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GridCtrl.cpp
executable file
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GridCtrl.cpp
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// GridCtrl.cpp : implementation file
//
// MFC Grid Control
//
// Written by Chris Maunder
// mailto:chrismaunder@codeguru.com
//
// Copyright (c) 1998-1999.
//
// The code contained in this file is based on the original
// WorldCom Grid control written by Joe Willcoxson,
// mailto:chinajoe@aol.com
// http://users.aol.com/chinajoe
// The code has gone through so many modifications that I'm
// not sure if there is even a single original line of code.
// In any case Joe's code was a great framewaork on which to
// build.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name and all copyright
// notices remains intact. If the source code in this file is used in
// any commercial application then a statement along the lines of
// "Portions copyright (c) Chris Maunder, 1998" must be included in
// the startup banner, "About" box or printed documentation. An email
// letting me know that you are using it would be nice as well. That's
// not much to ask considering the amount of work that went into this.
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
// Expect bugs!
//
// Please use and enjoy, and let me know of any bugs/mods/improvements
// that you have found/implemented and I will fix/incorporate them into
// this file.
//
// History:
// --------
// This control is constantly evolving, sometimes due to new features that I
// feel are necessary, and sometimes due to existing bugs. Where possible I
// have credited the changes to those who contributed code corrections or
// enhancements (names in brackets) or code suggestions (suggested by...)
//
// 1.0 20 Feb 1998 First release version.
// 1.01 24 Feb 1998 Memory leak fix (Jens Bohlmann)
// Fixec typo (my fault!) in CMemDC.h - Claus Arend-Schneider)
// Bug in GetSelectedCount (Lyn Newton)
// 1.02 4 Mar 1998 Scrolling a little neater (less dead area)
// Cell selection via OnTimer correctly updates Focus cell (Suggested by Lyn Newton)
// 1.03 17 Mar 1998 Clipboard functions added, Intellimouse support
// Using 32 bit scroll pos functions instead of 16 bit ("cronos")
// Added OLE drag and drop.
// 1.04 6 Apr 1998 Added Ctrl-A = Select All, fixed CGridDropTarget
// problem, minor bug in CopyTextFromGrid (assert on
// empty string). Cleaned up reponse to m_bEditable
// (OnDrop and Ctrl-X disabled)
// 1.05 10 May 1998 Memory leak fixed. (Yuheng Zhao)
// Changed OLE initialisation (Carlo Comino)
// Added separate fore + background cell colours (Suggested by John Crane)
// ExpandToFit etc cleaned up - now decreases and
// increases cell sizes to fit client area.
// Added notification messages for the grid's parent (Suggested by
// Added GVIS_READONLY state
// 1.06 20 May 1998 Added TAB key handling. (Daniela Rybarova)
// Intellimouse code correction for whole page scrolling (Paul Grant)
// Fixed 16 bit thumb track problems (now 32 bit) (Paul Grant)
// Fixed accelerator key problem in CInPlaceEdit (Matt Weagle)
// Fixed Stupid ClassWizard code parsing problem (Michael A. Barnhart)
// Double buffering now programmatically selectable
// Workaround for win95 drag and drop registration problem
// Corrected UNICODE implementation of clipboard stuff
// Dragging and dropping from a selection onto itself no
// no longer causes the cells to be emptied
// 1.07 28 Jul 1998 Added EnsureVisible. (Roelf Werkman)
// Fixed delete key problem on read-only cells. (Serge Weinstock)
// OnEndInPlaceEdit sends notification AFTER storing
// the modified text in the cell.
// Added CreateInPlaceEditControl to make it easier to
// change the way cells are edited. (suggested by Chris Clark)
// Added Set/GetGridColor.
// CopyTextToClipboard and PasteTextToGrid problem with
// blank cells fixed, and CopyTextToClipboard tweaked.
// SetModified called when cutting text or hitting DEL. (Jonathan Watters)
// Focus cell made visible when editing begins.
// Blank lines now treated correctly when pasting data.
// Removed ES_MULTILINE style from the default edit control.
// Added virtual CreateCell(row, col) function.
// Fonts now specified on a per-cell basis using Get/SetItemFont.
// 1.08 6 Aug 1998 Ctrl+arrows now allows cell navigation. Modified
// CreateInPlaceEditControl to accept ID of control.
