src/msw/dragimag.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dragimag.cpp
// Purpose:     wxDragImage
// Author:      Julian Smart
// Modified by:
// Created:     08/04/99
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

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

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

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_DRAGIMAGE

#if defined(__WIN95__)

#ifndef WX_PRECOMP
#include <stdio.h>
#include "wx/setup.h"
#include "wx/window.h"
#include "wx/dcclient.h"
#include "wx/dcscreen.h"
#include "wx/dcmemory.h"
#include "wx/settings.h"
#endif

#include "wx/msw/private.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/frame.h"
#include "wx/image.h"

#include "wx/msw/dragimag.h"
#include "wx/msw/private.h"

#ifdef __WXWINCE__  // for SM_CXCURSOR and SM_CYCURSOR
#include "wx/msw/wince/missing.h"
#endif // __WXWINCE__

#if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
#include <commctrl.h>
#endif

// Wine doesn't have this yet
#ifndef ListView_CreateDragImage
#define ListView_CreateDragImage(hwnd, i, lpptUpLeft) \
    (HIMAGELIST)SNDMSG((hwnd), LVM_CREATEDRAGIMAGE, (WPARAM)(int)(i), (LPARAM)(LPPOINT)(lpptUpLeft))
#endif

// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxDragImage, wxObject)

#define GetHimageList() ((HIMAGELIST) m_hImageList)

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

// ----------------------------------------------------------------------------
// wxDragImage ctors/dtor
// ----------------------------------------------------------------------------

wxDragImage::wxDragImage()
{
    Init();
}

wxDragImage::~wxDragImage()
{
    if ( m_hImageList )
        ImageList_Destroy(GetHimageList());
#if !wxUSE_SIMPLER_DRAGIMAGE
    if ( m_hCursorImageList )
        ImageList_Destroy((HIMAGELIST) m_hCursorImageList);
#endif
}

void wxDragImage::Init()
{
    m_hImageList = 0;
#if !wxUSE_SIMPLER_DRAGIMAGE
    m_hCursorImageList = 0;
#endif
    m_window = (wxWindow*) NULL;
    m_fullScreen = false;
}

// Attributes
////////////////////////////////////////////////////////////////////////////


// Operations
////////////////////////////////////////////////////////////////////////////

// Create a drag image from a bitmap and optional cursor
bool wxDragImage::Create(const wxBitmap& image, const wxCursor& cursor)
{
    if ( m_hImageList )
        ImageList_Destroy(GetHimageList());
    m_hImageList = 0;

#ifdef __WXWINCE__
    UINT flags = ILC_COLOR;
#else
    UINT flags wxDUMMY_INITIALIZE(0) ;
    if (image.GetDepth() <= 4)
        flags = ILC_COLOR4;
    else if (image.GetDepth() <= 8)
        flags = ILC_COLOR8;
    else if (image.GetDepth() <= 16)
        flags = ILC_COLOR16;
    else if (image.GetDepth() <= 24)
        flags = ILC_COLOR24;
    else
        flags = ILC_COLOR32;
#endif

    bool mask = (image.GetMask() != 0);

    // Curiously, even if the image doesn't have a mask,
    // we still have to use ILC_MASK or the image won't show
    // up when dragged.
//    if ( mask )
    flags |= ILC_MASK;

    m_hImageList = (WXHIMAGELIST) ImageList_Create(image.GetWidth(), image.GetHeight(), flags, 1, 1);

    int index;
    if (!mask)
    {
        HBITMAP hBitmap1 = (HBITMAP) image.GetHBITMAP();
        index = ImageList_Add(GetHimageList(), hBitmap1, 0);
    }
    else
    {
        HBITMAP hBitmap1 = (HBITMAP) image.GetHBITMAP();
        HBITMAP hBitmap2 = (HBITMAP) image.GetMask()->GetMaskBitmap();
        HBITMAP hbmpMask = wxInvertMask(hBitmap2);

        index = ImageList_Add(GetHimageList(), hBitmap1, hbmpMask);
        ::DeleteObject(hbmpMask);
    }
    if ( index == -1 )
    {
        wxLogError(_("Couldn't add an image to the image list."));
    }
    m_cursor = cursor; // Can only combine with drag image after calling BeginDrag.

    return (index != -1) ;
}

// Create a drag image from an icon and optional cursor
bool wxDragImage::Create(const wxIcon& image, const wxCursor& cursor)
{
    if ( m_hImageList )
        ImageList_Destroy(GetHimageList());
    m_hImageList = 0;

