4 * ---------------------------------------------------------------------------
6 * Implementation of a minimal C++ class framework for use with the
7 * Microsoft Windows Application Programming Interface.
11 * This file provides the implementation of the constructor for the
12 * StringResource class.
14 * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
15 * Copyright (C) 2012, MinGW.org Project.
17 * ---------------------------------------------------------------------------
19 * Permission is hereby granted, free of charge, to any person obtaining a
20 * copy of this software and associated documentation files (the "Software"),
21 * to deal in the Software without restriction, including without limitation
22 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
23 * and/or sell copies of the Software, and to permit persons to whom the
24 * Software is furnished to do so, subject to the following conditions:
26 * The above copyright notice and this permission notice shall be included
27 * in all copies or substantial portions of the Software.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
30 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
32 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
33 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
34 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
35 * DEALINGS IN THE SOFTWARE.
37 * ---------------------------------------------------------------------------
40 #define WIN32_LEAN_AND_MEAN
46 /* MSDN says that the maximum length of any one string resource
47 * is 4097 characters; it isn't clear if this limit includes the
48 * terminating NUL, so we'll assume we may need one more.
50 #define WTK_STRING_RESOURCE_MAX 4098
52 WTK::StringResource::StringResource( HINSTANCE inst, unsigned int id )
54 /* First, allocate a temporary buffer, of sufficient size to
55 * accommodate a copy of the longest possible string resource.
57 char *tmp; value = NULL;
58 if( (tmp = (char *)(malloc( WTK_STRING_RESOURCE_MAX ))) == NULL )
59 throw( runtime_error( "Insufficient memory" ) );
61 /* Attempt to load the specified resource into this buffer...
63 if( ! LoadString( inst, id, tmp, WTK_STRING_RESOURCE_MAX ) )
65 /* ...but if that fails, release the temporary buffer
66 * to avoid leaking memory...
68 free( (void *)(tmp) );
70 /* ...and bail out, with a suitable diagnostic message.
72 throw( runtime_error( error_text( "String resource #%u not found", id )) );
75 /* Having successfully loaded the resource, adjust the memory
76 * allocation to fit, without wastage...
78 if( (value = (char *)(realloc( tmp, 1 + strlen( tmp ) ))) == NULL )
80 * ...making the temporary buffer reference permanent, in
81 * the event that the reallocation should fail.
86 /* $RCSfile$: end of file */