src/msw/checklst.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        msw/checklst.cpp
// Purpose:     implementation of wxCheckListBox class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     16.11.97
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "checklst.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN

#ifndef WX_PRECOMP
    #include "wx/object.h"
    #include "wx/colour.h"
    #include "wx/font.h"
    #include "wx/bitmap.h"
    #include "wx/window.h"
    #include "wx/listbox.h"
    #include "wx/dcmemory.h"

    #include "wx/settings.h"

    #include "wx/log.h"
#endif

#include "wx/ownerdrw.h"
#include "wx/checklst.h"

#include "wx/msw/wrapwin.h"
#include <windowsx.h>

#include "wx/msw/private.h"

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

// get item (converted to right type)
#define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))

// ============================================================================
// implementation
// ============================================================================


#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxCheckListBoxStyle )

wxBEGIN_FLAGS( wxCheckListBoxStyle )
    // new style border flags, we put them first to
    // use them for streaming out
    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
    wxFLAGS_MEMBER(wxBORDER_RAISED)
    wxFLAGS_MEMBER(wxBORDER_STATIC)
    wxFLAGS_MEMBER(wxBORDER_NONE)

    // old style border flags
    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
    wxFLAGS_MEMBER(wxRAISED_BORDER)
    wxFLAGS_MEMBER(wxSTATIC_BORDER)
    wxFLAGS_MEMBER(wxBORDER)

    // standard window styles
    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
    wxFLAGS_MEMBER(wxWANTS_CHARS)
    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
    wxFLAGS_MEMBER(wxVSCROLL)
    wxFLAGS_MEMBER(wxHSCROLL)

    wxFLAGS_MEMBER(wxLB_SINGLE)
    wxFLAGS_MEMBER(wxLB_MULTIPLE)
    wxFLAGS_MEMBER(wxLB_EXTENDED)
    wxFLAGS_MEMBER(wxLB_HSCROLL)
    wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
    wxFLAGS_MEMBER(wxLB_NEEDED_SB)
    wxFLAGS_MEMBER(wxLB_SORT)
    wxFLAGS_MEMBER(wxLB_OWNERDRAW)

wxEND_FLAGS( wxCheckListBoxStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")

wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
    wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
    wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )

#else
IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
#endif

// ----------------------------------------------------------------------------
// declaration and implementation of wxCheckListBoxItem class
// ----------------------------------------------------------------------------

class wxCheckListBoxItem : public wxOwnerDrawn
{
friend class WXDLLEXPORT wxCheckListBox;
public:
  // ctor
  wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);

  // drawing functions
  virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);

  // simple accessors and operations
  bool IsChecked() const { return m_bChecked; }

  void Check(bool bCheck);
  void Toggle() { Check(!IsChecked()); }

  void SendEvent();

private:

    DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
  bool            m_bChecked;
  wxCheckListBox *m_pParent;
  size_t          m_nIndex;
};

wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
                  : wxOwnerDrawn(wxEmptyString, true)   // checkable
{
  m_bChecked = false;
  m_pParent  = pParent;
  m_nIndex   = nIndex;

  // we don't initialize m_nCheckHeight/Width vars because it's
  // done in OnMeasure while they are used only in OnDraw and we
  // know that there will always be OnMeasure before OnDraw

  // fix appearance
  SetMarginWidth(GetDefaultMarginWidth());
}

bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
                                    wxODAction act, wxODStatus stat)
{
  if ( IsChecked() )
    stat = (wxOwnerDrawn::wxODStatus)(stat | wxOwnerDrawn::wxODChecked);

  if ( wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) ) {
    // ## using native API for performance and precision
    size_t nCheckWidth  = GetDefaultMarginWidth(),
         nCheckHeight = m_pParent->GetItemHeight();

    int x = rc.GetX(),
        y = rc.GetY();

    HDC hdc = (HDC)dc.GetHDC();

    // create pens
    HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)),
         hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)),
         hpenPrev = (HPEN)SelectObject(hdc, hpenBack);

    // we erase the 1-pixel border
    Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);