#ifdef __WXWINCE__
    UINT flags = ILC_COLOR;
#else
    UINT flags wxDUMMY_INITIALIZE(0) ;
    if (image.GetDepth() <= 4)
        flags = ILC_COLOR4;
    else if (image.GetDepth() <= 8)
        flags = ILC_COLOR8;
    else if (image.GetDepth() <= 16)
        flags = ILC_COLOR16;
    else if (image.GetDepth() <= 24)
        flags = ILC_COLOR24;
    else
        flags = ILC_COLOR32;
#endif
    bool mask = true;
    if ( mask )
        flags |= ILC_MASK;

    m_hImageList = (WXHIMAGELIST) ImageList_Create(image.GetWidth(), image.GetHeight(), flags, 1, 1);

    HICON hIcon = (HICON) image.GetHICON();

    int index = ImageList_AddIcon(GetHimageList(), hIcon);
    if ( index == -1 )
    {
        wxLogError(_("Couldn't add an image to the image list."));
    }

    m_cursor = cursor; // Can only combine with drag image after calling BeginDrag.

    return (index != -1) ;
}

// Create a drag image from a string and optional cursor
bool wxDragImage::Create(const wxString& str, const wxCursor& cursor)
{
    wxFont font(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

    long w, h;
    wxScreenDC dc;
    dc.SetFont(font);
    dc.GetTextExtent(str, & w, & h);
    dc.SetFont(wxNullFont);

    wxMemoryDC dc2;
    dc2.SetFont(font);
    wxBitmap bitmap((int) w+2, (int) h+2);
    dc2.SelectObject(bitmap);

    dc2.SetBackground(* wxWHITE_BRUSH);
    dc2.Clear();
    dc2.SetBackgroundMode(wxTRANSPARENT);
    dc2.SetTextForeground(* wxLIGHT_GREY);
    dc2.DrawText(str, 0, 0);
    dc2.DrawText(str, 1, 0);
    dc2.DrawText(str, 2, 0);
    dc2.DrawText(str, 1, 1);
    dc2.DrawText(str, 2, 1);
    dc2.DrawText(str, 1, 2);
    dc2.DrawText(str, 2, 2);
    dc2.SetTextForeground(* wxBLACK);
    dc2.DrawText(str, 1, 1);

    dc2.SelectObject(wxNullBitmap);

    // Make the bitmap masked
    wxImage image = bitmap.ConvertToImage();
    image.SetMaskColour(255, 255, 255);
    return Create(wxBitmap(image), cursor);
}

#if wxUSE_TREECTRL
// Create a drag image for the given tree control item
bool wxDragImage::Create(const wxTreeCtrl& treeCtrl, wxTreeItemId& id)
{
    if ( m_hImageList )
        ImageList_Destroy(GetHimageList());
    m_hImageList = (WXHIMAGELIST)
        TreeView_CreateDragImage(GetHwndOf(&treeCtrl), (HTREEITEM) id.m_pItem);
    return m_hImageList != 0;
}
#endif

#if wxUSE_LISTCTRL
// Create a drag image for the given list control item
bool wxDragImage::Create(const wxListCtrl& listCtrl, long id)
{
    if ( m_hImageList )
        ImageList_Destroy(GetHimageList());
    POINT pt;
    pt.x = 0; pt.y = 0;
    m_hImageList = (WXHIMAGELIST) ListView_CreateDragImage((HWND) listCtrl.GetHWND(), id, & pt);
    return true;
}
#endif

// Begin drag
bool wxDragImage::BeginDrag(const wxPoint& hotspot, wxWindow* window, bool fullScreen, wxRect* rect)
{
    wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in BeginDrag."));
    wxASSERT_MSG( (window != 0), wxT("Window must not be null in BeginDrag."));

    m_fullScreen = fullScreen;
    if (rect)
        m_boundingRect = * rect;

    bool ret = (ImageList_BeginDrag(GetHimageList(), 0, hotspot.x, hotspot.y) != 0);

    if (!ret)
    {
        wxFAIL_MSG( _T("BeginDrag failed.") );

        return false;
    }

    if (m_cursor.Ok())
    {
#if wxUSE_SIMPLER_DRAGIMAGE
        m_oldCursor = window->GetCursor();
        window->SetCursor(m_cursor);
#else
        if (!m_hCursorImageList)
        {
            int cxCursor = ::GetSystemMetrics(SM_CXCURSOR);
            int cyCursor = ::GetSystemMetrics(SM_CYCURSOR);

            m_hCursorImageList = (WXHIMAGELIST) ImageList_Create(cxCursor, cyCursor, ILC_MASK, 1, 1);
        }