// Added Titletips to grid cells. (Added EnableTitleTips / GetTitleTips)
// 1.09 12 Sep 1998 When printing, parent window title is printed in header - Gert Rijs
// GetNextItem search with GVNI_DROPHILITED now returns
// cells with GVIS_DROPHILITED set, instead of GVIS_FOCUSED (Franco Bez)
// (Also fixed minor bug in GetNextItem) (Franco Bez)
// Cell selection using Shift+arrows works - Franco Bez
// SetModified called after edits ONLY if contents changed (Franco Bez)
// Cell colours now dithered in 256 colour screens.
// Support for MSVC 4.2 (Graham Cheetham)
// 1.10 30 Nov 1998 Titletips now disappear on a scroll event. Compiler errors
// fixed. Grid lines drawing fixed (Graham Cheetham).
// Cell focus fix on Isert Row/Col (Jochen Kauffmann)
// Added DeleteNonFixedRows() (John Rackley)
// Message #define conflict fixed (Oskar Wieland)
// Titletips & cell insert/delete fix (Ramesh Dhar)
// Titletips repeat-creation bug fixed.
// GVN_SELCHANGED message now sends current cell ID
// Font resource leak in GetTextExtent fixed (Gavin Jerman)
// More TAB fixes (Andreas Ruh)
// 1.11 1 Dec 1998 GetNextItem bug fix (suggested by Francis Fu)
// InsertColumn (-1) fix (Roy Hopkins)
// Was too liberal with the "IsEditable"'s. oops. (Michel Hete)
// 1.11a 4 Jan 1999 Compiler errors in VC6 fixed.
// 1.12 10 Apr 1999 Cleanup to allow GRIDCONTROL_NO_CLIPBOARD define
// CE #defines added. (Thanks to Frank Uzzolino for a start on this)
// TitleTip display fixed for cells with images, plus it now uses cell font
// Added GetTextRect and IsCellFixed
// Focus change problem when resizing columns fixed (Sergey Nikiforenko)
// Grid line drawing problem in fixed cells fixed (Sergey Nikiforenko)
// CreateCell format persistance bug fixed (Sergey Nikiforenko)
// DeleteColumn now returns TRUE (oops) (R. Elmer)
// Enter, Tab and Esc key problem (finally) fixed - Darren Webb and Koay Kah Hoe
// OnSize infinite loop fixed - Steve Kowald
// GVN_SELCHANGING and GVN_SELCHANGED values changed to avoid conflicts (Hiroaki Watanabe)
// Added single row selection mode (Yao Cai)
// Fixed image drawing clip problem
// Reduced unnecessary redraws significantly
// GetNextItem additions and bug fix, and GVNI_AREA search option (Franco Bez)
// Added GVIS_MODIFIED style for cells, so individual cells can have their
// modification status queried. (Franco Bez)
// 1.12a 15 Apr 1999 Removed the SetModified/GetModified inlines (no compiler warning!)
// Renamed IDC_INPLACE_CONTROL to IDC_INPLACE_CONTROL and moved
// to the header
//
// TODO:
// - OnOutOfMemory function instead of exceptions
// - Decrease timer interval over time to speed up selection over time
//
// NOTE: Grid data is stored row-by-row, so all operations on large numbers
// of cells should be done row-by-row as well.
//
// KNOWN ISSUES TO BE ADDRESSED (Please don't send bug reports):
// * Killfocus comes to late when a command is selected by the Menu.
// When you are editing a cell and choose a Menuitem that searches for all the
// modified cells it is not found. When you chose the menu a second time it is
// found. I assume that the Menu command is executed before the cell receives the
// KillFocus event. Expect similar Problems with accelerators. (Franco Bez)
// * When you select a cell and move the mouse around (with the Left button down
// i.e continuing with your selection) - if the mouse is over the Fixed column
// or Row the drawing of the selected region is strange - in particular as you
// move up and down say the Left Fixed Column notice the behaviour of the Focus
// Cell - it is out of sync. (Vinay Desai)
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "MemDC.h"
#include "GridCtrl.h"
#include "InPlaceEdit.h"
// OLE stuff for clipboard operations
#include <afxadv.h> // For CSharedFile
#include <afxconv.h> // For LPTSTR -> LPSTR macros
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define HEADER_HEIGHT 2 // For printing
#define FOOTER_HEIGHT 2
#define LEFT_MARGIN 4
#define RIGHT_MARGIN 4
#define TOP_MARGIN 1
#define BOTTOM_MARGIN 1
#define GAP 1
#define SELECTED_CELL_FONT_WEIGHT 600 // weight of text for selected items
IMPLEMENT_DYNCREATE(CGridCtrl, CWnd)
void AFXAPI DDX_GridControl(CDataExchange* pDX, int nIDC, CGridCtrl& rControl)
{
if (rControl.GetSafeHwnd() == NULL) // not subclassed yet
{
ASSERT(!pDX->m_bSaveAndValidate);
HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
if (!rControl.SubclassWindow(hWndCtrl))
{
ASSERT(FALSE); // possibly trying to subclass twice?
