added functions to load localized resources

Makefile.in

@@ -18,9 +18,9 @@ CFLAGS += -W -Wall -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wbad-function
 
 OBJS = main.o tray.o openvpn.o openvpn_monitor_process.o viewlog.o \
        service.o options.o passphrase.o proxy.o ieproxy.o registry.o \
-       openvpn_config.o scripts.o openvpn-gui-res.o
+       openvpn_config.o scripts.o localization.o openvpn-gui-res.o
 
-SOURCES = main.c main.h openvpn.c openvpn.h \
+SOURCES = main.c main.h openvpn.c openvpn.h localization.c localization.h \
           openvpn_monitor_process.c openvpn_monitor_process.h \
           tray.c tray.h viewlog.c viewlog.h service.c service.h \
           options.c options.h passphrase.c passphrase.h proxy.c proxy.h \

localization.c

@@ -0,0 +1,122 @@
+/*
+ *  OpenVPN-GUI -- A Windows GUI for OpenVPN.
+ *
+ *  Copyright (C) 2009 Heiko Hund <heikoh@users.sf.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <windows.h>
+#include <tchar.h>
+
+static const LANGID defaultLangId = MAKELANGID(LANG_ENGLISH, SUBLANG_NEUTRAL);
+
+static HRSRC
+FindLangResource(HINSTANCE instance, PTSTR resType, PTSTR resId, LANGID langId)
+{
+    HRSRC res;
+
+    /* try to find the resource in requested language */
+    res = FindResourceEx(instance, resType, resId, langId);
+    if (res)
+        return res;
+
+    /* try to find the resource in the default language */
+    res = FindResourceEx(instance, resType, resId, defaultLangId);
+    if (res)
+        return res;
+
+    /* try to find the resource in any language */
+    return FindResource(instance, resId, resType);
+}
+
+
+int
+LoadLangString(HINSTANCE instance, UINT stringId, LANGID langId, PTSTR buffer, int bufferSize)
+{
+    PWCH entry;
+    PTSTR resBlockId = MAKEINTRESOURCE(stringId / 16 + 1);
+    int resIndex = stringId & 15;
+
+    /* find resource block for string */
+    HRSRC res = FindLangResource(instance, RT_STRING, resBlockId, langId);
+    if (res == NULL)
+        return 0;
+
+    /* get pointer to first entry in resource block */
+    entry = (PWCH) LoadResource(instance, res);
+    if (entry == NULL)
+        return 0;
+
+    /* search for string in block */
+    for (int i = 0; i < 16; i++)
+    {
+        /* string found, copy it */
+        if (i == resIndex && *entry)
+        {
+            int maxLen = (*entry < bufferSize ? *entry : bufferSize);
+#ifdef _UNICODE
+            wcsncpy(buffer, entry + 1, maxLen);
+#else
+            WideCharToMultiByte(CP_ACP, 0, entry + 1, *entry, buffer, maxLen, "?", NULL);
+#endif
+            buffer[bufferSize - 1] = 0;
+            return _tcslen(buffer);
+        }
+
+        /* string does not exist */
+        if (i == resIndex)
+            break;
+
+        /* skip over this entry */
+        entry += ((*entry) + 1);
+    }
+
+    return 0;
+}
+
+
+HICON
+LoadLangIcon(HINSTANCE instance, PTSTR iconId, LANGID langId)
+{
+    /* find group icon resource */
+    HRSRC res = FindLangResource(instance, RT_GROUP_ICON, iconId, langId);
+    if (res == NULL)
+        return NULL;
+
+    HGLOBAL resInfo = LoadResource(instance, res);
+    if (resInfo == NULL)
+        return NULL;
+
+    int id = LookupIconIdFromDirectory(resInfo, TRUE);
+    if (id == 0)
+        return NULL;
+
+    /* find the actual icon */
+    res = FindLangResource(instance, RT_ICON, MAKEINTRESOURCE(id), langId);
+    if (res == NULL)
+        return NULL;
+
+    resInfo = LoadResource(instance, res);
+    if (resInfo == NULL)
+        return NULL;
+
+    DWORD resSize = SizeofResource(instance, res);
+    if (resSize == 0)
+        return NULL;
+
+    return CreateIconFromResource(resInfo, resSize, TRUE, 0x30000);
+}

localization.h

@@ -0,0 +1,23 @@
+/*
+ *  OpenVPN-GUI -- A Windows GUI for OpenVPN.
+ *
+ *  Copyright (C) 2009 Heiko Hund <heikoh@users.sf.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+int LoadLangString(HINSTANCE, UINT, LANGID, PTSTR, int);
+HICON LoadLangIcon(HINSTANCE, PTSTR, LANGID);