        // See if we can find the cursor hotspot
        wxPoint curHotSpot(hotspot);

        // Although it seems to produce the right position, when the hotspot goeos
        // negative it has strange effects on the image.
        // How do we stop the cursor jumping right and below of where it should be?
#if 0
        ICONINFO iconInfo;
        if (::GetIconInfo((HICON) (HCURSOR) m_cursor.GetHCURSOR(), & iconInfo) != 0)
        {
            curHotSpot.x -= iconInfo.xHotspot;
            curHotSpot.y -= iconInfo.yHotspot;
        }
#endif
        //wxString msg;
        //msg.Printf("Hotspot = %d, %d", curHotSpot.x, curHotSpot.y);
        //wxLogDebug(msg);

        // First add the cursor to the image list
        HCURSOR hCursor = (HCURSOR) m_cursor.GetHCURSOR();
        int cursorIndex = ImageList_AddIcon((HIMAGELIST) m_hCursorImageList, (HICON) hCursor);

        wxASSERT_MSG( (cursorIndex != -1), wxT("ImageList_AddIcon failed in BeginDrag."));

        if (cursorIndex != -1)
        {
            ImageList_SetDragCursorImage((HIMAGELIST) m_hCursorImageList, cursorIndex, curHotSpot.x, curHotSpot.y);
        }
#endif
    }

#if !wxUSE_SIMPLER_DRAGIMAGE
    if (m_cursor.Ok())
        ::ShowCursor(FALSE);
#endif

    m_window = window;

    ::SetCapture(GetHwndOf(window));

    return true;
}

// Begin drag. hotspot is the location of the drag position relative to the upper-left
// corner of the image. This is full screen only. fullScreenRect gives the
// position of the window on the screen, to restrict the drag to.
bool wxDragImage::BeginDrag(const wxPoint& hotspot, wxWindow* window, wxWindow* fullScreenRect)
{
    wxRect rect;

    int x = fullScreenRect->GetPosition().x;
    int y = fullScreenRect->GetPosition().y;

    wxSize sz = fullScreenRect->GetSize();

    if (fullScreenRect->GetParent() && !fullScreenRect->IsKindOf(CLASSINFO(wxFrame)))
        fullScreenRect->GetParent()->ClientToScreen(& x, & y);

    rect.x = x; rect.y = y;
    rect.width = sz.x; rect.height = sz.y;

    return BeginDrag(hotspot, window, true, & rect);
}

// End drag
bool wxDragImage::EndDrag()
{
    wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in EndDrag."));

    ImageList_EndDrag();

    if ( !::ReleaseCapture() )
    {
        wxLogLastError(wxT("ReleaseCapture"));
    }

#if wxUSE_SIMPLER_DRAGIMAGE
    if (m_cursor.Ok() && m_oldCursor.Ok())
        m_window->SetCursor(m_oldCursor);
#else
    ::ShowCursor(TRUE);
#endif

    m_window = (wxWindow*) NULL;

    return true;
}

// Move the image: call from OnMouseMove. Pt is in window client coordinates if window
// is non-NULL, or in screen coordinates if NULL.
bool wxDragImage::Move(const wxPoint& pt)
{
    wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Move."));

    // These are in window, not client coordinates.
    // So need to convert to client coordinates.
    wxPoint pt2(pt);
    if (m_window && !m_fullScreen)
    {
        RECT rect;
        rect.left = 0; rect.top = 0;
        rect.right = 0; rect.bottom = 0;
        DWORD style = ::GetWindowLong((HWND) m_window->GetHWND(), GWL_STYLE);
#ifdef __WIN32__
        DWORD exStyle = ::GetWindowLong((HWND) m_window->GetHWND(), GWL_EXSTYLE);
        ::AdjustWindowRectEx(& rect, style, FALSE, exStyle);
#else
        ::AdjustWindowRect(& rect, style, FALSE);
#endif
        // Subtract the (negative) values, i.e. add a small increment
        pt2.x -= rect.left; pt2.y -= rect.top;
    }
    else if (m_window && m_fullScreen)
    {
        pt2 = m_window->ClientToScreen(pt2);
    }

    bool ret = (ImageList_DragMove( pt2.x, pt2.y ) != 0);

    m_position = pt2;

    return ret;
}

bool wxDragImage::Show()
{
    wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Show."));