AfxThrowNotSupportedException();
}
#ifndef _AFX_NO_OCC_SUPPORT
else
{
// If the control has reparented itself (e.g., invisible control),
// make sure that the CWnd gets properly wired to its control site.
if (pDX->m_pDlgWnd->GetSafeHwnd() != ::GetParent(rControl.GetSafeHwnd()))
rControl.AttachControlSite(pDX->m_pDlgWnd);
}
#endif //!_AFX_NO_OCC_SUPPORT
}
}
// Get the number of lines to scroll with each mouse wheel notch
// Why doesn't windows give us this function???
UINT GetMouseScrollLines()
{
int nScrollLines = 3; // reasonable default
HKEY hKey;
if (RegOpenKeyEx(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"),
0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
{
TCHAR szData[128];
DWORD dwKeyDataType;
DWORD dwDataBufSize = sizeof(szData);
if (RegQueryValueEx(hKey, _T("WheelScrollLines"), NULL, &dwKeyDataType,
(LPBYTE) &szData, &dwDataBufSize) == ERROR_SUCCESS)
{
nScrollLines = _tcstoul(szData, NULL, 10);
}
RegCloseKey(hKey);
}
return nScrollLines;
}
/////////////////////////////////////////////////////////////////////////////
// CGridCtrl
CGridCtrl::CGridCtrl(int nRows, int nCols, int nFixedRows, int nFixedCols)
{
RegisterWindowClass();
// Initialize OLE libraries
m_bMustUninitOLE = FALSE;
#if !defined(GRIDCONTROL_NO_DRAGDROP) || !defined(GRIDCONTROL_NO_CLIPBOARD)
_AFX_THREAD_STATE* pState = AfxGetThreadState();
if (!pState->m_bNeedTerm)
{
SCODE sc = ::OleInitialize(NULL);
if (FAILED(sc))
AfxMessageBox(_T("OLE initialization failed. Make sure that the OLE libraries are the correct version"));
else
m_bMustUninitOLE = TRUE;
}
#endif
// Store the system colours in case they change. The gridctrl uses
// these colours, and in OnSysColorChange we can check to see if
// the gridctrl colours have been changed from the system colours.
// If they have, then leave them, otherwise change them to reflect
// the new system colours.
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
m_crGridColour = RGB(192,192,192);
m_nRows = 0;
m_nCols = 0;
m_nFixedRows = 0;
m_nFixedCols = 0;
m_nDefCellHeight = 10; // These will get changed to something meaningful
m_nDefCellWidth = 30; // when the window is created or subclassed
m_nVScrollMax = 0; // Scroll position
m_nHScrollMax = 0;
m_nMargin = 0; // cell padding
m_nRowsPerWheelNotch = GetMouseScrollLines(); // Get the number of lines
// per mouse wheel notch to scroll
m_MouseMode = MOUSE_NOTHING;
m_nGridLines = GVL_BOTH;
m_bEditable = TRUE;
m_bListMode = FALSE;
m_bSingleRowSelection = FALSE;
m_bAllowDraw = TRUE; // allow draw updates
m_bEnableSelection = TRUE;
m_bAllowRowResize = TRUE;
m_bAllowColumnResize = TRUE;
m_bSortOnClick = TRUE; // Sort on header row click if in list mode
m_bHandleTabKey = TRUE;
#ifdef _WIN32_WCE
m_bDoubleBuffer = FALSE; // Use double buffering to avoid flicker?
#else
m_bDoubleBuffer = TRUE; // Use double buffering to avoid flicker?
