error.c

/*
 * Regedit errors, warnings, informations displaying
 *
 * Copyright (C) 2010 Adam Kachwalla <geekdundee@gmail.com>
 * Copyright (C) 2012 Hermès Bélusca - Maïto <hermes.belusca@sfr.fr>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "regedit.h"

int ErrorMessageBox(HWND hWnd, LPCWSTR lpTitle, DWORD dwErrorCode, ...)
{
    int iRet = 0;
    LPWSTR lpMsgBuf = NULL;
    DWORD Status = 0;
    va_list args;

    va_start(args, dwErrorCode);

    Status = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
                            NULL,
                            dwErrorCode,
                            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                            (LPWSTR)&lpMsgBuf,
                            0,
                            &args);

    va_end(args);

    iRet = MessageBoxW(hWnd, (Status && lpMsgBuf ? lpMsgBuf : L"Error displaying error message."), lpTitle, MB_OK | MB_ICONERROR);

    if (lpMsgBuf) LocalFree(lpMsgBuf);

    /* Return the MessageBoxW information */
    return iRet;
}

int InfoMessageBox(HWND hWnd, UINT uType, LPCWSTR lpTitle, LPCWSTR lpMessage, ...)
{
    int iRet = 0;
    LPWSTR lpMsgBuf = NULL;
    va_list args;

    va_start(args, lpMessage);

    if (lpMessage)
    {
        SIZE_T strLen = _vscwprintf(lpMessage, args);

        /* Create a buffer on the heap and zero it out (LPTR) */
        lpMsgBuf = (LPWSTR)LocalAlloc(LPTR, (strLen + 1) * sizeof(WCHAR));
        if (lpMsgBuf)
        {
            _vsnwprintf(lpMsgBuf, strLen, lpMessage, args);
        }
    }

    va_end(args);

    iRet = MessageBoxW(hWnd, (lpMessage && lpMsgBuf ? lpMsgBuf : L"Error displaying info message."), lpTitle, uType);

    if (lpMsgBuf) LocalFree(lpMsgBuf);

    /* Return the MessageBoxW information */
    return iRet;
}