src/msw/checklst.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/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
// ----------------------------------------------------------------------------

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN

#include "wx/checklst.h"

#ifndef WX_PRECOMP
    #include "wx/msw/wrapcctl.h"
    #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 <windowsx.h>

#include "wx/renderer.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:
    bool            m_bChecked;
    wxCheckListBox *m_pParent;
    size_t          m_nIndex;

    DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
};

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

    SetMarginWidth(::GetSystemMetrics(SM_CXMENUCHECK) - 2);

    SetBackgroundColour(pParent->GetBackgroundColour());
}

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

    if ( !wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) )
        return false;

    // now draw the check mark part
    HDC hdc = GetHdcOf(dc);

    int nBmpWidth  = ::GetSystemMetrics(SM_CXMENUCHECK),
        nBmpHeight = ::GetSystemMetrics(SM_CYMENUCHECK);


    // first create bitmap in a memory DC
    MemoryHDC hdcMem(hdc);
    CompatibleBitmap hBmpCheck(hdc, nBmpWidth, nBmpHeight);

    // then draw a check mark into it
    {
        SelectInHDC selBmp(hdcMem, hBmpCheck);

        int flags = wxCONTROL_FLAT;
        if ( IsChecked() )
            flags |= wxCONTROL_CHECKED;

        wxDCTemp dcMem(hdcMem);
        wxRendererNative::Get().DrawCheckBox(
                m_pParent, dcMem, wxRect(0, 0, nBmpWidth, nBmpHeight), flags);
    } // select hBmpCheck out of hdcMem

    // shift check mark 2 pixel to the right and bottom, looks better like this
    int x = rc.GetX() + 2,
        y = rc.GetY() + 2;

    // finally draw bitmap to screen: uses image list functions to blend
    // the bitmap with the background colour (better for the selected items)
    HIMAGELIST himl = ImageList_Create(nBmpWidth, nBmpHeight,
                                       ILC_COLOR32 | ILC_MASK, 1, 1);
    ImageList_Add(himl, hBmpCheck, NULL);

    UINT fStyle = stat & wxOwnerDrawn::wxODSelected ? ILD_SELECTED : ILD_NORMAL;
    ImageList_Draw(himl, 0, hdc, x, y, fStyle);

    ImageList_Destroy(himl);

    return true;
}

// 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);
    event.SetString(m_pParent->GetString(m_nIndex));
    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(unsigned int n)
{
    wxCHECK_RET( IsValid(n),
                 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 )
{
    unsigned int 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;

    // add place for the check mark
    pStruct->itemWidth  += wxOwnerDrawn::GetDefaultMarginWidth();
    pStruct->itemHeight += 1;

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

    return true;
  }

  return false;
}

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

bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
{
    wxCHECK_MSG( IsValid(uiIndex), false, _T("bad wxCheckListBox index") );