#endif
m_bTitleTips = TRUE; // show cell title tips
m_bAscending = TRUE; // sorting stuff
m_SortColumn = -1;
m_nTimerID = 0; // For drag-selection
m_nTimerInterval = 25; // (in milliseconds)
m_nResizeCaptureRange = 3; // When resizing columns/row, the cursor has to be
// within +/-3 pixels of the dividing line for
// resizing to be possible
m_pImageList = NULL;
m_bAllowDragAndDrop = FALSE; // for drag and drop
#ifndef _WIN32_WCE
// Initially use the system message font for the GridCtrl font
NONCLIENTMETRICS ncm;
ncm.cbSize = sizeof(NONCLIENTMETRICS);
VERIFY(SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, 0));
memcpy(&m_Logfont, &(ncm.lfMessageFont), sizeof(LOGFONT));
#else
LOGFONT lf;
GetObject(GetStockObject(SYSTEM_FONT), sizeof(LOGFONT), &lf);
memcpy(&m_Logfont, &lf, sizeof(LOGFONT));
#endif
// Set up the initial grid size
SetRowCount(nRows);
SetColumnCount(nCols);
SetFixedRowCount(nFixedRows);
SetFixedColumnCount(nFixedCols);
// Set the colours
SetTextColor(m_crWindowText);
SetTextBkColor(m_crWindowColour);
SetBkColor(m_crShadow);
SetFixedTextColor(m_crWindowText);
SetFixedBkColor(m_cr3DFace);
// set initial selection range (ie. none)
m_SelectedCellMap.RemoveAll();
m_PrevSelectedCellMap.RemoveAll();
}
CGridCtrl::~CGridCtrl()
{
DeleteAllItems();
DestroyWindow();
m_Font.DeleteObject();
#if !defined(GRIDCONTROL_NO_DRAGDROP) || !defined(GRIDCONTROL_NO_CLIPBOARD)
// Uninitialize OLE support
if (m_bMustUninitOLE)
::OleUninitialize();
#endif
}
// Register the window class if it has not already been registered.
BOOL CGridCtrl::RegisterWindowClass()
{
WNDCLASS wndcls;
HINSTANCE hInst = AfxGetInstanceHandle();
// HINSTANCE hInst = AfxGetResourceHandle();
if (!(::GetClassInfo(hInst, GRIDCTRL_CLASSNAME, &wndcls)))
{
// otherwise we need to register a new class
wndcls.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
wndcls.lpfnWndProc = ::DefWindowProc;
wndcls.cbClsExtra = wndcls.cbWndExtra = 0;
wndcls.hInstance = hInst;
wndcls.hIcon = NULL;
wndcls.hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW);
wndcls.hbrBackground = (HBRUSH) (COLOR_3DFACE + 1);
wndcls.lpszMenuName = NULL;
wndcls.lpszClassName = GRIDCTRL_CLASSNAME;
if (!AfxRegisterClass(&wndcls)) {
AfxThrowResourceException();
return FALSE;
}
}
return TRUE;
}
BOOL CGridCtrl::Create(const RECT& rect, CWnd* pParentWnd, UINT nID, DWORD dwStyle)
{
ASSERT(pParentWnd->GetSafeHwnd());
if (!CWnd::Create(GRIDCTRL_CLASSNAME, NULL, dwStyle, rect, pParentWnd, nID))
return FALSE;
#ifndef GRIDCONTROL_NO_DRAGDROP
m_DropTarget.Register(this);
#endif
// Create titletips
#ifndef GRIDCONTROL_NO_TITLETIPS
if (m_bTitleTips)
m_TitleTip.Create(this);
#endif
// The number of rows and columns will only be non-zero if the constructor
// was called with non-zero initialising parameters. If this window was created
// using a dialog template then the number of rows and columns will be 0 (which
// means that the code below will not be needed - which is lucky 'cause it ain't
// gonna get called in a dialog-template-type-situation.
