query.c

Windows CE 6.0 BSP for VOIPAC Board (PXA270) Version 2b.

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
// -----------------------------------------------------------------------------
//
//      THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//      ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//      THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//      PARTICULAR PURPOSE.
//  
// -----------------------------------------------------------------------------
#include <windows.h>
#include <x86boot.h>
#include <kitl.h>
#include <oal_nkxp.h>

BOOL x86IoCtlQueryDispSettings (
    UINT32 code, VOID *lpInBuf, UINT32 nInBufSize, VOID *lpOutBuf, 
    UINT32 nOutBufSize, UINT32 *lpBytesReturned
) {
    DWORD dwErr = 0;

    if (lpBytesReturned) {
        *lpBytesReturned = 0;
    }

    if (!lpOutBuf) {
        dwErr = ERROR_INVALID_PARAMETER;
    } else if (sizeof(DWORD)*3 > nOutBufSize) {
        dwErr = ERROR_INSUFFICIENT_BUFFER;
    } else {
        // Check the boot arg structure for the default display settings.
        __try {

            ((PDWORD)lpOutBuf)[0] = (DWORD)g_pX86Info->cxDisplayScreen;
            ((PDWORD)lpOutBuf)[1] = (DWORD)g_pX86Info->cyDisplayScreen;
            ((PDWORD)lpOutBuf)[2] = (DWORD)g_pX86Info->bppScreen;

            if (lpBytesReturned) {
                *lpBytesReturned = sizeof (DWORD) * 3;
            }

        } __except (EXCEPTION_EXECUTE_HANDLER) {
            dwErr = ERROR_INVALID_PARAMETER;
        }
    }

    if (dwErr) {
        NKSetLastError (dwErr);
    }

    return !dwErr;
}