    // shift check mark 1 pixel to the right (it looks better like this)
    x++;

    if ( IsChecked() ) {
      // first create a monochrome bitmap in a memory DC
      HDC hdcMem = CreateCompatibleDC(hdc);
      HBITMAP hbmpCheck = CreateBitmap(nCheckWidth, nCheckHeight, 1, 1, 0);
      HBITMAP hbmpOld = (HBITMAP)SelectObject(hdcMem, hbmpCheck);

      // then draw a check mark into it

      RECT rect;
      rect.left   = 0;
      rect.top    = 0;
      rect.right  = nCheckWidth;
      rect.bottom = nCheckHeight;

#ifdef __WXWINCE__
      DrawFrameControl(hdcMem, &rect, DFC_BUTTON, DFCS_BUTTONCHECK);
#else
      DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
#endif

      // finally copy it to screen DC and clean up
      BitBlt(hdc, x, y, nCheckWidth - 1, nCheckHeight,
             hdcMem, 0, 0, SRCCOPY);

      SelectObject(hdcMem, hbmpOld);
      DeleteObject(hbmpCheck);
      DeleteDC(hdcMem);
    }

    // now we draw the smaller rectangle
    y++;
    nCheckWidth  -= 2;
    nCheckHeight -= 2;

    // draw hollow gray rectangle
    (void)SelectObject(hdc, hpenGray);
    HBRUSH hbrPrev  = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH));
    Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);

    // clean up
    (void)SelectObject(hdc, hpenPrev);
    (void)SelectObject(hdc, hbrPrev);

    DeleteObject(hpenBack);
    DeleteObject(hpenGray);

    /*
    dc.DrawRectangle(x, y, nCheckWidth, nCheckHeight);

    if ( IsChecked() ) {
      dc.DrawLine(x, y, x + nCheckWidth, y + nCheckHeight);
      dc.DrawLine(x, y + nCheckHeight, x + nCheckWidth, y);
    }
    */

    return true;
  }

  return false;
}

// change the state of the item and redraw it
void wxCheckListBoxItem::Check(bool check)
{
    m_bChecked = check;

    // index may be changed because new items were added/deleted
    if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
    {
        // update it
        int index = m_pParent->GetItemIndex(this);

        wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );

        m_nIndex = (size_t)index;
    }

    HWND hwndListbox = (HWND)m_pParent->GetHWND();

    RECT rcUpdate;

    if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
                       m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
    {
        wxLogDebug(wxT("LB_GETITEMRECT failed"));
    }

    ::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
}

// send an "item checked" event
void wxCheckListBoxItem::SendEvent()
{
    wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
    event.SetInt(m_nIndex);
    event.SetEventObject(m_pParent);
    m_pParent->ProcessCommand(event);
}

// ----------------------------------------------------------------------------
// implementation of wxCheckListBox class
// ----------------------------------------------------------------------------

// define event table
// ------------------
BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
  EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
  EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
END_EVENT_TABLE()

// control creation
// ----------------

// def ctor: use Create() to really create the control
wxCheckListBox::wxCheckListBox()
{
}

// ctor which creates the associated control
wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
                               const wxPoint& pos, const wxSize& size,
                               int nStrings, const wxString choices[],
                               long style, const wxValidator& val,
                               const wxString& name)
{
    Create(parent, id, pos, size, nStrings, choices, style, val, name);
}

wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
                               const wxPoint& pos, const wxSize& size,
                               const wxArrayString& choices,
                               long style, const wxValidator& val,
                               const wxString& name)
{
    Create(parent, id, pos, size, choices, style, val, name);
}

bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
                            const wxPoint& pos, const wxSize& size,
                            int n, const wxString choices[],
                            long style,
                            const wxValidator& validator, const wxString& name)
{
    return wxListBox::Create(parent, id, pos, size, n, choices,
                             style | wxLB_OWNERDRAW, validator, name);
}

bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
                            const wxPoint& pos, const wxSize& size,
                            const wxArrayString& choices,
                            long style,
                            const wxValidator& validator, const wxString& name)
{
    return wxListBox::Create(parent, id, pos, size, choices,
                             style | wxLB_OWNERDRAW, validator, name);
}