TRY {
m_arRowHeights.SetSize(m_nRows); // initialize row heights
m_arColWidths.SetSize(m_nCols); // initialize column widths
}
CATCH (CMemoryException, e) {
e->ReportError();
e->Delete();
return FALSE;
}
END_CATCH
for (int i = 0; i < m_nRows; i++) m_arRowHeights[i] = m_nDefCellHeight;
for (i = 0; i < m_nCols; i++) m_arColWidths[i] = m_nDefCellWidth;
ResetScrollBars();
return TRUE;
}
void CGridCtrl::PreSubclassWindow()
{
CWnd::PreSubclassWindow();
HFONT hFont = ::CreateFontIndirect(&m_Logfont);
OnSetFont((LPARAM)hFont, 0);
DeleteObject(hFont);
ResetScrollBars();
}
BOOL CGridCtrl::SubclassWindow(HWND hWnd)
{
if (!CWnd::SubclassWindow(hWnd))
return FALSE;
#ifndef GRIDCONTROL_NO_DRAGDROP
m_DropTarget.Register(this);
#endif
#ifndef GRIDCONTROL_NO_TITLETIPS
if (m_bTitleTips && !IsWindow(m_TitleTip.m_hWnd))
m_TitleTip.Create(this);
#endif
return TRUE;
}
LRESULT CGridCtrl::SendMessageToParent(int nRow, int nCol, int nMessage)
{
if (!IsWindow(m_hWnd))
return 0;
NM_GRIDVIEW nmgv;
nmgv.iRow = nRow;
nmgv.iColumn = nCol;
nmgv.hdr.hwndFrom = m_hWnd;
nmgv.hdr.idFrom = GetDlgCtrlID();
nmgv.hdr.code = nMessage;
CWnd *pOwner = GetOwner();
if (pOwner && IsWindow(pOwner->m_hWnd))
return pOwner->SendMessage(WM_NOTIFY, nmgv.hdr.idFrom, (LPARAM)&nmgv);
else
return 0;
}
BEGIN_MESSAGE_MAP(CGridCtrl, CWnd)
//{{AFX_MSG_MAP(CGridCtrl)
ON_WM_PAINT()
ON_WM_HSCROLL()
ON_WM_VSCROLL()
ON_WM_SIZE()
ON_WM_LBUTTONUP()
ON_WM_LBUTTONDOWN()
ON_WM_MOUSEMOVE()
ON_WM_TIMER()
ON_WM_GETDLGCODE()
ON_WM_KEYDOWN()
ON_WM_CHAR()
ON_WM_LBUTTONDBLCLK()
ON_WM_ERASEBKGND()
ON_COMMAND(ID_EDIT_SELECT_ALL, OnEditSelectAll)
ON_UPDATE_COMMAND_UI(ID_EDIT_SELECT_ALL, OnUpdateEditSelectAll)
//}}AFX_MSG_MAP
#ifndef _WIN32_WCE_NO_CURSOR
ON_WM_SETCURSOR()
#endif
#ifndef _WIN32_WCE
ON_WM_SYSCOLORCHANGE()
ON_WM_CAPTURECHANGED()
#endif
#ifndef GRIDCONTROL_NO_CLIPBOARD
ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
ON_COMMAND(ID_EDIT_CUT, OnEditCut)
ON_UPDATE_COMMAND_UI(ID_EDIT_CUT, OnUpdateEditCut)
ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste)
#endif
#if !defined(_WIN32_WCE) && (_MFC_VER >= 0x0421)
ON_WM_MOUSEWHEEL()
#endif
#if (_WIN32_WCE >= 210)
ON_WM_SETTINGCHANGE()
#endif
ON_MESSAGE(WM_SETFONT, OnSetFont)
ON_MESSAGE(WM_GETFONT, OnGetFont)
ON_NOTIFY(GVN_ENDLABELEDIT, IDC_INPLACE_CONTROL, OnEndInPlaceEdit)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CGridCtrl message handlers
void CGridCtrl::OnPaint()
{
CPaintDC dc(this); // device context for painting
if (m_bDoubleBuffer) // Use a memory DC to remove flicker
{
CMemDC MemDC(&dc);
OnDraw(&MemDC);
}
else // Draw raw - this helps in debugging vis problems.
OnDraw(&dc);
}
BOOL CGridCtrl::OnEraseBkgnd(CDC* /*pDC*/)
{
return TRUE; // Don't erase the background.
