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410 lines
10 KiB
410 lines
10 KiB
/** FILE: util.c *********** Module Header ********************************
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*
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* Ports applet utility library routines. This file contains string,
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* cursor, SendWinIniChange() routines.
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*
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* History:
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* 15:30 on Thur 25 Apr 1991 -by- Steve Cathcart [stevecat]
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* Took base code from Win 3.1 source
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* 10:30 on Tues 04 Feb 1992 -by- Steve Cathcart [stevecat]
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* Updated code to latest Win 3.1 sources
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* 15:30 on Thur 03 May 1994 -by- Steve Cathcart [stevecat]
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* Increased MyMessageBox buffers, Restart dialog changes
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* 17:00 on Mon 18 Sep 1995 -by- Steve Cathcart [stevecat]
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* Changes for product update - SUR release NT v4.0
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*
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* Copyright (C) 1990-1995 Microsoft Corporation
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*
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*************************************************************************/
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/* Notes -
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Global Functions:
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U T I L I T Y
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BackslashTerm () - add backslash char to path
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DoDialogBoxParam () - invoke dialog, set help context
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ErrMemDlg () - display Memory Error message box
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HourGlass () - Turn on/off hour glass cursor
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MyAtoi () - To convert from Unicode to ANSI string before calling atoi
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myatoi () - local implementation of atoi for Unicode strings
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MyItoa () - To convert from ANSI to Unicode string after calling itoa
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MyMessageBox () - display message to user, with parameters
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MyUltoa () - To convert from Unicode to ANSI string before calling ultoa
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RestartDlg () - display "Restart System" message, restart system
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SendWinIniChange () - broadcast system change message via USER
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strscan () - Find a string within another string
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StripBlanks () - Strip leading and trailing blanks from a string
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Local Functions:
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*/
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//==========================================================================
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// Include files
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//==========================================================================
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#include <nt.h> // For shutdown privilege.
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#include <ntrtl.h>
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#include <nturtl.h>
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// C Runtime
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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// Application specific
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#include "ports.h"
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#define INT_SIZE_LENGTH 20
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#define LONG_SIZE_LENGTH 40
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LPTSTR BackslashTerm( LPTSTR pszPath )
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{
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LPTSTR pszEnd;
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pszEnd = pszPath + lstrlen( pszPath );
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//
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// Get the end of the source directory
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//
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switch( *CharPrev( pszPath, pszEnd ) )
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{
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case TEXT( '\\' ):
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case TEXT( ':' ):
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break;
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default:
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*pszEnd++ = TEXT( '\\' );
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*pszEnd = TEXT( '\0' );
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}
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return( pszEnd );
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}
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//
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// This does what is necessary to bring up a dialog box
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//
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int DoDialogBoxParam( int nDlg,
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HWND hParent,
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DLGPROC lpProc,
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DWORD dwHelpContext,
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DWORD dwParam)
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{
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DWORD dwSave;
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dwSave = g_dwContext;
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g_dwContext = dwHelpContext;
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nDlg = DialogBoxParam( g_hInst, (LPTSTR) MAKEINTRESOURCE( nDlg ),
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hParent, lpProc, dwParam);
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g_dwContext = dwSave;
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if( nDlg == -1 )
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MyMessageBox( hParent, INITS, INITS+1, IDOK );
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return( nDlg );
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}
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void ErrMemDlg( HWND hParent )
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{
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MessageBox( hParent, g_szErrMem, g_szPortsApplet,
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MB_OK | MB_ICONHAND | MB_SYSTEMMODAL );
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}
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//
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// Turn hourglass on or off
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//
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void HourGlass( BOOL bOn )
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{
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if( !GetSystemMetrics( SM_MOUSEPRESENT ) )
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ShowCursor( bOn );
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SetCursor( LoadCursor( NULL, bOn ? IDC_WAIT : IDC_ARROW ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// MyAtoi
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//
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// Desc: To convert from Unicode to ANSI string before
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// calling CRT atoi and atol functions.
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//
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///////////////////////////////////////////////////////////////////////////////
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int MyAtoi( LPTSTR string )
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{
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CHAR szAnsi[ INT_SIZE_LENGTH ];
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BOOL fDefCharUsed;
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#ifdef UNICODE
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WideCharToMultiByte( CP_ACP, 0, string, INT_SIZE_LENGTH,
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szAnsi, INT_SIZE_LENGTH, NULL, &fDefCharUsed );
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return( atoi( szAnsi ) );
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#else
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return( atoi( string ) );
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#endif
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}
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int myatoi( LPTSTR pszInt )
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{
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int retval;
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TCHAR cSave;
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for( retval = 0; *pszInt; ++pszInt )
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{
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if( ( cSave = (TCHAR) ( *pszInt - TEXT( '0' ) ) ) > (TCHAR) 9 )
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break;
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retval = (int) ( retval * 10 + (int) cSave );
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}
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return( retval );
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// MyItoa
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//
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// Desc: To convert from ANSI to Unicode string after calling
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// CRT itoa function.
