 KiB
219 lines
11 KiB
4 years ago
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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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Copyright 1998 Microsoft Corporation. All Rights Reserved.
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**************************************************************************/
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/**************************************************************************
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File: strblock.h
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Description: Programmer's interface to manipulate a block of string
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resources. It defines an API with functions to Create,
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Access, Modify & Destroy a string block.
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**************************************************************************/
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#ifndef _STRBLOCK_H
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#define _STRBLOCK_H
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#include <windows.h>
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// The number of strings in a block. The string resource is internally
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// stored as blocks of NO_OF_STRINGS_PER_BLOCK ( = 16) strings. A block
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// is the smallest granularity for manipulating a string resource.
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#define NO_OF_STRINGS_PER_BLOCK 16
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// Error codes for operations on a string block.
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typedef enum {
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STRBLOCKERR_OK, // The last operation was successful.
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STRBLOCKERR_NOMEMORY, // The last operation on the block failed due to inadequate memory.
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STRBLOCKERR_INVALIDINDEX, // The index passed was incorrect.
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STRBLOCKERR_UPDATEFAILED, // The specified app could not be updated.
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STRBLOCKERR_APPLOADFAILED, // The specified app could not be loaded.
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STRBLOCKERR_RESNOTFOUND, // The specified resource could not be located.
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STRBLOCKERR_LOADRESFAILED, // The specified resource could not be loaded.
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STRBLOCKERR_INVALIDBLOCK, // The specified block handle is invalid.
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STRBLOCKERR_STRINVALID, // The string pointer passed was invalid.
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STRBLOCKERR_UPDATENOTIMPLEMENTED, // UpdateResource not implemented.
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STRBLOCKERR_UNKNOWN // An unspecified error.
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} STRBLOCKERR;
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// Handle to a block of string. We hide the internal format we use for manipulating
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// a string resource by providing access to it through a handle.
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DECLARE_HANDLE(HSTRBLOCK);
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// Methods to access a string block.
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// Function: HSTRBLOCK WINAPI GetStringBlockA( LPCSTR strAppName, UINT nBlockID,
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// WORD wLangID );
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// Purpose: Get the block of string with the specified ID & language from the
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// specified application (ANSI version).
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// LPCSTR strAppName: The name of the application.
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// UINT nBlockID: The ID of the block.
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// WORD wLangID: The language identifier. You can create a language
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// identifier using the macro, MAKELANGID.
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// Returns: Handle to a string block if successful, NULL otherwise.
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// Comments: This function creates a string block. Call DeleteStringBlock()
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// when you no longer need the block.
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HSTRBLOCK WINAPI GetStringBlockA( LPCSTR strAppName, UINT nBlockID, WORD wLangID );
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// Function: HSTRBLOCK WINAPI GetStringBlockW( LPCWSTR strAppName, UINT nBlockID,
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// WORD wLangID );
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// Purpose: Get the block of string with the specified ID & language from the
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// specified application (UNICODE version).
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// LPCWSTR strAppName: The name of the application.
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// UINT nBlockID: The ID of the block.
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// WORD wLangID: The language identifier. You can create a language
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// identifier using the macro, MAKELANGID.
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// Returns: Handle to a string block if successful, NULL otherwise.
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// Comments: This function creates a string block. Call DeleteStringBlock()
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// when you no longer need the block.
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HSTRBLOCK WINAPI GetStringBlockW( LPCWSTR strAppName, UINT nBlockID, WORD wLangID );
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// Function: BOOL WINAPI DeleteStringBlock( HSTRBLOCK hStrBlock );
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// Purpose: Delete a block of string.
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// HSTRBLOCK hStrBlock: The handle to the block.
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// Returns: TRUE if successful, FALSE on failure.
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// Comments: Call this function when you no longer need a block. Calling this function
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// frees the memory occupied by the block. Failure to delete a block
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// results in memory leaks.
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BOOL WINAPI DeleteStringBlock( HSTRBLOCK hStrBlock );
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// Function: int WINAPI GetStringLength( HSTRBLOCK hStrBlock, UINT nIndex );
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// Purpose: Get the length of a string in the block.
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// UINT nIndex: The zero-based index of the string in the block. The index can be
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// any value from 0 thru' (NO_OF_STRINGS_PER_BLOCK - 1).
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// Returns: If successful, the string length in number of characters, excluding the terminating
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// NULL character; -1 if the function fails.
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// Comments: Call this function to get the string length before calling GetString.
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int WINAPI GetStringLength( HSTRBLOCK hStrBlock, UINT nIndex );
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// Function: BOOL WINAPI GetStringA( HSTRBLOCK hStrBlock, UINT nIndex, LPSTR pszStr );
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// Purpose: Get the string at the specified index in the block (ANSI version).
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// UINT nIndex: The zero-based index of the string in the block. The index can be a value
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// from 0 through (NO_OF_STRINGS_PER_BLOCK - 1).
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// LPSTR pszStr: The pointer to the memory to which the string requested will be copied.
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// This memory should be large enough to contain the string.
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// Returns: TRUE on success, FALSE otherwise.
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// Comments: Before calling this function, call GetStringLength() to get the string length.
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BOOL WINAPI GetStringA( HSTRBLOCK hStrBlock, UINT nIndex, LPSTR pszStr );
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// Function: BOOL WINAPI GetStringW( HSTRBLOCK hStrBlock, UINT nIndex, LPWSTR pszStr );
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// Purpose: Get the string at the specified index in the block (UNICODE version).