}
// Custom background erasure. This gets called from within the OnDraw function,
// since we will (most likely) be using a memory DC to stop flicker. If we just
// erase the background normally through OnEraseBkgnd, and didn't fill the memDC's
// selected bitmap with colour, then all sorts of vis problems would occur
void CGridCtrl::EraseBkgnd(CDC* pDC)
{
CRect VisRect, ClipRect, rect;
CBrush FixedBack(GetFixedBkColor()),
TextBack(GetTextBkColor()),
Back(GetBkColor());
if (pDC->GetClipBox(ClipRect) == ERROR)
return;
GetVisibleNonFixedCellRange(VisRect);
// Draw Fixed columns background
int nFixedColumnWidth = GetFixedColumnWidth();
if (ClipRect.left < nFixedColumnWidth && ClipRect.top < VisRect.bottom)
pDC->FillRect(CRect(ClipRect.left, ClipRect.top,
nFixedColumnWidth, VisRect.bottom),
&FixedBack);
// Draw Fixed rows background
int nFixedRowHeight = GetFixedRowHeight();
if (ClipRect.top < nFixedRowHeight &&
ClipRect.right > nFixedColumnWidth && ClipRect.left < VisRect.right)
pDC->FillRect(CRect(nFixedColumnWidth-1, ClipRect.top,
VisRect.right, nFixedRowHeight),
&FixedBack);
// Draw non-fixed cell background
if (rect.IntersectRect(VisRect, ClipRect))
{
CRect CellRect(max(nFixedColumnWidth, rect.left),
max(nFixedRowHeight, rect.top),
rect.right, rect.bottom);
pDC->FillRect(CellRect, &TextBack);
}
// Draw right hand side of window outside grid
if (VisRect.right < ClipRect.right)
pDC->FillRect(CRect(VisRect.right, ClipRect.top,
ClipRect.right, ClipRect.bottom),
&Back);
// Draw bottom of window below grid
if (VisRect.bottom < ClipRect.bottom && ClipRect.left < VisRect.right)
pDC->FillRect(CRect(ClipRect.left, VisRect.bottom,
VisRect.right, ClipRect.bottom),
&Back);
}
void CGridCtrl::OnSize(UINT nType, int cx, int cy)
{
static BOOL bAlreadyInsideThisProcedure = FALSE;
if (bAlreadyInsideThisProcedure)
return;
if (!::IsWindow(m_hWnd))
return;
// Start re-entry blocking
bAlreadyInsideThisProcedure = TRUE;
// if (::IsWindow(GetSafeHwnd()) && GetFocus()->GetSafeHwnd() != GetSafeHwnd())
SetFocus(); // Auto-destroy any InPlaceEdit's
CWnd::OnSize(nType, cx, cy);
ResetScrollBars();
// End re-entry blocking
bAlreadyInsideThisProcedure = FALSE;
}
UINT CGridCtrl::OnGetDlgCode()
{
UINT nCode = DLGC_WANTARROWS | DLGC_WANTCHARS; // DLGC_WANTALLKEYS; //
if (m_bHandleTabKey && !IsCTRLpressed())
nCode |= DLGC_WANTTAB;
return nCode;
}
#ifndef _WIN32_WCE
// If system colours change, then redo colours
void CGridCtrl::OnSysColorChange()
{
CWnd::OnSysColorChange();
if (GetTextColor() == m_crWindowText) // Still using system colours
SetTextColor(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetTextBkColor() == m_crWindowColour)
SetTextBkColor(::GetSysColor(COLOR_WINDOW));
if (GetBkColor() == m_crShadow)
SetBkColor(::GetSysColor(COLOR_3DSHADOW));
if (GetFixedTextColor() == m_crWindowText)
SetFixedTextColor(::GetSysColor(COLOR_WINDOWTEXT));
if (GetFixedBkColor() == m_cr3DFace)
SetFixedBkColor(::GetSysColor(COLOR_3DFACE));
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
}
#endif
#ifndef _WIN32_WCE_NO_CURSOR
// If we are drag-selecting cells, or drag and dropping, stop now
void CGridCtrl::OnCaptureChanged(CWnd *pWnd)
{
if (pWnd->GetSafeHwnd() == GetSafeHwnd()) return;
// kill timer if active
if (m_nTimerID != 0)
{
KillTimer(m_nTimerID);
m_nTimerID = 0;
}
#ifndef GRIDCONTROL_NO_DRAGDROP
// Kill drag and drop if active
if (m_MouseMode == MOUSE_DRAGGING)
m_MouseMode = MOUSE_NOTHING;
#endif
}
#endif
#if (_MFC_VER >= 0x0421) || (_WIN32_WCE >= 210)
