Virtual Sample (C++)
This sample illustrates using virtual mode with cell editing.
The source code is located at C:\Program Files (x86)\Softelvdm\SftTree OCX 7.5\Samples\VC++\Virtual\VirtualDlg.cpp or C:\Program Files\Softelvdm\SftTree OCX 7.5\Samples\VC++\Virtual\VirtualDlg.cpp (on 32-bit Windows versions).
// VirtualDlg.cpp : implementation file
//
#include "stdafx.h"
#include "Virtual.h"
#include "VirtualDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CVirtualDlg dialog
CVirtualDlg::CVirtualDlg(CWnd* pParent /*=NULL*/)
: CDialog(CVirtualDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CVirtualDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
m_Bitmaps.Create(IDB_BITMAPS, 16, 0, RGB(0,0,255));
m_Worlds.Create(IDB_WORLDS, 32, 0, RGB(255,255,255));
m_PicCount = 0;
}
void CVirtualDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CVirtualDlg)
DDX_Control(pDX, IDC_EDIT1, m_Edit1);
DDX_Control(pDX, IDC_SFTTREE1, m_Tree);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CVirtualDlg, CDialog)
//{{AFX_MSG_MAP(CVirtualDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_DESTROY()
ON_WM_TIMER()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CVirtualDlg message handlers
BOOL CVirtualDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// 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
m_vTree = m_Tree.GetControlUnknown();
ASSERT(m_vTree != NULL);
m_vTree->VirtualMode = VARIANT_TRUE;
m_vTree->VirtualCount(10000000);
m_vTree->VirtualImageSizes(16, 16, 16, 16, 16, 16, 16, 16);
// Make columns and row headers optimal
// but do this at the end of the list, because our sample
// data is larger at the end
m_vTree->Items->TopIndex = m_vTree->Items->Count - 1;
m_vTree->ColumnsObj->MakeOptimal();
m_vTree->RowHeaders->MakeOptimal();
m_vTree->Items->RecalcHorizontalExtent();
m_vTree->Items->TopIndex = 0;
SetTimer(TIMER_ID, 100, NULL);
return TRUE; // return TRUE unless you set the focus to a control
}
// 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 CVirtualDlg::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 CVirtualDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CVirtualDlg::OnDestroy()
{
KillTimer(TIMER_ID);
CDialog::OnDestroy();
}
void CVirtualDlg::OnTimer(UINT_PTR nIDEvent)
{
++m_PicCount;
if (m_PicCount > 15)
m_PicCount = 0;
m_vTree->RowColumnHeader->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Worlds, m_PicCount);
}
void CVirtualDlg::OnItemClickSftTree1(long ItemIndex, short ColIndex, short AreaType, short Button, short Shift)
{
if (AreaType == constSftTreeText)
m_vTree->Cell[ItemIndex][ColIndex]->Edit(0, _variant_t(0L));
}
void CVirtualDlg::OnItemDblClickSftTree1(long ItemIndex, short ColIndex, short AreaType, short Button, short Shift)
{
if (AreaType == constSftTreeColumnRes)
m_vTree->Column[ColIndex]->MakeOptimal();
}
void CVirtualDlg::OnVirtualItemSftTree1(long RowIndex, LPDISPATCH ItemObject)
{
IVirtualItemPtr pItemObj = ItemObject;
CString str;
str.Format(_T("Item %ld"), RowIndex);
pItemObj->Item->Cell[0]->Text = (LPCTSTR) str;
str.Format(_T("Cell %ld"), RowIndex);
pItemObj->Item->Cell[1]->Text = (LPCTSTR) str;
pItemObj->Item->Cell[2]->Text = _T("A");
str.Format(_T("%ld"), RowIndex % 7);
pItemObj->Item->Cell[3]->Text = (LPCTSTR) str;
str.Format(_T("Last %ld"), RowIndex);
pItemObj->Item->Cell[4]->Text = (LPCTSTR) str;
str.Format(_T("R%ld"), RowIndex);
pItemObj->Item->RowHeader->Text = (LPCTSTR) str;
pItemObj->Item->Enabled = ((RowIndex % 2) == 0) ? VARIANT_TRUE : VARIANT_FALSE;
if (RowIndex % 17 == 0)
pItemObj->Item->RowHeader->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)(RowIndex % 10));
if (RowIndex % 3 == 0) {
pItemObj->Item->Cell[1]->ForeColor = RGB(255,0,0);
pItemObj->Item->Cell[1]->BackColor = RGB(255,255,255);
}
if (RowIndex % 5 == 0) {
IFontPtr pFont = pItemObj->Item->Cell[1]->Font();
pFont->put_Bold(TRUE);
}
if (RowIndex % 7 == 0) {
pItemObj->Item->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)((RowIndex + 9) % 10));
pItemObj->Item->LabelImage->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)((RowIndex + 1) % 10));
}
if (RowIndex % 13 == 0)
pItemObj->Item->RowHeader->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)((RowIndex + 5) % 10));
if (RowIndex % 11 == 0)
pItemObj->Item->RowHeader->ImageHAlign = halignSftTreeRight;
if (RowIndex % 9 == 0)
pItemObj->Item->Cell[1]->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)((RowIndex + 3) % 10));
if (RowIndex % 7 == 0) {
pItemObj->Item->Cell[0]->Image->SetImageListH((OLE_HANDLE)(HIMAGELIST)m_Bitmaps, (short)((RowIndex + 2) % 10));
pItemObj->Item->Cell[0]->ImageHAlign = halignSftTreeRight;
}
}
void CVirtualDlg::OnEditInitializingSftTree1(long FAR* Window, VARIANT FAR* vData, long EditIndex, short EditCol, long FAR* LeftPix, long FAR* TopPix, long FAR* WidthPix, long FAR* HeightPix)
{
KillTimer(TIMER_ID);
HWND hwndControl = m_Edit1.m_hWnd;
// LeftPix/TopPix/WidthPix/HeightPix describes the current cell area
// we need to return the position and size needed for editing.
