CellEditing Sample (C++)
This sample illustrates cell editing using edit controls and combo boxes, cell navigation, uneditable cells, checkbox .
The source code is located at C:\Program Files (x86)\Softelvdm\SftTree OCX 7.5\Samples\VC++\CellEditing\CellEditingDlg.cpp or C:\Program Files\Softelvdm\SftTree OCX 7.5\Samples\VC++\CellEditing\CellEditingDlg.cpp (on 32-bit Windows versions).
// CellEditingDlg.cpp : implementation file
//
#include "stdafx.h"
#include "CellEditing.h"
#include "CellEditingDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CCellEditingDlg dialog
CCellEditingDlg::CCellEditingDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCellEditingDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCellEditingDlg)
// 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);
}
void CCellEditingDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCellEditingDlg)
DDX_Control(pDX, IDC_COMBO1, m_Combo1);
DDX_Control(pDX, IDC_EDIT1, m_Edit1);
DDX_Control(pDX, IDC_SFTTREE1, m_Tree);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CCellEditingDlg, CDialog)
//{{AFX_MSG_MAP(CCellEditingDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CCellEditingDlg message handlers
BOOL CCellEditingDlg::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);
long ItemIndex;
ItemIndex = m_vTree->Items->Add("Click on a cell to edit");
m_vTree->Cell[ItemIndex][1]->Text = _T("Use Tab/Return keys");
m_vTree->Cell[ItemIndex][2]->Text = _T("Use arrow keys");
ItemIndex = m_vTree->Items->Add("This sample supports cell navigation");
m_vTree->Cell[ItemIndex][1]->Text = _T("Ctrl+Home and Ctrl+End");
int i;
for (i = 1 ; i <= 50 ; ++i) {
ISftTreeItemPtr pItem;
ISftTreeCellPtr pCell;
ItemIndex = m_vTree->Items->Add(_T("An item"));
m_vTree->Cell[ItemIndex][1]->Text = _T("2nd Column");
m_vTree->Cell[ItemIndex][2]->Text = _T("3rd Column");
ItemIndex = m_vTree->Items->Add("Another item");
pItem = m_vTree->Item[ItemIndex];
pItem->Level = 1;
pItem->Cell[1]->Text = _T("2nd Column");
pItem->Cell[2]->Text = _T("3rd Column");
ItemIndex = m_vTree->Items->Add(_T("This item can't be edited"));
pItem = m_vTree->Item[ItemIndex];
pItem->Level = 2;
pItem->EditIgnore = VARIANT_TRUE;
pItem->Cell[0]->Image->Appearance = sftImageCheckboxYes;
pItem->Cell[1]->Text = _T("2nd Column (can't edit this item)");
pItem->Cell[2]->Text = _T("3rd Column (can't edit this item)");
ItemIndex = m_vTree->Items->Add(_T("A fourth item"));
pItem = m_vTree->Item[ItemIndex];
pItem->Level = 1;
pCell = m_vTree->Cell[ItemIndex][1];
pCell->Text = _T("This cell can't be edited");
pCell->EditIgnore = VARIANT_TRUE;
pCell->Image->Appearance = sftImageCheckboxYes;
m_vTree->Cell[ItemIndex][2]->Text = _T("3rd Column");
}
m_vTree->ColumnsObj->MakeOptimal();
m_vTree->RowHeaders->MakeOptimal();
m_vTree->Items->RecalcHorizontalExtent();
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 CCellEditingDlg::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 CCellEditingDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CCellEditingDlg::OnItemClickSftTree1(long ItemIndex, short ColIndex, short AreaType, short Button, short Shift)
{
if (AreaType == constSftTreeCellText) {
m_vTree->Cell[ItemIndex][ColIndex]->Edit(NULL, _variant_t(0L));
} else if (AreaType == constSftTreeCellGraphic) {
// check if check box - toggle
ISftPictureObjectPtr pImg;
pImg = m_vTree->Cell[ItemIndex][ColIndex]->Image;
if (pImg->Appearance == sftImageCheckboxNo)
pImg->Appearance = sftImageCheckboxYes;
else if (pImg->Appearance == sftImageCheckboxYes)
pImg->Appearance = sftImageCheckboxNo;
}
}
void CCellEditingDlg::OnItemDblClickSftTree1(long ItemIndex, short ColIndex, short AreaType, short Button, short Shift)
{
if (AreaType == constSftTreeColumnRes)
m_vTree->Column[ColIndex]->MakeOptimal();
else if (AreaType == constSftTreeCellGraphic) {
// check if check box - toggle
ISftPictureObjectPtr pImg;
pImg = m_vTree->Cell[ItemIndex][ColIndex]->Image;
if (pImg->Appearance == sftImageCheckboxNo)
pImg->Appearance = sftImageCheckboxYes;
else if (pImg->Appearance == sftImageCheckboxYes)
pImg->Appearance = sftImageCheckboxNo;
}
}
void CCellEditingDlg::OnToolTipVScrollSftTree1(BSTR FAR* Text, long ItemIndex, short ColIndex)
{
CString str;
str.Format(_T("Item %ld - %s"), ItemIndex, (LPCTSTR)CString(*Text));
*Text = str.AllocSysString();
}
void CCellEditingDlg::OnEditAllowedSftTree1(long ItemIndex, short ColIndex, BOOL FAR* Allowed)
{
// Last chance to suppress cell editing for a cell
//if (ItemIndex == 1 && ColIndex == 1)
// *Allowed = VARIANT_FALSE;
}
void CCellEditingDlg::OnEditInitializingSftTree1(long FAR* Window, VARIANT FAR* vData, long EditIndex, short EditCol, long FAR* LeftPix, long FAR* TopPix, long FAR* WidthPix, long FAR* HeightPix)
{
HWND hwndControl;
// Choose a control based on current column being edited
if (EditCol == 1)
hwndControl = m_Combo1.m_hWnd;
else
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;
if (hwndControl == m_Edit1.m_hWnd)
m_Edit1.GetWindowRect(&rect);
else
m_Combo1.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);
if (hwndControl == m_Edit1.m_hWnd) {
m_Edit1.SetWindowText(str);
m_Edit1.SetSel(0, -1, FALSE);
} else {
m_Combo1.ResetContent();
m_Combo1.AddString(_T("Option 1"));
m_Combo1.AddString(_T("Option 2"));
m_Combo1.AddString(_T("Option 3"));
m_Combo1.AddString(str);
m_Combo1.SetWindowText(str);
}
// 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);
if (hwndControl == m_Edit1.m_hWnd) {
// We want these keys just for the edit control.
