297 lines
7 KiB
C++
297 lines
7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1999 Microsoft Corporation
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//
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// Module Name:
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// DDxDDv.cpp
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//
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// Description:
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// Implementation of custom dialog data exchange/dialog data validation
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// routines.
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//
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// Author:
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// David Potter (DavidP) March 24, 1999
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//
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// Revision History:
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//
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// Notes:
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// The IDS_REQUIRED_FIELD_EMPTY string resource must be defined in
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// the resource file.
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//
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/////////////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "DDxDDv.h"
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#include "resource.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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/////////////////////////////////////////////////////////////////////////////
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//++
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//
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// DDX_Number
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//
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// Description:
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// Do data exchange between the dialog and the class.
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//
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// Arguments:
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// pDX [IN OUT] Data exchange object
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// nIDC [IN] Control ID.
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// dwValue [IN OUT] Value to set or get.
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// dwMin [IN] Minimum value.
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// dwMax [IN] Maximum value.
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// bSigned [IN] TRUE = value is signed, FALSE = value is unsigned
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//
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// Return Value:
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// None.
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//
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//--
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/////////////////////////////////////////////////////////////////////////////
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void AFXAPI DDX_Number(
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IN OUT CDataExchange * pDX,
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IN int nIDC,
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IN OUT DWORD & rdwValue,
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IN DWORD dwMin,
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IN DWORD dwMax,
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IN BOOL bSigned
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)
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{
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HWND hwndCtrl;
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DWORD dwValue;
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ASSERT( pDX != NULL );
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#ifdef _DEBUG
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if ( bSigned )
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{
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ASSERT( static_cast< LONG >( dwMin ) < static_cast< LONG >( dwMax ) );
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}
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else
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{
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ASSERT( dwMin < dwMax );
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}
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#endif // _DEBUG
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AFX_MANAGE_STATE( AfxGetStaticModuleState() );
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// Get the control window handle.
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hwndCtrl = pDX->PrepareEditCtrl( nIDC );
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if ( pDX->m_bSaveAndValidate )
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{
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BOOL bTranslated;
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// Get the number from the control.
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dwValue = GetDlgItemInt( pDX->m_pDlgWnd->m_hWnd, nIDC, &bTranslated, bSigned );
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// If the retrival failed, it is a signed number, and the minimum
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// value is the smallest negative value possible, check the string itself.
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if ( ! bTranslated && bSigned && (dwMin == 0x80000000) )
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{
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UINT cch;
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TCHAR szNumber[ 20 ];
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// See if it is the smallest negative number.
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cch = GetDlgItemText( pDX->m_pDlgWnd->m_hWnd, nIDC, szNumber, sizeof( szNumber ) / sizeof( TCHAR ) );
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if ( (cch != 0) && (lstrcmp( szNumber, _T("-2147483648") ) == 0) )
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{
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dwValue = 0x80000000;
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bTranslated = TRUE;
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} // if: text retrieved successfully and is highest negative number
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} // if: error translating number and getting signed number
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// If the retrieval failed or the specified number is
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// out of range, display an error.
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if ( ! bTranslated
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|| (bSigned
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&& ( (static_cast< LONG >( dwValue ) < static_cast< LONG >( dwMin ))
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|| (static_cast< LONG >( dwValue ) > static_cast< LONG >( dwMax ))
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)
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)
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|| (! bSigned
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&& ( (dwValue < dwMin)
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|| (dwValue > dwMax)
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)
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)
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)
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{
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TCHAR szMin[ 32 ];
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TCHAR szMax[ 32 ];
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CString strPrompt;
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if ( bSigned )
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{
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wsprintf( szMin, _T("%d%"), dwMin );
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wsprintf( szMax, _T("%d%"), dwMax );
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} // if: signed number
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else
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{
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wsprintf( szMin, _T("%u%"), dwMin );
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wsprintf( szMax, _T("%u%"), dwMax );
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} // else: unsigned number
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AfxFormatString2( strPrompt, AFX_IDP_PARSE_INT_RANGE, szMin, szMax );
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AfxMessageBox( strPrompt, MB_ICONEXCLAMATION, AFX_IDP_PARSE_INT_RANGE );
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strPrompt.Empty(); // exception prep
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pDX->Fail();
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} // if: invalid string
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else
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{
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rdwValue = dwValue;
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} // if: number is in range
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} // if: saving data
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else
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{
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CString strMinValue;
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CString strMaxValue;
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UINT cchMax;
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// Set the maximum number of characters that can be entered.