// misc overloaded methods
// -----------------------

void wxCheckListBox::Delete(int N)
{
    wxCHECK_RET( N >= 0 && N < m_noItems,
                 wxT("invalid index in wxListBox::Delete") );

    wxListBox::Delete(N);

    // free memory
    delete m_aItems[N];

    m_aItems.RemoveAt(N);
}

bool wxCheckListBox::SetFont( const wxFont &font )
{
    size_t i;
    for ( i = 0; i < m_aItems.GetCount(); i++ )
        m_aItems[i]->SetFont(font);

    wxListBox::SetFont(font);

    return true;
}

// create/retrieve item
// --------------------

// create a check list box item
wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
{
  wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
  return pItem;
}

// return item size
// ----------------
bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
{
  if ( wxListBox::MSWOnMeasure(item) ) {
    MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;

    // save item height
    m_nItemHeight = pStruct->itemHeight;

    // add place for the check mark
    pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();

    return true;
  }

  return false;
}

// check items
// -----------

bool wxCheckListBox::IsChecked(size_t uiIndex) const
{
    wxCHECK_MSG( uiIndex < (size_t)GetCount(), false, _T("bad wxCheckListBox index") );

    return GetItem(uiIndex)->IsChecked();
}

void wxCheckListBox::Check(size_t uiIndex, bool bCheck)
{
    wxCHECK_RET( uiIndex < (size_t)GetCount(), _T("bad wxCheckListBox index") );

    GetItem(uiIndex)->Check(bCheck);
}

// process events
// --------------

void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
{
    // what do we do?
    enum
    {
        None,
        Toggle,
        Set,
        Clear
    } oper;

    switch ( event.GetKeyCode() )
    {
        case WXK_SPACE:
            oper = Toggle;
            break;

        case WXK_NUMPAD_ADD:
        case '+':
            oper = Set;
            break;

        case WXK_NUMPAD_SUBTRACT:
        case '-':
            oper = Clear;
            break;

        default:
            oper = None;
    }

    if ( oper != None )
    {
        wxArrayInt selections;
        int count = 0;
        if ( HasMultipleSelection() )
        {
            count = GetSelections(selections);
        }
        else
        {
            int sel = GetSelection();
            if (sel != -1)
            {
                count = 1;
                selections.Add(sel);
            }
        }

        for ( int i = 0; i < count; i++ )
        {
            wxCheckListBoxItem *item = GetItem(selections[i]);
            if ( !item )
            {
                wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
                continue;
            }

            switch ( oper )
            {
                case Toggle:
                    item->Toggle();
                    break;

                case Set:
                case Clear:
                    item->Check( oper == Set );
                    break;

                default:
                    wxFAIL_MSG( _T("what should this key do?") );
            }

            // we should send an event as this has been done by the user and
            // not by the program
            item->SendEvent();
        }
    }
    else // nothing to do
    {
        event.Skip();
    }
}

void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
{
  // clicking on the item selects it, clicking on the checkmark toggles
  if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) {
    int nItem = HitTest(event.GetX(), event.GetY());

    if ( nItem != wxNOT_FOUND ) {
      wxCheckListBoxItem *item = GetItem(nItem);
      item->Toggle();
      item->SendEvent();
    }
    //else: it's not an error, just click outside of client zone
  }
  else {
    // implement default behaviour: clicking on the item selects it
    event.Skip();
  }
}

int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
{
    int nItem = (int)::SendMessage
                             (
                              (HWND)GetHWND(),
                              LB_ITEMFROMPOINT,
                              0,
                              MAKELPARAM(x, y)
                             );

  return nItem >= m_noItems ? wxNOT_FOUND : nItem;
}


wxSize wxCheckListBox::DoGetBestSize() const
{
    wxSize best = wxListBox::DoGetBestSize();
    best.x += wxOwnerDrawn::GetDefaultMarginWidth();  // add room for the checkbox
    CacheBestSize(best);
    return best;
}