    HWND hWnd = 0;
    if (m_window && !m_fullScreen)
        hWnd = (HWND) m_window->GetHWND();

    bool ret = (ImageList_DragEnter( hWnd, m_position.x, m_position.y ) != 0);

    return ret;
}

bool wxDragImage::Hide()
{
    wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Hide."));

    HWND hWnd = 0;
    if (m_window && !m_fullScreen)
        hWnd = (HWND) m_window->GetHWND();

    bool ret = (ImageList_DragLeave( hWnd ) != 0);

    return ret;
}

#endif
    // __WIN95__

#endif // wxUSE_DRAGIMAGE
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dragimag.cpp
	3	// Purpose: wxDragImage
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 08/04/99
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	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_DRAGIMAGE
	28
	29	#if defined(__WIN95__)
	30
	31	#ifndef WX_PRECOMP
	32	#include <stdio.h>
	33	#include "wx/setup.h"
	34	#include "wx/window.h"
	35	#include "wx/dcclient.h"
	36	#include "wx/dcscreen.h"
	37	#include "wx/dcmemory.h"
	38	#include "wx/settings.h"
	39	#endif
	40
	41	#include "wx/msw/private.h"
	42	#include "wx/log.h"
	43	#include "wx/intl.h"
	44	#include "wx/frame.h"
	45	#include "wx/image.h"
	46
	47	#include "wx/msw/dragimag.h"
	48	#include "wx/msw/private.h"
	49
	50	#ifdef __WXWINCE__ // for SM_CXCURSOR and SM_CYCURSOR
	51	#include "wx/msw/wince/missing.h"
	52	#endif // __WXWINCE__
	53
	54	#if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
	55	#include <commctrl.h>
	56	#endif
	57
	58	// Wine doesn't have this yet
	59	#ifndef ListView_CreateDragImage
	60	#define ListView_CreateDragImage(hwnd, i, lpptUpLeft) \
	61	(HIMAGELIST)SNDMSG((hwnd), LVM_CREATEDRAGIMAGE, (WPARAM)(int)(i), (LPARAM)(LPPOINT)(lpptUpLeft))
	62	#endif
	63
	64	// ----------------------------------------------------------------------------
	65	// macros
	66	// ----------------------------------------------------------------------------
	67
	68	IMPLEMENT_DYNAMIC_CLASS(wxDragImage, wxObject)
	69
	70	#define GetHimageList() ((HIMAGELIST) m_hImageList)
	71
	72	// ============================================================================
	73	// implementation
	74	// ============================================================================
	75
	76	// ----------------------------------------------------------------------------
	77	// wxDragImage ctors/dtor
	78	// ----------------------------------------------------------------------------
	79
	80	wxDragImage::wxDragImage()
	81	{
	82	Init();
	83	}
	84
	85	wxDragImage::~wxDragImage()
	86	{
	87	if ( m_hImageList )
	88	ImageList_Destroy(GetHimageList());
	89	#if !wxUSE_SIMPLER_DRAGIMAGE
	90	if ( m_hCursorImageList )
	91	ImageList_Destroy((HIMAGELIST) m_hCursorImageList);
	92	#endif
	93	}
	94
	95	void wxDragImage::Init()
	96	{
	97	m_hImageList = 0;
	98	#if !wxUSE_SIMPLER_DRAGIMAGE
	99	m_hCursorImageList = 0;
	100	#endif
	101	m_window = (wxWindow*) NULL;
	102	m_fullScreen = false;
	103	}
	104
	105	// Attributes
	106	////////////////////////////////////////////////////////////////////////////
	107
	108
	109	// Operations
	110	////////////////////////////////////////////////////////////////////////////
	111
	112	// Create a drag image from a bitmap and optional cursor
	113	bool wxDragImage::Create(const wxBitmap& image, const wxCursor& cursor)
	114	{
	115	if ( m_hImageList )