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

void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
{
    wxCHECK_RET( IsValid(uiIndex), _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 >= (int)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: src/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	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN
	28
	29	#include "wx/checklst.h"
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/msw/wrapcctl.h"
	33	#include "wx/object.h"
	34	#include "wx/colour.h"
	35	#include "wx/font.h"
	36	#include "wx/bitmap.h"
	37	#include "wx/window.h"
	38	#include "wx/listbox.h"
	39	#include "wx/dcmemory.h"
	40	#include "wx/settings.h"
	41	#include "wx/log.h"
	42	#endif
	43
	44	#include "wx/ownerdrw.h"
	45
	46	#include <windowsx.h>
	47
	48	#include "wx/renderer.h"
	49	#include "wx/msw/private.h"
	50
	51	// ----------------------------------------------------------------------------
	52	// private functions
	53	// ----------------------------------------------------------------------------
	54
	55	// get item (converted to right type)
	56	#define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n)))
	57
	58	// ============================================================================
	59	// implementation
	60	// ============================================================================
	61
	62
	63	#if wxUSE_EXTENDED_RTTI
	64	WX_DEFINE_FLAGS( wxCheckListBoxStyle )
	65
	66	wxBEGIN_FLAGS( wxCheckListBoxStyle )
	67	// new style border flags, we put them first to
	68	// use them for streaming out
	69	wxFLAGS_MEMBER(wxBORDER_SIMPLE)
	70	wxFLAGS_MEMBER(wxBORDER_SUNKEN)
	71	wxFLAGS_MEMBER(wxBORDER_DOUBLE)
	72	wxFLAGS_MEMBER(wxBORDER_RAISED)
	73	wxFLAGS_MEMBER(wxBORDER_STATIC)
	74	wxFLAGS_MEMBER(wxBORDER_NONE)
	75
	76	// old style border flags
	77	wxFLAGS_MEMBER(wxSIMPLE_BORDER)
	78	wxFLAGS_MEMBER(wxSUNKEN_BORDER)
	79	wxFLAGS_MEMBER(wxDOUBLE_BORDER)
	80	wxFLAGS_MEMBER(wxRAISED_BORDER)
	81	wxFLAGS_MEMBER(wxSTATIC_BORDER)
	82	wxFLAGS_MEMBER(wxBORDER)
	83
	84	// standard window styles
	85	wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
	86	wxFLAGS_MEMBER(wxCLIP_CHILDREN)
	87	wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
	88	wxFLAGS_MEMBER(wxWANTS_CHARS)
	89	wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
	90	wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
	91	wxFLAGS_MEMBER(wxVSCROLL)
	92	wxFLAGS_MEMBER(wxHSCROLL)
	93
	94	wxFLAGS_MEMBER(wxLB_SINGLE)
	95	wxFLAGS_MEMBER(wxLB_MULTIPLE)
	96	wxFLAGS_MEMBER(wxLB_EXTENDED)
	97	wxFLAGS_MEMBER(wxLB_HSCROLL)
	98	wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
	99	wxFLAGS_MEMBER(wxLB_NEEDED_SB)
	100	wxFLAGS_MEMBER(wxLB_SORT)
	101	wxFLAGS_MEMBER(wxLB_OWNERDRAW)
	102
	103	wxEND_FLAGS( wxCheckListBoxStyle )
	104
	105	IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")
	106
	107	wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
	108	wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
	109	wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /flags/ , wxT("Helpstring") , wxT("group")) // style
	110	wxEND_PROPERTIES_TABLE()
	111
	112	wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
	113	wxEND_HANDLERS_TABLE()
	114
	115	wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
	116
	117	#else
	118	IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
	119	#endif
	120
	121	// ----------------------------------------------------------------------------
	122	// declaration and implementation of wxCheckListBoxItem class
	123	// ----------------------------------------------------------------------------
	124
	125	class wxCheckListBoxItem : public wxOwnerDrawn
	126	{
	127	friend class WXDLLEXPORT wxCheckListBox;
	128	public:
	129	// ctor
	130	wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);
	131
	132	// drawing functions
	133	virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);
	134
	135	// simple accessors and operations
	136	bool IsChecked() const { return m_bChecked; }
	137
	138	void Check(bool bCheck);
	139	void Toggle() { Check(!IsChecked()); }
	140
	141	void SendEvent();
	142
	143	private:
	144	bool m_bChecked;
	145	wxCheckListBox *m_pParent;
	146	size_t m_nIndex;
	147
	148	DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
	149	};
	150
	151	wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
	152	: wxOwnerDrawn(wxEmptyString, true) // checkable
	153	{
	154	m_bChecked = false;
	155	m_pParent = pParent;
	156	m_nIndex = nIndex;
	157
	158	// we don't initialize m_nCheckHeight/Width vars because it's
	159	// done in OnMeasure while they are used only in OnDraw and we
	160	// know that there will always be OnMeasure before OnDraw
