List Control with OLE Drag '& Drop

Features

Control Usage

1. Initialize the OLE libraries in the application InitInstance member function:

BOOL CDdDemoApp::InitInstance()
{
 AfxEnableControlContainer();
#ifdef _AFXDLL
 // Call this when using MFC in a shared DLL
 Enable3dControls(); 
#else
 // Call this when linking to MFC statically
 Enable3dControlsStatic(); 
#endif

 //-------------------------
 // Initialize OLE libraries
 //-------------------------
 if (!AfxOleInit())
  return FALSE;

2. Insert the #include "DDListCtrl.h" in the dialog C++ file which contains the List Ctrls.
3. In the OnInitDialog member function of the dialog, initialize and customize the list controls initialization according to the following template:

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

 //.................................

 //---------------------------->
 // 1 - Subclass the list controls
 //----------------------------
 m_listVars.SubclassDlgItem(IDC_LIST_VAR, this);
 m_listRows.SubclassDlgItem(IDC_LIST_ROWS, this);
 m_listCols.SubclassDlgItem(IDC_LIST_COLS, this);
 m_listData.SubclassDlgItem(IDC_LIST_DATA, this);
 m_listPages.SubclassDlgItem(IDC_LIST_PAGES, this);
  
 //--------------------------------------------------------------
 // 2 - Initialize the List view controls
 //--------------------------------------------------------------
 CString s(TCHAR('M'),29);
 int len = m_listVars.GetStringWidth(s)+15;
 LV_COLUMN lvC;
 lvC.mask = LVCF_FMT | LVCF_WIDTH;
 lvC.fmt  = LVCFMT_LEFT;  // Left-align column
 lvC.cx   = len;          // Width of column in pixels
 if (m_listVars.InsertColumn(0,&lvC) == -1)
  return FALSE;

 m_listVars.DeleteAllItems();

 m_listVars.SetLocalDD(FALSE);   // Disable local Drag&Drop
 m_listVars.SetScrolling(FALSE); // and auto scrolling

 // Create a column for the row variables list view control.
 if (m_listRows.InsertColumn(0,&lvC) == -1)
  return FALSE;

 m_listRows.DeleteAllItems();

 // Create a column for the column variables list view control.
 if (m_listCols.InsertColumn(0,&lvC) == -1)
  return FALSE;

 m_listCols.DeleteAllItems();

 // Create a column for the data variables list view control.
 if (m_listData.InsertColumn(0,&lvC) == -1)
  return FALSE;

 m_listData.DeleteAllItems();

 // Create a column for the page variables view control.
 if (m_listPages.InsertColumn(0,&lvC) == -1)
  return FALSE;
  
 m_listPages.DeleteAllItems();

 //------------------------------------------
 // 3 - Set the content of the list view controls
 //------------------------------------------
 CWordArray aVars;
 int size = m_pSelectInfo->m_asNames.GetSize();
 aVars.SetSize(size);
 // Initially the list of available variables contains all variables
 for (int i=0; i<size; i++)
  aVars[i] = i;

 // Fill the list of variables
 m_pData->FillListCtrl(m_listVars, aVars);
 m_pData->FillListCtrl(m_listRows, m_pSelectInfo->m_aRowsVar); 
 m_pData->FillListCtrl(m_listCols, m_pSelectInfo->m_aColsVar);  
 m_pData->FillListCtrl(m_listData, m_pSelectInfo->m_aDataVar); 
 m_pData->FillListCtrl(m_listPages, m_pSelectInfo->m_aPagesVar); 

 //-----------------------------------------------
 // 4 - Initialize the list controls for Drag&Drop
 //-----------------------------------------------
 m_listVars.Initialize();
 m_listRows.Initialize();
 m_listCols.Initialize();
 m_listData.Initialize();
 m_listPages.Initialize();
 
 return TRUE;  
}

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