// VK_UP
m_vTree->CellEditIntercept(VK_UP, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
// VK_DOWN
m_vTree->CellEditIntercept(VK_DOWN, (SftTreeCellEditInterceptStyleConstants) (cellEditInterceptSftTreeChar | cellEditInterceptSftTreeControlChar | cellEditInterceptSftTreeShiftChar));
}
}
void CCellEditingDlg::OnEditInitializedSftTree1(long Window, const VARIANT FAR& vData, long EditIndex, short EditCol, long ParentWindow, long LeftPix, long TopPix, long WidthPix, long HeightPix, BOOL FAR* Positioned)
{
// Show the combo box dropdown portion
if ((HWND)Window == m_Combo1.m_hWnd) {
// We're taking over positioning, so we can drop down the dropdown portion of the control
*Positioned = VARIANT_TRUE;
m_Combo1.MoveWindow(LeftPix, TopPix, WidthPix, HeightPix, TRUE);
m_Combo1.EnableWindow();
m_Combo1.ShowWindow(SW_NORMAL);
m_Combo1.SetFocus();
m_Combo1.ShowDropDown();
}
}
void CCellEditingDlg::OnEditNavigatingSftTree1(long Key, short Shift, long ItemIndex, short ColIndex)
{
// Process key pressed
m_vTree->EditNavigate(Key, Shift);
}
void CCellEditingDlg::OnEditValidateSftTree1(long Window, const VARIANT FAR& vData, long EditIndex, short EditCol, BOOL FAR* InputValid)
{
// Validate the new cell contents
CString str;
if ((HWND)Window == m_Edit1.m_hWnd)
m_Edit1.GetWindowText(str);
else
m_Combo1.GetWindowText(str);
str.TrimLeft();
if (str.GetLength() <= 0) {
AfxMessageBox(_T("Just to demonstrate data input validation, this example rejects empty cells. Please enter some data."));
*InputValid = VARIANT_FALSE;
}
}
void CCellEditingDlg::OnEditEndingSftTree1(long Window, const VARIANT FAR& vData, long EditIndex, short EditCol, BOOL SaveInput)
{
// Save the new cell contents
if (SaveInput) {
CString str;
if ((HWND)Window == m_Edit1.m_hWnd)
m_Edit1.GetWindowText(str);
else
m_Combo1.GetWindowText(str);
m_vTree->Cell[EditIndex][EditCol]->Text = _bstr_t(str);
}
}
BEGIN_EVENTSINK_MAP(CCellEditingDlg, CDialog)
//{{AFX_EVENTSINK_MAP(CCellEditingDlg)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 4 /* ItemClick */, OnItemClickSftTree1, VTS_I4 VTS_I2 VTS_I2 VTS_I2 VTS_I2)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 5 /* ItemDblClick */, OnItemDblClickSftTree1, VTS_I4 VTS_I2 VTS_I2 VTS_I2 VTS_I2)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 28 /* ToolTipVScroll */, OnToolTipVScrollSftTree1, VTS_PBSTR VTS_I4 VTS_I2)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 44 /* EditAllowed */, OnEditAllowedSftTree1, VTS_I4 VTS_I2 VTS_PBOOL)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 38 /* EditInitializing */, OnEditInitializingSftTree1, VTS_PI4 VTS_PVARIANT VTS_I4 VTS_I2 VTS_PI4 VTS_PI4 VTS_PI4 VTS_PI4)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 39 /* EditInitialized */, OnEditInitializedSftTree1, VTS_I4 VTS_VARIANT VTS_I4 VTS_I2 VTS_I4 VTS_I4 VTS_I4 VTS_I4 VTS_I4 VTS_PBOOL)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 43 /* EditNavigating */, OnEditNavigatingSftTree1, VTS_I4 VTS_I2 VTS_I4 VTS_I2)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 37 /* EditValidate */, OnEditValidateSftTree1, VTS_I4 VTS_VARIANT VTS_I4 VTS_I2 VTS_PBOOL)
ON_EVENT(CCellEditingDlg, IDC_SFTTREE1, 36 /* EditEnding */, OnEditEndingSftTree1, VTS_I4 VTS_VARIANT VTS_I4 VTS_I2 VTS_BOOL)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()
On
Off