	161
	162	SetMarginWidth(::GetSystemMetrics(SM_CXMENUCHECK) - 2);
	163
	164	SetBackgroundColour(pParent->GetBackgroundColour());
	165	}
	166
	167	bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
	168	wxODAction act, wxODStatus stat)
	169	{
	170	// first draw the label
	171	if ( IsChecked() )
	172	stat = (wxOwnerDrawn::wxODStatus)(stat \| wxOwnerDrawn::wxODChecked);
	173
	174	if ( !wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) )
	175	return false;
	176
	177	// now draw the check mark part
	178	HDC hdc = GetHdcOf(dc);
	179
	180	int nBmpWidth = ::GetSystemMetrics(SM_CXMENUCHECK),
	181	nBmpHeight = ::GetSystemMetrics(SM_CYMENUCHECK);
	182
	183
	184	// first create bitmap in a memory DC
	185	MemoryHDC hdcMem(hdc);
	186	CompatibleBitmap hBmpCheck(hdc, nBmpWidth, nBmpHeight);
	187
	188	// then draw a check mark into it
	189	{
	190	SelectInHDC selBmp(hdcMem, hBmpCheck);
	191
	192	int flags = wxCONTROL_FLAT;
	193	if ( IsChecked() )
	194	flags \|= wxCONTROL_CHECKED;
	195
	196	wxDCTemp dcMem(hdcMem);
	197	wxRendererNative::Get().DrawCheckBox(
	198	m_pParent, dcMem, wxRect(0, 0, nBmpWidth, nBmpHeight), flags);
	199	} // select hBmpCheck out of hdcMem
	200
	201	// shift check mark 2 pixel to the right and bottom, looks better like this
	202	int x = rc.GetX() + 2,
	203	y = rc.GetY() + 2;
	204
	205	// finally draw bitmap to screen: uses image list functions to blend
	206	// the bitmap with the background colour (better for the selected items)
	207	HIMAGELIST himl = ImageList_Create(nBmpWidth, nBmpHeight,
	208	ILC_COLOR32 \| ILC_MASK, 1, 1);
	209	ImageList_Add(himl, hBmpCheck, NULL);
	210
	211	UINT fStyle = stat & wxOwnerDrawn::wxODSelected ? ILD_SELECTED : ILD_NORMAL;
	212	ImageList_Draw(himl, 0, hdc, x, y, fStyle);
	213
	214	ImageList_Destroy(himl);
	215
	216	return true;
	217	}
	218
	219	// change the state of the item and redraw it
	220	void wxCheckListBoxItem::Check(bool check)
	221	{
	222	m_bChecked = check;
	223
	224	// index may be changed because new items were added/deleted
	225	if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
	226	{
	227	// update it
	228	int index = m_pParent->GetItemIndex(this);
	229
	230	wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );
	231
	232	m_nIndex = (size_t)index;
	233	}
	234
	235	HWND hwndListbox = (HWND)m_pParent->GetHWND();
	236
	237	RECT rcUpdate;
	238
	239	if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
	240	m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
	241	{
	242	wxLogDebug(wxT("LB_GETITEMRECT failed"));
	243	}
	244
	245	::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
	246	}
	247
	248	// send an "item checked" event
	249	void wxCheckListBoxItem::SendEvent()
	250	{
	251	wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
	252	event.SetInt(m_nIndex);
	253	event.SetEventObject(m_pParent);
	254	event.SetString(m_pParent->GetString(m_nIndex));
	255	m_pParent->ProcessCommand(event);
	256	}
	257
	258	// ----------------------------------------------------------------------------
	259	// implementation of wxCheckListBox class
	260	// ----------------------------------------------------------------------------
	261
	262	// define event table
	263	// ------------------
	264	BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
	265	EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
	266	EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
	267	END_EVENT_TABLE()
	268
	269	// control creation
	270	// ----------------
	271
	272	// def ctor: use Create() to really create the control
	273	wxCheckListBox::wxCheckListBox()
	274	{
	275	}
	276
	277	// ctor which creates the associated control
	278	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	279	const wxPoint& pos, const wxSize& size,
	280	int nStrings, const wxString choices[],
	281	long style, const wxValidator& val,
	282	const wxString& name)
	283	{
	284	Create(parent, id, pos, size, nStrings, choices, style, val, name);
	285	}
	286
	287	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	288	const wxPoint& pos, const wxSize& size,
	289	const wxArrayString& choices,
	290	long style, const wxValidator& val,
	291	const wxString& name)
	292	{
	293	Create(parent, id, pos, size, choices, style, val, name);
	294	}
	295
	296	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	297	const wxPoint& pos, const wxSize& size,
	298	int n, const wxString choices[],
	299	long style,
	300	const wxValidator& validator, const wxString& name)
	301	{
	302	return wxListBox::Create(parent, id, pos, size, n, choices,
	303	style \| wxLB_OWNERDRAW, validator, name);
	304	}
	305
	306	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	307	const wxPoint& pos, const wxSize& size,