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//
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///////////////////////////////////////////////////////////////////////////////
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LPTSTR MyItoa( INT value, LPTSTR string, INT radix )
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{
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CHAR szAnsi[ INT_SIZE_LENGTH ];
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#ifdef UNICODE
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_itoa( value, szAnsi, radix );
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MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szAnsi, -1,
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string, INT_SIZE_LENGTH );
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#else
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_itoa( value, string, radix );
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#endif
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return( string );
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} // end of MyItoa()
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LPTSTR MyUltoa( unsigned long value, LPTSTR string, INT radix )
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{
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CHAR szAnsi[ LONG_SIZE_LENGTH ];
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#ifdef UNICODE
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_ultoa( value, szAnsi, radix );
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MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szAnsi, -1,
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string, LONG_SIZE_LENGTH );
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#else
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_ultoa( value, string, radix );
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#endif
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return( string );
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} // end of MyUltoa()
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int MyMessageBox( HWND hWnd, DWORD wText, DWORD wCaption, DWORD wType, ... )
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{
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TCHAR szText[ 4 * PATHMAX ], szCaption[ 2 * PATHMAX ];
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int ival;
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va_list parg;
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va_start( parg, wType );
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if( wText == INITS )
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goto NoMem;
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if( !LoadString( g_hInst, wText, szCaption, CharSizeOf( szCaption ) ) )
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goto NoMem;
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wvsprintf( szText, szCaption, parg );
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if( !LoadString( g_hInst, wCaption, szCaption, CharSizeOf( szCaption ) ) )
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goto NoMem;
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if( (ival = MessageBox( hWnd, szText, szCaption, wType ) ) == 0 )
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goto NoMem;
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va_end( parg );
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return( ival );
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NoMem:
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va_end( parg );
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ErrMemDlg( hWnd );
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// RestartDlg
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//
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// The following function is the dialog procedure for bringing up a system
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// restart message. This dialog is called whenever the user is advised to
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// reboot the system. The dialog contains an IDOK and IDCANCEL button, which
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// instructs the function whether to restart windows immediately.
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//
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// Parameters:
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//
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// lParam - The LOWORD portion contains an index to the resource string
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// used to compose the restart message. This string is inserted
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// before the string IDS_RESTART.
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//
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// Return Value: The usual dialog return value.
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//
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///////////////////////////////////////////////////////////////////////////////
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BOOL RestartDlg( HWND hDlg, UINT message, DWORD wParam, LONG lParam )
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{
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TCHAR szMessage[ 200 ];
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TCHAR szTemp[ 100 ];
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BOOLEAN PreviousPriv;
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switch (message)
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{
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case WM_INITDIALOG:
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//
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// Set up the restart message
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//
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LoadString( g_hInst, LOWORD(lParam), szMessage,
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CharSizeOf( szMessage ) );
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if( LoadString( g_hInst, IDS_RESTART, szTemp, CharSizeOf( szTemp ) ) )
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lstrcat( szMessage, szTemp );
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SetDlgItemText( hDlg, RESTART_TEXT, szMessage );
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break;
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case WM_COMMAND:
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switch( LOWORD( wParam ) )
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{
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case IDOK:
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RtlAdjustPrivilege( SE_SHUTDOWN_PRIVILEGE,
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TRUE, FALSE, &PreviousPriv );
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ExitWindowsEx( EWX_REBOOT | EWX_SHUTDOWN, (DWORD) (-1) );
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break;
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case IDCANCEL:
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EndDialog( hDlg, 0L );
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break;
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default:
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return( FALSE );
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}
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return( TRUE );
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default:
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return( FALSE );
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}
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return( FALSE );
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}
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void SendWinIniChange( LPTSTR lpSection )
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{
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// NOTE: We have (are) gone through several iterations of which USER
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// api is the correct one to use. The main problem for the Control
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// Panel is to avoid being HUNG if another app (top-level window)
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// is HUNG. Another problem is that we pass a pointer to a message
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// string in our address space. SendMessage will 'thunk' this properly
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// for each window, but PostMessage and SendNotifyMessage will not.
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// That finally brings us to try to use SendMessageTimeout(). 9/21/92
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//
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// Try SendNotifyMessage in build 260 or later - kills earlier builds
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// SendNotifyMessage ((HWND)-1, WM_WININICHANGE, 0L, (LONG)lpSection);
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// PostMessage ((HWND)-1, WM_WININICHANGE, 0L, (LONG)lpSection);
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// [stevecat] 4/4/92
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//
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// SendMessage ((HWND)-1, WM_WININICHANGE, 0L, (LPARAM)lpSection);
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//
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// NOTE: The final parameter (LPDWORD lpdwResult) must be NULL
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SendMessageTimeout( (HWND)-1, WM_WININICHANGE, 0L, (LONG)lpSection,
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SMTO_ABORTIFHUNG, 1000, NULL );
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}
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LPTSTR strscan( LPTSTR pszString, LPTSTR pszTarget )
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{
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LPTSTR psz;
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if( psz = _tcsstr( pszString, pszTarget ) )
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return( psz );
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else
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return( pszString + lstrlen( pszString ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// StripBlanks()
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//
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// Strips leading and trailing blanks from a string.
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// Alters the memory where the string sits.
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//
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///////////////////////////////////////////////////////////////////////////////
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void StripBlanks( LPTSTR pszString )
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{
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LPTSTR pszPosn;
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//
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// strip leading blanks
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//
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pszPosn = pszString;
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while( *pszPosn == TEXT( ' ' ) )
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pszPosn++;
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if( pszPosn != pszString );
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lstrcpy( pszString, pszPosn );
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//
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// strip trailing blanks
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//
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if( ( pszPosn = pszString + lstrlen( pszString ) ) != pszString )
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{
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pszPosn = CharPrev( pszString, pszPosn );
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while( *pszPosn == TEXT( ' ' ) )
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pszPosn = CharPrev( pszString, pszPosn );
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pszPosn = CharNext( pszPosn );
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*pszPosn = TEXT( '\0' );
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}
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}
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