#endif
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: msw/checklst.cpp
	3	// Purpose: implementation of wxCheckListBox class
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 16.11.97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	21	#pragma implementation "checklst.h"
	22	#endif
	23
	24	// For compilers that support precompilation, includes "wx.h".
	25	#include "wx/wxprec.h"
	26
	27	#ifdef __BORLANDC__
	28	#pragma hdrstop
	29	#endif
	30
	31	#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN
	32
	33	#ifndef WX_PRECOMP
	34	#include "wx/object.h"
	35	#include "wx/colour.h"
	36	#include "wx/font.h"
	37	#include "wx/bitmap.h"
	38	#include "wx/window.h"
	39	#include "wx/listbox.h"
	40	#include "wx/dcmemory.h"
	41
	42	#include "wx/settings.h"
	43
	44	#include "wx/log.h"
	45	#endif
	46
	47	#include "wx/ownerdrw.h"
	48	#include "wx/checklst.h"
	49
	50	#include "wx/msw/wrapwin.h"
	51	#include <windowsx.h>
	52
	53	#include "wx/msw/private.h"
	54
	55	// ----------------------------------------------------------------------------
	56	// private functions
	57	// ----------------------------------------------------------------------------
	58
	59	// get item (converted to right type)
	60	#define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n)))
	61
	62	// ============================================================================
	63	// implementation
	64	// ============================================================================
	65
	66
	67	#if wxUSE_EXTENDED_RTTI
	68	WX_DEFINE_FLAGS( wxCheckListBoxStyle )
	69
	70	wxBEGIN_FLAGS( wxCheckListBoxStyle )
	71	// new style border flags, we put them first to
	72	// use them for streaming out
	73	wxFLAGS_MEMBER(wxBORDER_SIMPLE)
	74	wxFLAGS_MEMBER(wxBORDER_SUNKEN)
	75	wxFLAGS_MEMBER(wxBORDER_DOUBLE)
	76	wxFLAGS_MEMBER(wxBORDER_RAISED)
	77	wxFLAGS_MEMBER(wxBORDER_STATIC)
	78	wxFLAGS_MEMBER(wxBORDER_NONE)
	79
	80	// old style border flags
	81	wxFLAGS_MEMBER(wxSIMPLE_BORDER)
	82	wxFLAGS_MEMBER(wxSUNKEN_BORDER)
	83	wxFLAGS_MEMBER(wxDOUBLE_BORDER)
	84	wxFLAGS_MEMBER(wxRAISED_BORDER)
	85	wxFLAGS_MEMBER(wxSTATIC_BORDER)
	86	wxFLAGS_MEMBER(wxBORDER)
	87
	88	// standard window styles
	89	wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
	90	wxFLAGS_MEMBER(wxCLIP_CHILDREN)
	91	wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
	92	wxFLAGS_MEMBER(wxWANTS_CHARS)
	93	wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
	94	wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
	95	wxFLAGS_MEMBER(wxVSCROLL)
	96	wxFLAGS_MEMBER(wxHSCROLL)
	97
	98	wxFLAGS_MEMBER(wxLB_SINGLE)
	99	wxFLAGS_MEMBER(wxLB_MULTIPLE)
	100	wxFLAGS_MEMBER(wxLB_EXTENDED)
	101	wxFLAGS_MEMBER(wxLB_HSCROLL)
	102	wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
	103	wxFLAGS_MEMBER(wxLB_NEEDED_SB)
	104	wxFLAGS_MEMBER(wxLB_SORT)
	105	wxFLAGS_MEMBER(wxLB_OWNERDRAW)
	106
	107	wxEND_FLAGS( wxCheckListBoxStyle )
	108
	109	IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")
	110
	111	wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
	112	wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
	113	wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /flags/ , wxT("Helpstring") , wxT("group")) // style
	114	wxEND_PROPERTIES_TABLE()
	115
	116	wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
	117	wxEND_HANDLERS_TABLE()
	118
	119	wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
	120
	121	#else
	122	IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
	123	#endif
	124
	125	// ----------------------------------------------------------------------------
	126	// declaration and implementation of wxCheckListBoxItem class
	127	// ----------------------------------------------------------------------------