// If system settings change, then redo colours
void CGridCtrl::OnSettingChange(UINT uFlags, LPCTSTR lpszSection)
{
CWnd::OnSettingChange(uFlags, lpszSection);
if (GetTextColor() == m_crWindowText) // Still using system colours
SetTextColor(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetTextBkColor() == m_crWindowColour)
SetTextBkColor(::GetSysColor(COLOR_WINDOW));
if (GetBkColor() == m_crShadow)
SetBkColor(::GetSysColor(COLOR_3DSHADOW));
if (GetFixedTextColor() == m_crWindowText)
SetFixedTextColor(::GetSysColor(COLOR_WINDOWTEXT));
if (GetFixedBkColor() == m_cr3DFace)
SetFixedBkColor(::GetSysColor(COLOR_3DFACE));
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
m_nRowsPerWheelNotch = GetMouseScrollLines(); // Get the number of lines
}
#endif
// For drag-selection. Scrolls hidden cells into view
// TODO: decrease timer interval over time to speed up selection over time
void CGridCtrl::OnTimer(UINT nIDEvent)
{
ASSERT(nIDEvent == WM_LBUTTONDOWN);
if (nIDEvent != WM_LBUTTONDOWN)
return;
CPoint pt, origPt;
#ifdef _WIN32_WCE
if (m_MouseMode == MOUSE_NOTHING)
return;
origPt = GetMessagePos();
#else
if (!GetCursorPos(&origPt))
return;
#endif
ScreenToClient(&origPt);
CRect rect;
GetClientRect(rect);
int nFixedRowHeight = GetFixedRowHeight();
int nFixedColWidth = GetFixedColumnWidth();
pt = origPt;
if (pt.y > rect.bottom)
{
//SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
SendMessage(WM_KEYDOWN, VK_DOWN, 0);
if (pt.x < rect.left)
pt.x = rect.left;
if (pt.x > rect.right)
pt.x = rect.right;
pt.y = rect.bottom;
OnSelecting(GetCellFromPt(pt));
}
else if (pt.y < nFixedRowHeight)
{
//SendMessage(WM_VSCROLL, SB_LINEUP, 0);
SendMessage(WM_KEYDOWN, VK_UP, 0);
if (pt.x < rect.left)
pt.x = rect.left;
if (pt.x > rect.right)
pt.x = rect.right;
pt.y = nFixedRowHeight + 1;
OnSelecting(GetCellFromPt(pt));
}
pt = origPt;
if (pt.x > rect.right)
{
// SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
SendMessage(WM_KEYDOWN, VK_RIGHT, 0);
if (pt.y < rect.top)
pt.y = rect.top;
if (pt.y > rect.bottom)
pt.y = rect.bottom;
pt.x = rect.right;
OnSelecting(GetCellFromPt(pt));
}
else if (pt.x < nFixedColWidth)
{
//SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
SendMessage(WM_KEYDOWN, VK_LEFT, 0);
if (pt.y < rect.top)
pt.y = rect.top;
if (pt.y > rect.bottom)
pt.y = rect.bottom;
pt.x = nFixedColWidth + 1;
OnSelecting(GetCellFromPt(pt));
}
}
// move about with keyboard
void CGridCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if (!IsValid(m_idCurrentCell))
{
CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
return;
}
CCellID next = m_idCurrentCell;
BOOL bChangeLine = FALSE;
if (IsCTRLpressed())
{
switch (nChar)
{
case 'A': OnEditSelectAll(); break;
#ifndef GRIDCONTROL_NO_CLIPBOARD
case 'X': OnEditCut(); break;
case 'C': OnEditCopy(); break;
case 'V': OnEditPaste(); break;
#endif
}
}
switch (nChar)
{
case VK_DELETE:
if (IsCellEditable(m_idCurrentCell.row, m_idCurrentCell.col))
{
SendMessageToParent(m_idCurrentCell.row, m_idCurrentCell.col, GVN_BEGINLABELEDIT);
SetItemText(m_idCurrentCell.row, m_idCurrentCell.col, _T(""));
SetModified(TRUE, m_idCurrentCell.row, m_idCurrentCell.col);
SendMessageToParent(m_idCurrentCell.row, m_idCurrentCell.col, GVN_ENDLABELEDIT);
RedrawCell(m_idCurrentCell);
}
break;
case VK_TAB:
if (IsSHIFTpressed())
{
if (next.col > m_nFixedCols)
next.col--;
else if (next.col == m_nFixedCols && next.row > m_nFixedRows)
{
next.row--;
next.col = GetColumnCount() - 1;
bChangeLine = TRUE;
}
else
CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
