526 lines
13 KiB
C
526 lines
13 KiB
C
/*
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* OLE2DISP library
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*
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* Copyright 1995 Martin von Loewis
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <string.h>
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#include "wine/windef16.h"
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#include "ole2.h"
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#include "oleauto.h"
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "ole2disp.h"
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#include "olectl.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ole);
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/* This implementation of the BSTR API is 16-bit only. It
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represents BSTR as a 16:16 far pointer, and the strings
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as ISO-8859 */
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/******************************************************************************
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* BSTR_AllocBytes [Internal]
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*/
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static BSTR16 BSTR_AllocBytes(int n)
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{
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void *ptr = HeapAlloc( GetProcessHeap(), 0, n );
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return (BSTR16)MapLS(ptr);
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}
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/******************************************************************************
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* BSTR_Free [INTERNAL]
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*/
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static void BSTR_Free(BSTR16 in)
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{
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void *ptr = MapSL( (SEGPTR)in );
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UnMapLS( (SEGPTR)in );
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HeapFree( GetProcessHeap(), 0, ptr );
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}
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/******************************************************************************
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* BSTR_GetAddr [INTERNAL]
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*/
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static void* BSTR_GetAddr(BSTR16 in)
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{
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return in ? MapSL((SEGPTR)in) : 0;
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}
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/******************************************************************************
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* SysAllocString [OLE2DISP.2]
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*/
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BSTR16 WINAPI SysAllocString16(LPCOLESTR16 in)
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{
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BSTR16 out;
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if (!in) return 0;
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out = BSTR_AllocBytes(strlen(in)+1);
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if (!out) return 0;
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strcpy(BSTR_GetAddr(out),in);
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return out;
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}
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/******************************************************************************
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* SysAllocString [OLEAUT32.2]
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*
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* MSDN (October 2001) states that this returns a NULL value if the argument
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* is a zero-length string. This does not appear to be true; certainly it
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* returns a value under Win98 (Oleaut32.dll Ver 2.40.4515.0)
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*/
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BSTR WINAPI SysAllocString(LPCOLESTR in)
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{
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if (!in) return 0;
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/* Delegate this to the SysAllocStringLen32 method. */
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return SysAllocStringLen(in, lstrlenW(in));
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}
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/******************************************************************************
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* SysReallocString [OLE2DISP.3]
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*/
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INT16 WINAPI SysReAllocString16(LPBSTR16 old,LPCOLESTR16 in)
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{
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BSTR16 new=SysAllocString16(in);
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BSTR_Free(*old);
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*old=new;
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return 1;
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}
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/******************************************************************************
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* SysReAllocString [OLEAUT32.3]
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*/
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INT WINAPI SysReAllocString(LPBSTR old,LPCOLESTR in)
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{
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/*
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* Sanity check
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*/
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if (old==NULL)
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return 0;
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/*
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* Make sure we free the old string.
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*/
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if (*old!=NULL)
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SysFreeString(*old);
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/*
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* Allocate the new string
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*/
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*old = SysAllocString(in);
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return 1;
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}
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/******************************************************************************
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* SysAllocStringLen [OLE2DISP.4]
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*/
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BSTR16 WINAPI SysAllocStringLen16(const char *in, int len)
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{
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BSTR16 out=BSTR_AllocBytes(len+1);
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if (!out)
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return 0;
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/*
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* Copy the information in the buffer.
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* Since it is valid to pass a NULL pointer here, we'll initialize the
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* buffer to nul if it is the case.
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*/
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if (in != 0)
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strcpy(BSTR_GetAddr(out),in);
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else
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memset(BSTR_GetAddr(out), 0, len+1);
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return out;
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}
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/******************************************************************************
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* SysAllocStringLen [OLEAUT32.4]
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*
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* In "Inside OLE, second edition" by Kraig Brockshmidt. In the Automation
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* section, he describes the DWORD value placed *before* the BSTR data type.
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* he describes it as a "DWORD count of characters". By experimenting with
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* a windows application, this count seems to be a DWORD count of bytes in
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* the string. Meaning that the count is double the number of wide
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* characters in the string.
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*/
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BSTR WINAPI SysAllocStringLen(const OLECHAR *in, unsigned int len)
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{
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DWORD bufferSize;
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DWORD* newBuffer;
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WCHAR* stringBuffer;
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/*
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* Find the length of the buffer passed-in in bytes.