	128
	129	class wxCheckListBoxItem : public wxOwnerDrawn
	130	{
	131	friend class WXDLLEXPORT wxCheckListBox;
	132	public:
	133	// ctor
	134	wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);
	135
	136	// drawing functions
	137	virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);
	138
	139	// simple accessors and operations
	140	bool IsChecked() const { return m_bChecked; }
	141
	142	void Check(bool bCheck);
	143	void Toggle() { Check(!IsChecked()); }
	144
	145	void SendEvent();
	146
	147	private:
	148
	149	DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
	150	bool m_bChecked;
	151	wxCheckListBox *m_pParent;
	152	size_t m_nIndex;
	153	};
	154
	155	wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
	156	: wxOwnerDrawn(wxEmptyString, true) // checkable
	157	{
	158	m_bChecked = false;
	159	m_pParent = pParent;
	160	m_nIndex = nIndex;
	161
	162	// we don't initialize m_nCheckHeight/Width vars because it's
	163	// done in OnMeasure while they are used only in OnDraw and we
	164	// know that there will always be OnMeasure before OnDraw
	165
	166	// fix appearance
	167	SetMarginWidth(GetDefaultMarginWidth());
	168	}
	169
	170	bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
	171	wxODAction act, wxODStatus stat)
	172	{
	173	if ( IsChecked() )
	174	stat = (wxOwnerDrawn::wxODStatus)(stat \| wxOwnerDrawn::wxODChecked);
	175
	176	if ( wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) ) {
	177	// ## using native API for performance and precision
	178	size_t nCheckWidth = GetDefaultMarginWidth(),
	179	nCheckHeight = m_pParent->GetItemHeight();
	180
	181	int x = rc.GetX(),
	182	y = rc.GetY();
	183
	184	HDC hdc = (HDC)dc.GetHDC();
	185
	186	// create pens
	187	HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)),
	188	hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)),
	189	hpenPrev = (HPEN)SelectObject(hdc, hpenBack);
	190
	191	// we erase the 1-pixel border
	192	Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
	193
	194	// shift check mark 1 pixel to the right (it looks better like this)
	195	x++;
	196
	197	if ( IsChecked() ) {
	198	// first create a monochrome bitmap in a memory DC
	199	HDC hdcMem = CreateCompatibleDC(hdc);
	200	HBITMAP hbmpCheck = CreateBitmap(nCheckWidth, nCheckHeight, 1, 1, 0);
	201	HBITMAP hbmpOld = (HBITMAP)SelectObject(hdcMem, hbmpCheck);
	202
	203	// then draw a check mark into it
	204
	205	RECT rect;
	206	rect.left = 0;
	207	rect.top = 0;
	208	rect.right = nCheckWidth;
	209	rect.bottom = nCheckHeight;
	210
	211	#ifdef __WXWINCE__
	212	DrawFrameControl(hdcMem, &rect, DFC_BUTTON, DFCS_BUTTONCHECK);
	213	#else
	214	DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
	215	#endif
	216
	217	// finally copy it to screen DC and clean up
	218	BitBlt(hdc, x, y, nCheckWidth - 1, nCheckHeight,
	219	hdcMem, 0, 0, SRCCOPY);
	220
	221	SelectObject(hdcMem, hbmpOld);
	222	DeleteObject(hbmpCheck);
	223	DeleteDC(hdcMem);
	224	}
	225
	226	// now we draw the smaller rectangle
	227	y++;
	228	nCheckWidth -= 2;
	229	nCheckHeight -= 2;
	230
	231	// draw hollow gray rectangle
	232	(void)SelectObject(hdc, hpenGray);
	233	HBRUSH hbrPrev = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH));
	234	Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
	235
	236	// clean up
	237	(void)SelectObject(hdc, hpenPrev);
	238	(void)SelectObject(hdc, hbrPrev);
	239
	240	DeleteObject(hpenBack);
	241	DeleteObject(hpenGray);
	242
	243	/*
	244	dc.DrawRectangle(x, y, nCheckWidth, nCheckHeight);
	245
	246	if ( IsChecked() ) {
	247	dc.DrawLine(x, y, x + nCheckWidth, y + nCheckHeight);
	248	dc.DrawLine(x, y + nCheckHeight, x + nCheckWidth, y);
	249	}
	250	*/
	251
	252	return true;
	253	}
	254
	255	return false;
	256	}
	257