}
else
{
if (next.col < (GetColumnCount() - 1))
next.col++;
else if (next.col == (GetColumnCount() - 1) &&
next.row < (GetRowCount() - 1) )
{
next.row++;
next.col = m_nFixedCols;
bChangeLine = TRUE;
}
else
CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
}
break;
case VK_DOWN:
if (next.row < (GetRowCount() - 1))
next.row++;
break;
case VK_UP:
if (next.row > m_nFixedRows)
next.row--;
break;
case VK_RIGHT:
if (next.col < (GetColumnCount() - 1))
next.col++;
break;
case VK_LEFT:
if (next.col > m_nFixedCols)
next.col--;
break;
case VK_NEXT:
{
CCellID idOldTopLeft = GetTopleftNonFixedCell();
SendMessage(WM_VSCROLL, SB_PAGEDOWN, 0);
CCellID idNewTopLeft = GetTopleftNonFixedCell();
int increment = idNewTopLeft.row - idOldTopLeft.row;
if (increment) {
next.row += increment;
if (next.row > (GetRowCount() - 1))
next.row = GetRowCount() - 1;
}
else
next.row = GetRowCount() - 1;
break;
}
case VK_PRIOR:
{
CCellID idOldTopLeft = GetTopleftNonFixedCell();
SendMessage(WM_VSCROLL, SB_PAGEUP, 0);
CCellID idNewTopLeft = GetTopleftNonFixedCell();
int increment = idNewTopLeft.row - idOldTopLeft.row;
if (increment)
{
next.row += increment;
if (next.row < m_nFixedRows)
next.row = m_nFixedRows;
} else
next.row = m_nFixedRows;
break;
}
case VK_HOME:
SendMessage(WM_VSCROLL, SB_TOP, 0);
next.row = m_nFixedRows;
break;
case VK_END:
SendMessage(WM_VSCROLL, SB_BOTTOM, 0);
next.row = GetRowCount() - 1;
break;
default:
CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
}
if (next != m_idCurrentCell)
{
// While moving with the Cursorkeys the current ROW/CELL will get selected
// OR Selection will get expanded when SHIFT is pressed
// Cut n paste from OnLButtonDown - Franco Bez
// Added check for NULL mouse mode - Chris Maunder.
if (m_MouseMode == MOUSE_NOTHING)
{
m_PrevSelectedCellMap.RemoveAll();
m_MouseMode = m_bListMode? MOUSE_SELECT_ROW : MOUSE_SELECT_CELLS;
if (!IsSHIFTpressed() || nChar == VK_TAB)
m_SelectionStartCell = next;
OnSelecting(next);
m_MouseMode = MOUSE_NOTHING;
}
SetFocusCell(next);
if (!IsCellVisible(next))
{
EnsureVisible(next); // Make sure cell is visible
switch (nChar) {
case VK_RIGHT:
SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
break;
case VK_LEFT:
SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
break;
case VK_DOWN:
SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
break;
case VK_UP:
SendMessage(WM_VSCROLL, SB_LINEUP, 0);
break;
case VK_TAB:
if (IsSHIFTpressed())
{
if (bChangeLine)
{
SendMessage(WM_VSCROLL, SB_LINEUP, 0);
SetScrollPos32(SB_HORZ, m_nHScrollMax);
break;
}
else
SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
}
else
{
if (bChangeLine)
{
SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
SetScrollPos32(SB_HORZ, 0);
break;
}
else
SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
}
break;
}
Invalidate();
}
}
}
// Instant editing of cells when keys are pressed
void CGridCtrl::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if (!IsCTRLpressed() && m_MouseMode == MOUSE_NOTHING)
{
if (!m_bHandleTabKey || (m_bHandleTabKey && nChar != VK_TAB))
OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, nChar);
}
CWnd::OnChar(nChar, nRepCnt, nFlags);
}
// Callback from any CInPlaceEdits that ended. This just calls OnEndEditCell,
// refreshes the edited cell and moves onto next cell if the return character
// from the edit says we should.
void CGridCtrl::OnEndInPlaceEdit(NMHDR* pNMHDR, LRESULT* pResult)
{
GV_DISPINFO *pgvDispInfo = (GV_DISPINFO *)pNMHDR;
GV_ITEM *pgvItem = &pgvDispInfo->item;