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if ( bSigned )
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{
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strMinValue.Format( _T("%d"), dwMin );
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strMaxValue.Format( _T("%d"), dwMax );
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} // if: signed value
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else
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{
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strMinValue.Format( _T("%u"), dwMin );
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strMaxValue.Format( _T("%u"), dwMax );
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} // else: unsigned value
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cchMax = max( strMinValue.GetLength(), strMaxValue.GetLength() );
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SendMessage( hwndCtrl, EM_LIMITTEXT, cchMax, 0 );
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// Set the value into the control.
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if ( bSigned )
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{
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LONG lValue = static_cast< LONG >( rdwValue );
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DDX_Text( pDX, nIDC, lValue );
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} // if: signed value
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else
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DDX_Text( pDX, nIDC, rdwValue );
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} // else: setting data onto the dialog
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} //*** DDX_Number()
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/////////////////////////////////////////////////////////////////////////////
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//++
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//
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// DDV_RequiredText
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//
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// Description:
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// Validate that the dialog string is present.
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//
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// Arguments:
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// pDX [IN OUT] Data exchange object
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// nIDC [IN] Control ID.
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// nIDCLabel [IN] Label control ID.
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// rstrValue [IN] Value to set or get.
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//
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// Return Value:
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// None.
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//
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//--
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/////////////////////////////////////////////////////////////////////////////
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void AFXAPI DDV_RequiredText(
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IN OUT CDataExchange * pDX,
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IN int nIDC,
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IN int nIDCLabel,
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IN const CString & rstrValue
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)
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{
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ASSERT( pDX != NULL );
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AFX_MANAGE_STATE( AfxGetStaticModuleState() );
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if ( pDX->m_bSaveAndValidate )
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{
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if ( rstrValue.GetLength() == 0 )
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{
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HWND hwndLabel;
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TCHAR szLabel[ 1024 ];
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CString strPrompt;
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// Get the label window handle
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hwndLabel = pDX->PrepareEditCtrl( nIDCLabel );
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// Get the text of the label.
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GetWindowText( hwndLabel, szLabel, sizeof( szLabel ) / sizeof( TCHAR ) );
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// Remove ampersands (&) and colons (:).
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CleanupLabel( szLabel );
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// Format and display a message.
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strPrompt.FormatMessage( IDS_REQUIRED_FIELD_EMPTY, szLabel );
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AfxMessageBox( strPrompt, MB_ICONEXCLAMATION );
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// Do this so that the control receives focus.
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(void) pDX->PrepareEditCtrl( nIDC );
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// Fail the call.
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strPrompt.Empty(); // exception prep
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pDX->Fail();
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} // if: field not specified
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} // if: saving data
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} //*** DDV_RequiredText()
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/////////////////////////////////////////////////////////////////////////////
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//++
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//
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// CleanupLabel
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//
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// Description:
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// Prepare a label read from a dialog to be used as a string in a
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// message by removing ampersands (&) and colons (:).
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//
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// Arguments:
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// pszLabel [IN OUT] Label to be cleaned up.
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//
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// Return Value:
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// None.
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//
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//--
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/////////////////////////////////////////////////////////////////////////////
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void CleanupLabel( LPTSTR pszLabel )
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{
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LPTSTR pIn, pOut;
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LANGID langid;
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WORD primarylangid;
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BOOL bFELanguage;
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// Get the language ID.
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langid = GetUserDefaultLangID();
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primarylangid = static_cast< WORD >( PRIMARYLANGID( langid ) );
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bFELanguage = ((primarylangid == LANG_JAPANESE)
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|| (primarylangid == LANG_CHINESE)
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|| (primarylangid == LANG_KOREAN) );
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//
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// Copy the name sans '&' and ':' chars
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//
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pIn = pOut = pszLabel;
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do
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{
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//
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// Strip FE accelerators with parentheses. e.g. "foo(&F)" -> "foo"
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//
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if ( bFELanguage
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&& (pIn[ 0 ] == _T('('))
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&& (pIn[ 1 ] == _T('&'))
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&& (pIn[ 2 ] != _T('\0'))
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&& (pIn[ 3 ] == _T(')')) )
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{
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pIn += 3;
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} // if: Far East language with accelerator
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else if ( (*pIn != _T('&')) && (*pIn != _T(':')) )
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{
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*pOut++ = *pIn;
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} // else if: accelerator found
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} while ( *pIn++ != _T('\0') );
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} //*** CleanupLabel()
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