	258	// change the state of the item and redraw it
	259	void wxCheckListBoxItem::Check(bool check)
	260	{
	261	m_bChecked = check;
	262
	263	// index may be changed because new items were added/deleted
	264	if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
	265	{
	266	// update it
	267	int index = m_pParent->GetItemIndex(this);
	268
	269	wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );
	270
	271	m_nIndex = (size_t)index;
	272	}
	273
	274	HWND hwndListbox = (HWND)m_pParent->GetHWND();
	275
	276	RECT rcUpdate;
	277
	278	if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
	279	m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
	280	{
	281	wxLogDebug(wxT("LB_GETITEMRECT failed"));
	282	}
	283
	284	::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
	285	}
	286
	287	// send an "item checked" event
	288	void wxCheckListBoxItem::SendEvent()
	289	{
	290	wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
	291	event.SetInt(m_nIndex);
	292	event.SetEventObject(m_pParent);
	293	m_pParent->ProcessCommand(event);
	294	}
	295
	296	// ----------------------------------------------------------------------------
	297	// implementation of wxCheckListBox class
	298	// ----------------------------------------------------------------------------
	299
	300	// define event table
	301	// ------------------
	302	BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
	303	EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
	304	EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
	305	END_EVENT_TABLE()
	306
	307	// control creation
	308	// ----------------
	309
	310	// def ctor: use Create() to really create the control
	311	wxCheckListBox::wxCheckListBox()
	312	{
	313	}
	314
	315	// ctor which creates the associated control
	316	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	317	const wxPoint& pos, const wxSize& size,
	318	int nStrings, const wxString choices[],
	319	long style, const wxValidator& val,
	320	const wxString& name)
	321	{
	322	Create(parent, id, pos, size, nStrings, choices, style, val, name);
	323	}
	324
	325	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	326	const wxPoint& pos, const wxSize& size,
	327	const wxArrayString& choices,
	328	long style, const wxValidator& val,
	329	const wxString& name)
	330	{
	331	Create(parent, id, pos, size, choices, style, val, name);
	332	}
	333
	334	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	335	const wxPoint& pos, const wxSize& size,
	336	int n, const wxString choices[],
	337	long style,
	338	const wxValidator& validator, const wxString& name)
	339	{
	340	return wxListBox::Create(parent, id, pos, size, n, choices,
	341	style \| wxLB_OWNERDRAW, validator, name);
	342	}
	343
	344	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	345	const wxPoint& pos, const wxSize& size,
	346	const wxArrayString& choices,
	347	long style,
	348	const wxValidator& validator, const wxString& name)
	349	{
	350	return wxListBox::Create(parent, id, pos, size, choices,
	351	style \| wxLB_OWNERDRAW, validator, name);
	352	}
	353
	354	// misc overloaded methods
	355	// -----------------------
	356
	357	void wxCheckListBox::Delete(int N)
	358	{
	359	wxCHECK_RET( N >= 0 && N < m_noItems,
	360	wxT("invalid index in wxListBox::Delete") );
	361
	362	wxListBox::Delete(N);
	363
	364	// free memory
	365	delete m_aItems[N];
	366
	367	m_aItems.RemoveAt(N);
	368	}
	369
	370	bool wxCheckListBox::SetFont( const wxFont &font )
	371	{
	372	size_t i;
	373	for ( i = 0; i < m_aItems.GetCount(); i++ )
	374	m_aItems[i]->SetFont(font);
	375
	376	wxListBox::SetFont(font);
	377
	378	return true;
	379	}
	380
	381	// create/retrieve item
	382	// --------------------
	383
	384	// create a check list box item