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// UINT nIndex: The zero-based index of the string in the block. The index can be a value
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// from 0 through (NO_OF_STRINGS_PER_BLOCK - 1).
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// LPSTR pszStr: The pointer to the memory to which the string requested will be copied.
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// This memory should be large enough to contain the string.
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// Returns: TRUE on success, FALSE otherwise.
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// Comments: Before calling this function, call GetStringLength() to get the string length.
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BOOL WINAPI GetStringW( HSTRBLOCK hStrBlock, UINT nIndex, LPWSTR pszStr );
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// Function: BOOL WINAPI SetStringA( HSTRBLOCK hStrBlock, UINT nIndex, LPCSTR pszText );
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// Purpose: Change the string at the specified index in the block (ANSI version).
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// UINT nIndex: The zero-based index of the string in the block. The index can be a value
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// from 0 through (NO_OF_STRINGS_PER_BLOCK - 1).
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// LPCSTR pszText: The pointer to the new string.
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// Returns: TRUE on success, FALSE otherwise.
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BOOL WINAPI SetStringA( HSTRBLOCK hStrBlock, UINT nIndex, LPCSTR pszText );
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// Function: BOOL WINAPI SetStringW( HSTRBLOCK hStrBlock, UINT nIndex, LPCWSTR pszStr );
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// Purpose: Change the string at the specified index in the block (UNICODE version).
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// UINT nIndex: The zero-based index of the string in the block. The index can be a value
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// from 0 through (NO_OF_STRINGS_PER_BLOCK - 1).
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// LPCWSTR pszText: The pointer to the new string.
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// Returns: TRUE on success, FALSE otherwise.
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BOOL WINAPI SetStringW( HSTRBLOCK hStrBlock, UINT nIndex, LPCWSTR pszText );
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// Function: int WINAPI GetFirstStringID( HSTRBLOCK hStrBlock );
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// Purpose: Get the ID of the first string in the block.
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// Returns: The ID of the first string in the block. -1 if the function fails.
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int WINAPI GetFirstStringID( HSTRBLOCK hStrBlock );
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// Function: int WINAPI GetBlockID( HSTRBLOCK hStrBlock );
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// Purpose: Get the ID of the string block. This is the ID of the string block that was
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// specified when the block was created.
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// Returns: The block ID, if sucessful, or -1 on failure.
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int WINAPI GetBlockID( HSTRBLOCK hStrBlock );
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// Function: WORD WINAPI GetBlockLanguage( HSTRBLOCK hStrBlock );
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// Purpose: Get the identifier of the language for the string block. This is the language ID
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// specified when the block was created.
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// HSTRBLOCK hStrBlock: The handle to the string block.
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// Returns: The language ID of the block, if successful; 0 on failure.
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// Comments: For info on language IDs, refer help of MAKELANGID.
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WORD WINAPI GetBlockLanguage( HSTRBLOCK hStrBlock );
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// Function: BOOL WINAPI UpdateStringBlockA( LPCSTR strAppName, HSTRBLOCK hStrBlock,
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// int nBlockID, WORD wLangID );
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// Purpose: Update the block of string resource in the specified application
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// (ANSI version).
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// LPCTSTR strAppName: The name of the application whose string resource has to be updated.
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// HSTRBLOCK hStrBlock: The handle to the block that contains the new strings.
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// int nBlockID: The ID of the block to update in the app. If it is -1, use the same block
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// ID as that of hStrBlock.
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// WORD wLangID: The identifier of the language whaose string block has to be updated. If this
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// value is 0, use the same language as that of hStrBlock.
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// Returns: TRUE on success, FALSE on failure.
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BOOL WINAPI UpdateStringBlockA( LPCSTR strAppName, HSTRBLOCK hStrBlock, int nBlockID, WORD wLangID );
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// Function: BOOL WINAPI UpdateStringBlockW( LPCWTR strAppName, HSTRBLOCK hStrBlock,
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// int nBlockID, WORD wLangID );
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// Purpose: Update the block of string resource in the specified application
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// (UNICODE version).
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// LPCTSTR strAppName: The name of the application whose string resource has to be updated.
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// HSTRBLOCK hStrBlock: The handle to the block that contains the new strings.
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// int nBlockID: The ID of the block to update in the app. If it is -1, use the same block
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// ID as that of hStrBlock.
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// WORD wLangID: The identifier of the language whaose string block has to be updated. If this
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// value is 0, use the same language as that of hStrBlock.
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// Returns: TRUE on success, FALSE on failure.
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BOOL WINAPI UpdateStringBlockW( LPCWSTR strAppName, HSTRBLOCK hStrBlock, int nBlockID, WORD wLangID );
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// Function: STRBLOCKERR WINAPI GetStringBlockError();
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// Purpose: Get the error status of the last string block action.
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// Returns: The error status of the last operation on the specified block.
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// Comments: The error code is maintained on a per-thread basis. Multiple threads do not
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// overwrite each other's last block error code.
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STRBLOCKERR WINAPI GetStringBlockError();
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#ifdef UNICODE
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#define GetStringBlock GetStringBlockW
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#define GetString GetStringW
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#define SetString SetStringW
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#define UpdateStringBlock UpdateStringBlockW
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#else
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#define GetStringBlock GetStringBlockA
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#define GetString GetStringA
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#define SetString SetStringA
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#define UpdateStringBlock UpdateStringBlockA
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#endif // UNICODE
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14 years ago
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#endif // _STRBLOCK_H
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