	308	const wxArrayString& choices,
	309	long style,
	310	const wxValidator& validator, const wxString& name)
	311	{
	312	return wxListBox::Create(parent, id, pos, size, choices,
	313	style \| wxLB_OWNERDRAW, validator, name);
	314	}
	315
	316	// misc overloaded methods
	317	// -----------------------
	318
	319	void wxCheckListBox::Delete(unsigned int n)
	320	{
	321	wxCHECK_RET( IsValid(n),
	322	wxT("invalid index in wxListBox::Delete") );
	323
	324	wxListBox::Delete(n);
	325
	326	// free memory
	327	delete m_aItems[n];
	328
	329	m_aItems.RemoveAt(n);
	330	}
	331
	332	bool wxCheckListBox::SetFont( const wxFont &font )
	333	{
	334	unsigned int i;
	335	for ( i = 0; i < m_aItems.GetCount(); i++ )
	336	m_aItems[i]->SetFont(font);
	337
	338	wxListBox::SetFont(font);
	339
	340	return true;
	341	}
	342
	343	// create/retrieve item
	344	// --------------------
	345
	346	// create a check list box item
	347	wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
	348	{
	349	wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
	350	return pItem;
	351	}
	352
	353	// return item size
	354	// ----------------
	355	bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
	356	{
	357	if ( wxListBox::MSWOnMeasure(item) ) {
	358	MEASUREITEMSTRUCT pStruct = (MEASUREITEMSTRUCT )item;
	359
	360	// add place for the check mark
	361	pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();
	362	pStruct->itemHeight += 1;
	363
	364	// save item height
	365	m_nItemHeight = pStruct->itemHeight;
	366
	367	return true;
	368	}
	369
	370	return false;
	371	}
	372
	373	// check items
	374	// -----------
	375
	376	bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
	377	{
	378	wxCHECK_MSG( IsValid(uiIndex), false, _T("bad wxCheckListBox index") );
	379
	380	return GetItem(uiIndex)->IsChecked();
	381	}
	382
	383	void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
	384	{
	385	wxCHECK_RET( IsValid(uiIndex), _T("bad wxCheckListBox index") );
	386
	387	GetItem(uiIndex)->Check(bCheck);
	388	}
	389
	390	// process events
	391	// --------------
	392
	393	void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
	394	{
	395	// what do we do?
	396	enum
	397	{
	398	None,
	399	Toggle,
	400	Set,
	401	Clear
	402	} oper;
	403
	404	switch ( event.GetKeyCode() )
	405	{
	406	case WXK_SPACE:
	407	oper = Toggle;
	408	break;
	409
	410	case WXK_NUMPAD_ADD:
	411	case '+':
	412	oper = Set;
	413	break;
	414
	415	case WXK_NUMPAD_SUBTRACT:
	416	case '-':
	417	oper = Clear;
	418	break;
	419
	420	default:
	421	oper = None;
	422	}
	423
	424	if ( oper != None )
	425	{
	426	wxArrayInt selections;
	427	int count = 0;
	428	if ( HasMultipleSelection() )
	429	{
	430	count = GetSelections(selections);
	431	}
	432	else
	433	{
	434	int sel = GetSelection();
	435	if (sel != -1)
	436	{
	437	count = 1;
	438	selections.Add(sel);
	439	}
	440	}
	441
	442	for ( int i = 0; i < count; i++ )
	443	{
	444	wxCheckListBoxItem *item = GetItem(selections[i]);
	445	if ( !item )
	446	{
	447	wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
	448	continue;
	449	}
	450
	451	switch ( oper )
	452	{
	453	case Toggle:
	454	item->Toggle();
	455	break;
	456
	457	case Set:
	458	case Clear:
	459	item->Check( oper == Set );
	460	break;
	461
	462	default:
	463	wxFAIL_MSG( _T("what should this key do?") );
	464	}
	465
	466	// we should send an event as this has been done by the user and
	467	// not by the program
	468	item->SendEvent();
	469	}
	470	}
	471	else // nothing to do
	472	{
	473	event.Skip();
	474	}
	475	}
	476
	477	void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
	478	{
	479	// clicking on the item selects it, clicking on the checkmark toggles
	480	if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() )
	481	{
	482	int nItem = HitTest(event.GetX(), event.GetY());
	483
	484	if ( nItem != wxNOT_FOUND )
	485	{
	486	wxCheckListBoxItem *item = GetItem(nItem);
	487	item->Toggle();
	488	item->SendEvent();
	489	}
	490	//else: it's not an error, just click outside of client zone
	491	}
	492	else
	493	{
	494	// implement default behaviour: clicking on the item selects it
	495	event.Skip();
	496	}
	497	}
	498
	499	int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
	500	{
	501	int nItem = (int)::SendMessage
	502	(
	503	(HWND)GetHWND(),
	504	LB_ITEMFROMPOINT,
	505	0,
	506	MAKELPARAM(x, y)
	507	);
	508
	509	return nItem >= (int)m_noItems ? wxNOT_FOUND : nItem;
	510	}
	511
	512
	513	wxSize wxCheckListBox::DoGetBestSize() const
	514	{
	515	wxSize best = wxListBox::DoGetBestSize();
	516	best.x += wxOwnerDrawn::GetDefaultMarginWidth(); // add room for the checkbox
	517	CacheBestSize(best);
	518	return best;
	519	}
	520
	521	#endif