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*/
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bufferSize = len * sizeof (WCHAR);
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/*
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* Allocate a new buffer to hold the string.
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* dont't forget to keep an empty spot at the beginning of the
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* buffer for the character count and an extra character at the
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* end for the NULL.
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*/
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newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
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0,
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bufferSize + sizeof(WCHAR) + sizeof(DWORD));
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/*
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* If the memory allocation failed, return a null pointer.
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*/
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if (newBuffer==0)
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return 0;
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/*
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* Copy the length of the string in the placeholder.
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*/
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*newBuffer = bufferSize;
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/*
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* Skip the byte count.
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*/
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newBuffer++;
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/*
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* Copy the information in the buffer.
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* Since it is valid to pass a NULL pointer here, we'll initialize the
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* buffer to nul if it is the case.
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*/
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if (in != 0)
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memcpy(newBuffer, in, bufferSize);
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else
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memset(newBuffer, 0, bufferSize);
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/*
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* Make sure that there is a nul character at the end of the
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* string.
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*/
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stringBuffer = (WCHAR*)newBuffer;
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stringBuffer[len] = L'\0';
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return (LPWSTR)stringBuffer;
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}
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/******************************************************************************
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* SysReAllocStringLen [OLE2DISP.5]
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*/
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int WINAPI SysReAllocStringLen16(BSTR16 *old,const char *in,int len)
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{
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BSTR16 new=SysAllocStringLen16(in,len);
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BSTR_Free(*old);
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*old=new;
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return 1;
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}
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/******************************************************************************
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* SysReAllocStringLen [OLEAUT32.5]
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*/
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int WINAPI SysReAllocStringLen(BSTR* old, const OLECHAR* in, unsigned int len)
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{
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/*
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* Sanity check
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*/
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if (old==NULL)
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return 0;
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/*
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* Make sure we free the old string.
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*/
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if (*old!=NULL)
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SysFreeString(*old);
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/*
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* Allocate the new string
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*/
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*old = SysAllocStringLen(in, len);
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return 1;
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}
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/******************************************************************************
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* SysFreeString [OLE2DISP.6]
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*/
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void WINAPI SysFreeString16(BSTR16 in)
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{
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BSTR_Free(in);
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}
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/******************************************************************************
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* SysFreeString [OLEAUT32.6]
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*/
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void WINAPI SysFreeString(BSTR in)
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{
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DWORD* bufferPointer;
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/* NULL is a valid parameter */
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if(!in) return;
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/*
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* We have to be careful when we free a BSTR pointer, it points to
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* the beginning of the string but it skips the byte count contained
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* before the string.
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*/
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bufferPointer = (DWORD*)in;
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bufferPointer--;
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/*
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* Free the memory from its "real" origin.
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*/
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HeapFree(GetProcessHeap(), 0, bufferPointer);
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}
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/******************************************************************************
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* SysStringLen [OLE2DISP.7]
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*/
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int WINAPI SysStringLen16(BSTR16 str)
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{
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return strlen(BSTR_GetAddr(str));
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}
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/******************************************************************************
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* SysStringLen [OLEAUT32.7]
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*
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* The Windows documentation states that the length returned by this function
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* is not necessarely the same as the length returned by the _lstrlenW method.
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* It is the same number that was passed in as the "len" parameter if the
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* string was allocated with a SysAllocStringLen method call.
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*/
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int WINAPI SysStringLen(BSTR str)
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{
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DWORD* bufferPointer;
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if (!str) return 0;
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/*
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* The length of the string (in bytes) is contained in a DWORD placed
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* just before the BSTR pointer
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*/
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bufferPointer = (DWORD*)str;
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bufferPointer--;
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return (int)(*bufferPointer/sizeof(WCHAR));
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}
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/******************************************************************************
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* SysStringByteLen [OLEAUT32.149]
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*
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* The Windows documentation states that the length returned by this function
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* is not necessarely the same as the length returned by the _lstrlenW method.
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* It is the same number that was passed in as the "len" parameter if the
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* string was allocated with a SysAllocStringLen method call.