	116	ImageList_Destroy(GetHimageList());
	117	m_hImageList = 0;
	118
	119	#ifdef __WXWINCE__
	120	UINT flags = ILC_COLOR;
	121	#else
	122	UINT flags wxDUMMY_INITIALIZE(0) ;
	123	if (image.GetDepth() <= 4)
	124	flags = ILC_COLOR4;
	125	else if (image.GetDepth() <= 8)
	126	flags = ILC_COLOR8;
	127	else if (image.GetDepth() <= 16)
	128	flags = ILC_COLOR16;
	129	else if (image.GetDepth() <= 24)
	130	flags = ILC_COLOR24;
	131	else
	132	flags = ILC_COLOR32;
	133	#endif
	134
	135	bool mask = (image.GetMask() != 0);
	136
	137	// Curiously, even if the image doesn't have a mask,
	138	// we still have to use ILC_MASK or the image won't show
	139	// up when dragged.
	140	// if ( mask )
	141	flags \|= ILC_MASK;
	142
	143	m_hImageList = (WXHIMAGELIST) ImageList_Create(image.GetWidth(), image.GetHeight(), flags, 1, 1);
	144
	145	int index;
	146	if (!mask)
	147	{
	148	HBITMAP hBitmap1 = (HBITMAP) image.GetHBITMAP();
	149	index = ImageList_Add(GetHimageList(), hBitmap1, 0);
	150	}
	151	else
	152	{
	153	HBITMAP hBitmap1 = (HBITMAP) image.GetHBITMAP();
	154	HBITMAP hBitmap2 = (HBITMAP) image.GetMask()->GetMaskBitmap();
	155	HBITMAP hbmpMask = wxInvertMask(hBitmap2);
	156
	157	index = ImageList_Add(GetHimageList(), hBitmap1, hbmpMask);
	158	::DeleteObject(hbmpMask);
	159	}
	160	if ( index == -1 )
	161	{
	162	wxLogError(_("Couldn't add an image to the image list."));
	163	}
	164	m_cursor = cursor; // Can only combine with drag image after calling BeginDrag.
	165
	166	return (index != -1) ;
	167	}
	168
	169	// Create a drag image from an icon and optional cursor
	170	bool wxDragImage::Create(const wxIcon& image, const wxCursor& cursor)
	171	{
	172	if ( m_hImageList )
	173	ImageList_Destroy(GetHimageList());
	174	m_hImageList = 0;
	175
	176	#ifdef __WXWINCE__
	177	UINT flags = ILC_COLOR;
	178	#else
	179	UINT flags wxDUMMY_INITIALIZE(0) ;
	180	if (image.GetDepth() <= 4)
	181	flags = ILC_COLOR4;
	182	else if (image.GetDepth() <= 8)
	183	flags = ILC_COLOR8;
	184	else if (image.GetDepth() <= 16)
	185	flags = ILC_COLOR16;
	186	else if (image.GetDepth() <= 24)
	187	flags = ILC_COLOR24;
	188	else
	189	flags = ILC_COLOR32;
	190	#endif
	191	bool mask = true;
	192	if ( mask )
	193	flags \|= ILC_MASK;
	194
	195	m_hImageList = (WXHIMAGELIST) ImageList_Create(image.GetWidth(), image.GetHeight(), flags, 1, 1);
	196
	197	HICON hIcon = (HICON) image.GetHICON();
	198
	199	int index = ImageList_AddIcon(GetHimageList(), hIcon);
	200	if ( index == -1 )
	201	{
	202	wxLogError(_("Couldn't add an image to the image list."));
	203	}
	204
	205	m_cursor = cursor; // Can only combine with drag image after calling BeginDrag.
	206
	207	return (index != -1) ;
	208	}
	209
	210	// Create a drag image from a string and optional cursor
	211	bool wxDragImage::Create(const wxString& str, const wxCursor& cursor)
	212	{
	213	wxFont font(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
	214
	215	long w, h;
	216	wxScreenDC dc;
	217	dc.SetFont(font);
	218	dc.GetTextExtent(str, & w, & h);
	219	dc.SetFont(wxNullFont);
	220
	221	wxMemoryDC dc2;
	222	dc2.SetFont(font);
	223	wxBitmap bitmap((int) w+2, (int) h+2);
	224	dc2.SelectObject(bitmap);
	225
	226	dc2.SetBackground(* wxWHITE_BRUSH);
	227	dc2.Clear();
	228	dc2.SetBackgroundMode(wxTRANSPARENT);
	229	dc2.SetTextForeground(* wxLIGHT_GREY);
	230	dc2.DrawText(str, 0, 0);