	385	wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
	386	{
	387	wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
	388	return pItem;
	389	}
	390
	391	// return item size
	392	// ----------------
	393	bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
	394	{
	395	if ( wxListBox::MSWOnMeasure(item) ) {
	396	MEASUREITEMSTRUCT pStruct = (MEASUREITEMSTRUCT )item;
	397
	398	// save item height
	399	m_nItemHeight = pStruct->itemHeight;
	400
	401	// add place for the check mark
	402	pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();
	403
	404	return true;
	405	}
	406
	407	return false;
	408	}
	409
	410	// check items
	411	// -----------
	412
	413	bool wxCheckListBox::IsChecked(size_t uiIndex) const
	414	{
	415	wxCHECK_MSG( uiIndex < (size_t)GetCount(), false, _T("bad wxCheckListBox index") );
	416
	417	return GetItem(uiIndex)->IsChecked();
	418	}
	419
	420	void wxCheckListBox::Check(size_t uiIndex, bool bCheck)
	421	{
	422	wxCHECK_RET( uiIndex < (size_t)GetCount(), _T("bad wxCheckListBox index") );
	423
	424	GetItem(uiIndex)->Check(bCheck);
	425	}
	426
	427	// process events
	428	// --------------
	429
	430	void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
	431	{
	432	// what do we do?
	433	enum
	434	{
	435	None,
	436	Toggle,
	437	Set,
	438	Clear
	439	} oper;
	440
	441	switch ( event.GetKeyCode() )
	442	{
	443	case WXK_SPACE:
	444	oper = Toggle;
	445	break;
	446
	447	case WXK_NUMPAD_ADD:
	448	case '+':
	449	oper = Set;
	450	break;
	451
	452	case WXK_NUMPAD_SUBTRACT:
	453	case '-':
	454	oper = Clear;
	455	break;
	456
	457	default:
	458	oper = None;
	459	}
	460
	461	if ( oper != None )
	462	{
	463	wxArrayInt selections;
	464	int count = 0;
	465	if ( HasMultipleSelection() )
	466	{
	467	count = GetSelections(selections);
	468	}
	469	else
	470	{
	471	int sel = GetSelection();
	472	if (sel != -1)
	473	{
	474	count = 1;
	475	selections.Add(sel);
	476	}
	477	}
	478
	479	for ( int i = 0; i < count; i++ )
	480	{
	481	wxCheckListBoxItem *item = GetItem(selections[i]);
	482	if ( !item )
	483	{
	484	wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
	485	continue;
	486	}
	487
	488	switch ( oper )
	489	{
	490	case Toggle:
	491	item->Toggle();
	492	break;
	493
	494	case Set:
	495	case Clear:
	496	item->Check( oper == Set );
	497	break;
	498
	499	default:
	500	wxFAIL_MSG( _T("what should this key do?") );
	501	}
	502
	503	// we should send an event as this has been done by the user and
	504	// not by the program
	505	item->SendEvent();
	506	}
	507	}
	508	else // nothing to do
	509	{
	510	event.Skip();
	511	}
	512	}
	513
	514	void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
	515	{
	516	// clicking on the item selects it, clicking on the checkmark toggles
	517	if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) {
	518	int nItem = HitTest(event.GetX(), event.GetY());
	519
	520	if ( nItem != wxNOT_FOUND ) {
	521	wxCheckListBoxItem *item = GetItem(nItem);
	522	item->Toggle();
	523	item->SendEvent();
	524	}
	525	//else: it's not an error, just click outside of client zone
	526	}
	527	else {
	528	// implement default behaviour: clicking on the item selects it
	529	event.Skip();
	530	}
	531	}
	532
	533	int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
	534	{
	535	int nItem = (int)::SendMessage
	536	(
	537	(HWND)GetHWND(),
	538	LB_ITEMFROMPOINT,
	539	0,
	540	MAKELPARAM(x, y)
	541	);
	542
	543	return nItem >= m_noItems ? wxNOT_FOUND : nItem;
	544	}
	545
	546
	547	wxSize wxCheckListBox::DoGetBestSize() const
	548	{
	549	wxSize best = wxListBox::DoGetBestSize();
	550	best.x += wxOwnerDrawn::GetDefaultMarginWidth(); // add room for the checkbox
	551	CacheBestSize(best);
	552	return best;
	553	}
	554
	555	#endif
	556