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*/
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int WINAPI SysStringByteLen(BSTR str)
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{
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DWORD* bufferPointer;
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if (!str) return 0;
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/*
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* The length of the string (in bytes) is contained in a DWORD placed
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* just before the BSTR pointer
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*/
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bufferPointer = (DWORD*)str;
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bufferPointer--;
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return (int)(*bufferPointer);
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}
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/******************************************************************************
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* CreateDispTypeInfo [OLE2DISP.31]
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*/
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HRESULT WINAPI CreateDispTypeInfo16(
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INTERFACEDATA *pidata,
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LCID lcid,
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ITypeInfo **pptinfo)
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{
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FIXME("(%p,%ld,%p),stub\n",pidata,lcid,pptinfo);
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return E_NOTIMPL;
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}
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/******************************************************************************
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* CreateStdDispatch [OLE2DISP.32]
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*/
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HRESULT WINAPI CreateStdDispatch16(
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IUnknown* punkOuter,
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void* pvThis,
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ITypeInfo* ptinfo,
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IUnknown** ppunkStdDisp)
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{
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FIXME("(%p,%p,%p,%p),stub\n",punkOuter, pvThis, ptinfo,
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ppunkStdDisp);
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return E_NOTIMPL;
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}
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/******************************************************************************
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* RegisterActiveObject [OLE2DISP.35]
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*/
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HRESULT WINAPI RegisterActiveObject16(
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IUnknown *punk, REFCLSID rclsid, DWORD dwFlags, unsigned long *pdwRegister
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) {
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FIXME("(%p,%s,0x%08lx,%p):stub\n",punk,debugstr_guid(rclsid),dwFlags,pdwRegister);
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return E_NOTIMPL;
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}
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/******************************************************************************
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* OleTranslateColor [OLEAUT32.421]
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*
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* Converts an OLE_COLOR to a COLORREF.
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* See the documentation for conversion rules.
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* pColorRef can be NULL. In that case the user only wants to test the
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* conversion.
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*/
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HRESULT WINAPI OleTranslateColor(
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OLE_COLOR clr,
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HPALETTE hpal,
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COLORREF* pColorRef)
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{
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COLORREF colorref;
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BYTE b = HIBYTE(HIWORD(clr));
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TRACE("(%08lx, %d, %p):stub\n", clr, hpal, pColorRef);
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/*
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* In case pColorRef is NULL, provide our own to simplify the code.
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*/
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if (pColorRef == NULL)
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pColorRef = &colorref;
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switch (b)
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{
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case 0x00:
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{
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if (hpal != 0)
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*pColorRef = PALETTERGB(GetRValue(clr),
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GetGValue(clr),
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GetBValue(clr));
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else
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*pColorRef = clr;
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break;
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}
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case 0x01:
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{
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if (hpal != 0)
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{
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PALETTEENTRY pe;
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/*
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* Validate the palette index.
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*/
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if (GetPaletteEntries(hpal, LOWORD(clr), 1, &pe) == 0)
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return E_INVALIDARG;
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}
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*pColorRef = clr;
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break;
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}
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case 0x02:
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*pColorRef = clr;
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break;
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case 0x80:
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{
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int index = LOBYTE(LOWORD(clr));
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/*
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* Validate GetSysColor index.
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*/
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if ((index < COLOR_SCROLLBAR) || (index > COLOR_GRADIENTINACTIVECAPTION))
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return E_INVALIDARG;
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*pColorRef = GetSysColor(index);
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break;
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}
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default:
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return E_INVALIDARG;
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}
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return S_OK;
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}
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/******************************************************************************
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* SysAllocStringByteLen [OLEAUT32.150]
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*
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*/
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BSTR WINAPI SysAllocStringByteLen(LPCSTR in, UINT len)
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{
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DWORD* newBuffer;
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char* stringBuffer;
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/*
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* Allocate a new buffer to hold the string.
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* dont't forget to keep an empty spot at the beginning of the
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* buffer for the character count and an extra character at the
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* end for the NULL.
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*/
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newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
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0,
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len + sizeof(WCHAR) + sizeof(DWORD));
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/*
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* If the memory allocation failed, return a null pointer.
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*/
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if (newBuffer==0)
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return 0;
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/*
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* Copy the length of the string in the placeholder.
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*/
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*newBuffer = len;
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/*
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* Skip the byte count.
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*/
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newBuffer++;
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/*
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* Copy the information in the buffer.
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* Since it is valid to pass a NULL pointer here, we'll initialize the
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* buffer to nul if it is the case.
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*/
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if (in != 0)
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memcpy(newBuffer, in, len);
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/*
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* Make sure that there is a nul character at the end of the
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* string.
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*/
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stringBuffer = (char *)newBuffer;
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stringBuffer[len] = 0;
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stringBuffer[len+1] = 0;
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return (LPWSTR)stringBuffer;
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}
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