	231	dc2.DrawText(str, 1, 0);
	232	dc2.DrawText(str, 2, 0);
	233	dc2.DrawText(str, 1, 1);
	234	dc2.DrawText(str, 2, 1);
	235	dc2.DrawText(str, 1, 2);
	236	dc2.DrawText(str, 2, 2);
	237	dc2.SetTextForeground(* wxBLACK);
	238	dc2.DrawText(str, 1, 1);
	239
	240	dc2.SelectObject(wxNullBitmap);
	241
	242	// Make the bitmap masked
	243	wxImage image = bitmap.ConvertToImage();
	244	image.SetMaskColour(255, 255, 255);
	245	return Create(wxBitmap(image), cursor);
	246	}
	247
	248	#if wxUSE_TREECTRL
	249	// Create a drag image for the given tree control item
	250	bool wxDragImage::Create(const wxTreeCtrl& treeCtrl, wxTreeItemId& id)
	251	{
	252	if ( m_hImageList )
	253	ImageList_Destroy(GetHimageList());
	254	m_hImageList = (WXHIMAGELIST)
	255	TreeView_CreateDragImage(GetHwndOf(&treeCtrl), (HTREEITEM) id.m_pItem);
	256	return m_hImageList != 0;
	257	}
	258	#endif
	259
	260	#if wxUSE_LISTCTRL
	261	// Create a drag image for the given list control item
	262	bool wxDragImage::Create(const wxListCtrl& listCtrl, long id)
	263	{
	264	if ( m_hImageList )
	265	ImageList_Destroy(GetHimageList());
	266	POINT pt;
	267	pt.x = 0; pt.y = 0;
	268	m_hImageList = (WXHIMAGELIST) ListView_CreateDragImage((HWND) listCtrl.GetHWND(), id, & pt);
	269	return true;
	270	}
	271	#endif
	272
	273	// Begin drag
	274	bool wxDragImage::BeginDrag(const wxPoint& hotspot, wxWindow* window, bool fullScreen, wxRect* rect)
	275	{
	276	wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in BeginDrag."));
	277	wxASSERT_MSG( (window != 0), wxT("Window must not be null in BeginDrag."));
	278
	279	m_fullScreen = fullScreen;
	280	if (rect)
	281	m_boundingRect = * rect;
	282
	283	bool ret = (ImageList_BeginDrag(GetHimageList(), 0, hotspot.x, hotspot.y) != 0);
	284
	285	if (!ret)
	286	{
	287	wxFAIL_MSG( _T("BeginDrag failed.") );
	288
	289	return false;
	290	}
	291
	292	if (m_cursor.Ok())
	293	{
	294	#if wxUSE_SIMPLER_DRAGIMAGE
	295	m_oldCursor = window->GetCursor();
	296	window->SetCursor(m_cursor);
	297	#else
	298	if (!m_hCursorImageList)
	299	{
	300	int cxCursor = ::GetSystemMetrics(SM_CXCURSOR);
	301	int cyCursor = ::GetSystemMetrics(SM_CYCURSOR);
	302
	303	m_hCursorImageList = (WXHIMAGELIST) ImageList_Create(cxCursor, cyCursor, ILC_MASK, 1, 1);
	304	}
	305
	306	// See if we can find the cursor hotspot
	307	wxPoint curHotSpot(hotspot);
	308
	309	// Although it seems to produce the right position, when the hotspot goeos
	310	// negative it has strange effects on the image.
	311	// How do we stop the cursor jumping right and below of where it should be?
	312	#if 0
	313	ICONINFO iconInfo;
	314	if (::GetIconInfo((HICON) (HCURSOR) m_cursor.GetHCURSOR(), & iconInfo) != 0)
	315	{
	316	curHotSpot.x -= iconInfo.xHotspot;
	317	curHotSpot.y -= iconInfo.yHotspot;
	318	}
	319	#endif
	320	//wxString msg;
	321	//msg.Printf("Hotspot = %d, %d", curHotSpot.x, curHotSpot.y);
	322	//wxLogDebug(msg);
	323
	324	// First add the cursor to the image list
	325	HCURSOR hCursor = (HCURSOR) m_cursor.GetHCURSOR();
	326	int cursorIndex = ImageList_AddIcon((HIMAGELIST) m_hCursorImageList, (HICON) hCursor);
	327
	328	wxASSERT_MSG( (cursorIndex != -1), wxT("ImageList_AddIcon failed in BeginDrag."));
	329
	330	if (cursorIndex != -1)
	331	{
	332	ImageList_SetDragCursorImage((HIMAGELIST) m_hCursorImageList, cursorIndex, curHotSpot.x, curHotSpot.y);