// In this example, we use the height of the control on the form
// and center it over the cell.
CRect rect;
m_Edit1.GetWindowRect(&rect);
*TopPix = *TopPix + (*HeightPix - rect.Height()) / 2;
*HeightPix = rect.Height();
// Set the text in the control used for cell editing and
// set other control-specific properties
CString str((LPCWSTR) m_vTree->Cell[EditIndex][EditCol]->Text);
m_Edit1.SetWindowText(str);
m_Edit1.SetSel(0, -1, FALSE);
// Return the control's window handle
*Window = (OLE_HANDLE) hwndControl;
// Define navigation keys
// VK_TAB
m_vTree->CellEditIntercept(VK_TAB, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
// VK_RETURN
m_vTree->CellEditIntercept(VK_RETURN, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
// VK_HOME
m_vTree->CellEditIntercept(VK_HOME, cellEditInterceptSftTreeControlChar);
// VK_END
m_vTree->CellEditIntercept(VK_END, cellEditInterceptSftTreeControlChar);
// VK_UP
m_vTree->CellEditIntercept(VK_UP, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
// VK_DOWN
m_vTree->CellEditIntercept(VK_DOWN, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
}
void CVirtualDlg::OnEditNavigatingSftTree1(long Key, short Shift, long ItemIndex, short ColIndex)
{
// Process key pressed
m_vTree->EditNavigate(Key, Shift);
}
void CVirtualDlg::OnEditValidateSftTree1(long Window, const VARIANT FAR& vData, long EditIndex, short EditCol, BOOL FAR* InputValid)
{
// Validate the new cell contents
CString str;
m_Edit1.GetWindowText(str);
if (str != (LPCTSTR) m_vTree->Cell[EditIndex][EditCol]->Text)
AfxMessageBox(_T("This example doesn't preserve the changes you make, because the sample data is randomly generated."));
}
void CVirtualDlg::OnEditEndedSftTree1(BOOL Accepted, long ItemIndex, short ColIndex)
{
SetTimer(TIMER_ID, 100, NULL); // restart world timer again
}
BEGIN_EVENTSINK_MAP(CVirtualDlg, CDialog)
//{{AFX_EVENTSINK_MAP(CVirtualDlg)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 4 /* ItemClick */, OnItemClickSftTree1, VTS_I4 VTS_I2 VTS_I2 VTS_I2 VTS_I2)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 5 /* ItemDblClick */, OnItemDblClickSftTree1, VTS_I4 VTS_I2 VTS_I2 VTS_I2 VTS_I2)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 31 /* VirtualItem */, OnVirtualItemSftTree1, VTS_I4 VTS_DISPATCH)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 38 /* EditInitializing */, OnEditInitializingSftTree1, VTS_PI4 VTS_PVARIANT VTS_I4 VTS_I2 VTS_PI4 VTS_PI4 VTS_PI4 VTS_PI4)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 43 /* EditNavigating */, OnEditNavigatingSftTree1, VTS_I4 VTS_I2 VTS_I4 VTS_I2)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 37 /* EditValidate */, OnEditValidateSftTree1, VTS_I4 VTS_VARIANT VTS_I4 VTS_I2 VTS_PBOOL)
ON_EVENT(CVirtualDlg, IDC_SFTTREE1, 40 /* EditEnded */, OnEditEndedSftTree1, VTS_BOOL VTS_I4 VTS_I2)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()
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