parameterizeddlg.cpp

主要介绍vc++6.0的编程过程

// ParameterizedDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Parameterized.h"
#include "ParameterizedDlg.h"

#include "UserMasterSet.h"
#include "about.h"

#include "PermissionsQry.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CParameterizedDlg dialog

CParameterizedDlg::CParameterizedDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CParameterizedDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CParameterizedDlg)
	m_strUserName = _T("");
	m_iStatus = 0;
	m_strUserID = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CParameterizedDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CParameterizedDlg)
	DDX_Control(pDX, IDC_TREE_PERMISSIONS, m_treePermissions);
	DDX_Text(pDX, IDC_EDT_USERNAME, m_strUserName);
	DDX_Text(pDX, IDC_EDT_STATUS, m_iStatus);
	DDX_Text(pDX, IDC_EDT_USERID, m_strUserID);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CParameterizedDlg, CDialog)
	//{{AFX_MSG_MAP(CParameterizedDlg)
	ON_WM_SYSCOMMAND()
	ON_BN_CLICKED(ID_APP_ABOUT, OnAbout)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_GET_USER, OnBtnGetUser)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CParameterizedDlg message handlers

BOOL CParameterizedDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CParameterizedDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CParameterizedDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CParameterizedDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CParameterizedDlg::OnAbout()
{
 CAboutDlg().DoModal();
}

void CParameterizedDlg::OnBtnGetUser() 
{
 CUserMasterSet* pUserMasterSet = NULL;

 try
 {
  pUserMasterSet = new CUserMasterSet();
 }
 catch(CMemoryException* pe)
 {
  TRACE("CParameterizedDlg::OnOk - Memory "
   "Exception creating recordset\n");

  pUserMasterSet = NULL;

  pe->Delete();
 }
  
 if (pUserMasterSet)
 {
  UpdateData(TRUE);

  try
  {
   pUserMasterSet->m_strFilter = "sUserID = ?";
   pUserMasterSet->m_sUserIDParam = m_strUserID;
   if (pUserMasterSet->Open())
   {
    if (!pUserMasterSet->IsEOF())
    {     
     m_strUserName = pUserMasterSet->m_sUserName;
     m_iStatus = pUserMasterSet->m_iStatus;

     ShowPermissions();
     UpdateData(FALSE);
    }
    else
    {
     CString str = m_strUserID + CString(" was not "
      "found");

     AfxMessageBox(str);
    }
    pUserMasterSet->Close();
   }
   delete pUserMasterSet;
  }
  catch(CDBException* pe)
  {
   if (pUserMasterSet->IsOpen())
   {
    pUserMasterSet->Close();
   }
   delete pUserMasterSet;

   TRACE("CParameterizedDlg::OnOk - Database "
    "Exception - %s\n", pe->m_strError);

   pe->Delete();
  }
 }
}

void CParameterizedDlg::ShowPermissions()
{
 m_treePermissions.DeleteAllItems();

 CPermissionsQry* pPermissionsQry = NULL;

 try
 {
  pPermissionsQry = new CPermissionsQry();
 }
 catch(CMemoryException* pe)
 {
  TRACE("CParameterizedDlg::OnOk - Memory Exception "
   "creating recordset\n");

  pPermissionsQry = NULL;

  pe->Delete();
 }

 if (pPermissionsQry)
 {
  try
  {
   pPermissionsQry->m_sUserIDParam = m_strUserID;
   if (pPermissionsQry->Open())
   {
    if (!pPermissionsQry->IsEOF())
    {   
     TV_INSERTSTRUCT tvinsert;
     HTREEITEM hCompany = NULL;

     CString strPrevCompanyID;  
     while (!pPermissionsQry->IsEOF())
     {     
      tvinsert.hParent = NULL;
      tvinsert.hInsertAfter = TVI_LAST;
      tvinsert.item.mask = TVIF_TEXT;
      tvinsert.item.hItem = NULL;
      tvinsert.item.state = 0;
      tvinsert.item.stateMask = 0;
      tvinsert.item.cchTextMax = 
       pPermissionsQry->m_sCompanyName.GetLength() 
       + 1;
      tvinsert.item.iSelectedImage = 0;
      tvinsert.item.cChildren = 0;
      tvinsert.item.lParam = 0;
      tvinsert.item.pszText = 
       pPermissionsQry->m_sCompanyName.GetBuffer(
       tvinsert.item.cchTextMax);

      hCompany =
       m_treePermissions.InsertItem(&tvinsert);

      strPrevCompanyID = 
       pPermissionsQry->m_sCompanyID;

      while ((!pPermissionsQry->IsEOF())
      && (strPrevCompanyID == 
      pPermissionsQry->m_sCompanyID))
      {
       if (hCompany)
       {
        tvinsert.hParent = hCompany;
        tvinsert.item.cchTextMax = 
         pPermissionsQry->m_sSubsystemName.GetLength() 
         + 1;
        tvinsert.item.pszText = 
         pPermissionsQry->m_sSubsystemName.GetBuffer(
         tvinsert.item.cchTextMax);
        m_treePermissions.InsertItem(&tvinsert);
       }

       pPermissionsQry->MoveNext();
      }
     }
    }
    else
    {
     CString str = m_strUserID + CString(" was "
      "not found");
     AfxMessageBox(str);
    }

    pPermissionsQry->Close();
   }
   delete pPermissionsQry;
  }
  catch(CDBException* pe)
  {
   if (pPermissionsQry->IsOpen())
   {
    pPermissionsQry->Close();
   }
   delete pPermissionsQry;
   TRACE("CParameterizedDlg::OnOk - Database "
    "Exception "
    "- %s\n", pe->m_strError);
  }
 }
}