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OLEDBDepartmentMFCView.cpp
资源名称：vc++6.0数据库编程大全（代码）.rar　[点击查看]
上传用户：benben_wyd
上传日期：2010-02-26
资源大小：1229k
文件大小：4k
源码类别：

书籍源码

开发平台：

Visual C++

OLEDBDepartmentMFCView.cpp：源码内容
  1. // OLEDBDepartmentMFCView.cpp : implementation of the COLEDBDepartmentMFCView class
  2. //
  4. #include "stdafx.h"
  5. #include "OLEDBDepartmentMFC.h"
  7. #include "OLEDBDepartmentMFCSet.h"
  8. #include "OLEDBDepartmentMFCDoc.h"
  9. #include "OLEDBDepartmentMFCView.h"
  11. #ifdef _DEBUG
  12. #define new DEBUG_NEW
  13. #undef THIS_FILE
  14. static char THIS_FILE[] = __FILE__;
  15. #endif
  17. //Added by Chuck Wood for error checking
  18. #include "..OLEDBErrorCheckingOLEDBErrorChecking.h"
  20. /////////////////////////////////////////////////////////////////////////////
  21. // COLEDBDepartmentMFCView
  23. IMPLEMENT_DYNCREATE(COLEDBDepartmentMFCView, COleDBRecordView)
  25. BEGIN_MESSAGE_MAP(COLEDBDepartmentMFCView, COleDBRecordView)
  26. //{{AFX_MSG_MAP(COLEDBDepartmentMFCView)
  27. ON_EN_CHANGE(IDC_DEPARTMENTCODE, OnChangeDepartmentcode)
  28. ON_EN_CHANGE(IDC_DEPARTMENTNAME, OnChangeDepartmentname)
  29. ON_COMMAND(ID_FILE_SAVE, OnFileSave)
  30. ON_WM_DESTROY()
  31. //}}AFX_MSG_MAP
  32. END_MESSAGE_MAP()
  34. /////////////////////////////////////////////////////////////////////////////
  35. // COLEDBDepartmentMFCView construction/destruction
  37. COLEDBDepartmentMFCView::COLEDBDepartmentMFCView()
  38. : COleDBRecordView(COLEDBDepartmentMFCView::IDD)
  39. {
  40. //{{AFX_DATA_INIT(COLEDBDepartmentMFCView)
  41. // NOTE: the ClassWizard will add member initialization here
  42. m_pSet = NULL;
  43. //}}AFX_DATA_INIT
  44. m_bChangesMade = FALSE;
  45. }
  47. COLEDBDepartmentMFCView::~COLEDBDepartmentMFCView()
  48. {
  49. }
  51. void COLEDBDepartmentMFCView::DoDataExchange(CDataExchange* pDX)
  52. {
  53. COleDBRecordView::DoDataExchange(pDX);
  54. //{{AFX_DATA_MAP(COLEDBDepartmentMFCView)
  55. // NOTE: the ClassWizard will add DDX and DDV calls here
  56. //}}AFX_DATA_MAP
  57. //Added by Chuck Wood for the data exchange
  58.     DDX_Text(pDX, IDC_DEPARTMENTCODE, m_pSet->m_DepartmentCode, 5);
  59.     DDV_MaxChars(pDX, m_pSet->m_DepartmentCode, 4);
  60.     DDX_Text(pDX, IDC_DEPARTMENTNAME, m_pSet->m_DepartmentName, 51);
  61.     DDV_MaxChars(pDX, m_pSet->m_DepartmentName, 50);
  62. }
  64. BOOL COLEDBDepartmentMFCView::PreCreateWindow(CREATESTRUCT& cs)
  65. {
  66. return COleDBRecordView::PreCreateWindow(cs);
  67. }
  69. void COLEDBDepartmentMFCView::OnInitialUpdate()
  70. {
  71. m_pSet = &GetDocument()->m_oLEDBDepartmentMFCSet;
  72. {
  73. CWaitCursor wait;
  74. HRESULT hr = m_pSet->Open();
  75. if (hr != S_OK)
  76. {
  77. AfxMessageBox(_T("Record set failed to open."), MB_OK);
  78. m_bOnFirstRecord = TRUE;
  79. m_bOnLastRecord = TRUE;
  80. }
  81. }
  82. COleDBRecordView::OnInitialUpdate();
  84. }
  86. /////////////////////////////////////////////////////////////////////////////
  87. // COLEDBDepartmentMFCView diagnostics
  89. #ifdef _DEBUG
  90. void COLEDBDepartmentMFCView::AssertValid() const
  91. {
  92. COleDBRecordView::AssertValid();
  93. }
  95. void COLEDBDepartmentMFCView::Dump(CDumpContext& dc) const
  96. {
  97. COleDBRecordView::Dump(dc);
  98. }
  100. COLEDBDepartmentMFCDoc* COLEDBDepartmentMFCView::GetDocument() // non-debug version is inline
  101. {
  102. ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(COLEDBDepartmentMFCDoc)));
  103. return (COLEDBDepartmentMFCDoc*)m_pDocument;
  104. }
  105. #endif //_DEBUG
  107. /////////////////////////////////////////////////////////////////////////////
  108. // COLEDBDepartmentMFCView database support
  109. CRowset* COLEDBDepartmentMFCView::OnGetRowset()
  110. {
  111. return m_pSet;
  112. }
  115. /////////////////////////////////////////////////////////////////////////////
  116. // COLEDBDepartmentMFCView message handlers
  118. void COLEDBDepartmentMFCView::OnDestroy() 
  119. {
  120.     if (m_bChangesMade) {
  121.         //Yes was chosen. Save out record
  122.         if (AfxMessageBox(
  123.             "Do you want to save changes to the database?",
  124.             MB_YESNO) == IDYES) {
  125.     UpdateData(TRUE);
  126. m_pSet->SetData();
  127.             OnFileSave();
  128.         }
  129.     }
  130. COleDBRecordView::OnDestroy();
  131. }
  133. void COLEDBDepartmentMFCView::OnFileSave() 
  134. {
  135.     if (m_bChangesMade) {
  136.         m_bChangesMade = FALSE;
  137. HRESULT hr = m_pSet->Update();
  138. if (!SUCCEEDED(hr)) {
  139. COLEDBErrorChecking::DisplaySingleError(hr, "Update in the OnFileSave");
  140. }
  141.     }
  142. }
  144. void COLEDBDepartmentMFCView::OnChangeDepartmentcode() 
  145. {
  146.     m_bChangesMade = TRUE;
  147. }
  149. void COLEDBDepartmentMFCView::OnChangeDepartmentname() 
  150. {
  151.     m_bChangesMade = TRUE;
  152. }