	333	}
	334	#endif
	335	}
	336
	337	#if !wxUSE_SIMPLER_DRAGIMAGE
	338	if (m_cursor.Ok())
	339	::ShowCursor(FALSE);
	340	#endif
	341
	342	m_window = window;
	343
	344	::SetCapture(GetHwndOf(window));
	345
	346	return true;
	347	}
	348
	349	// Begin drag. hotspot is the location of the drag position relative to the upper-left
	350	// corner of the image. This is full screen only. fullScreenRect gives the
	351	// position of the window on the screen, to restrict the drag to.
	352	bool wxDragImage::BeginDrag(const wxPoint& hotspot, wxWindow* window, wxWindow* fullScreenRect)
	353	{
	354	wxRect rect;
	355
	356	int x = fullScreenRect->GetPosition().x;
	357	int y = fullScreenRect->GetPosition().y;
	358
	359	wxSize sz = fullScreenRect->GetSize();
	360
	361	if (fullScreenRect->GetParent() && !fullScreenRect->IsKindOf(CLASSINFO(wxFrame)))
	362	fullScreenRect->GetParent()->ClientToScreen(& x, & y);
	363
	364	rect.x = x; rect.y = y;
	365	rect.width = sz.x; rect.height = sz.y;
	366
	367	return BeginDrag(hotspot, window, true, & rect);
	368	}
	369
	370	// End drag
	371	bool wxDragImage::EndDrag()
	372	{
	373	wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in EndDrag."));
	374
	375	ImageList_EndDrag();
	376
	377	if ( !::ReleaseCapture() )
	378	{
	379	wxLogLastError(wxT("ReleaseCapture"));
	380	}
	381
	382	#if wxUSE_SIMPLER_DRAGIMAGE
	383	if (m_cursor.Ok() && m_oldCursor.Ok())
	384	m_window->SetCursor(m_oldCursor);
	385	#else
	386	::ShowCursor(TRUE);
	387	#endif
	388
	389	m_window = (wxWindow*) NULL;
	390
	391	return true;
	392	}
	393
	394	// Move the image: call from OnMouseMove. Pt is in window client coordinates if window
	395	// is non-NULL, or in screen coordinates if NULL.
	396	bool wxDragImage::Move(const wxPoint& pt)
	397	{
	398	wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Move."));
	399
	400	// These are in window, not client coordinates.
	401	// So need to convert to client coordinates.
	402	wxPoint pt2(pt);
	403	if (m_window && !m_fullScreen)
	404	{
	405	RECT rect;
	406	rect.left = 0; rect.top = 0;
	407	rect.right = 0; rect.bottom = 0;
	408	DWORD style = ::GetWindowLong((HWND) m_window->GetHWND(), GWL_STYLE);
	409	#ifdef __WIN32__
	410	DWORD exStyle = ::GetWindowLong((HWND) m_window->GetHWND(), GWL_EXSTYLE);
	411	::AdjustWindowRectEx(& rect, style, FALSE, exStyle);
	412	#else
	413	::AdjustWindowRect(& rect, style, FALSE);
	414	#endif
	415	// Subtract the (negative) values, i.e. add a small increment
	416	pt2.x -= rect.left; pt2.y -= rect.top;
	417	}
	418	else if (m_window && m_fullScreen)
	419	{
	420	pt2 = m_window->ClientToScreen(pt2);
	421	}
	422
	423	bool ret = (ImageList_DragMove( pt2.x, pt2.y ) != 0);
	424
	425	m_position = pt2;
	426
	427	return ret;
	428	}
	429
	430	bool wxDragImage::Show()
	431	{
	432	wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Show."));
	433
	434	HWND hWnd = 0;
	435	if (m_window && !m_fullScreen)
	436	hWnd = (HWND) m_window->GetHWND();
	437
	438	bool ret = (ImageList_DragEnter( hWnd, m_position.x, m_position.y ) != 0);
	439
	440	return ret;
	441	}
	442
	443	bool wxDragImage::Hide()
	444	{
	445	wxASSERT_MSG( (m_hImageList != 0), wxT("Image list must not be null in Hide."));
	446
	447	HWND hWnd = 0;
	448	if (m_window && !m_fullScreen)
	449	hWnd = (HWND) m_window->GetHWND();
	450
	451	bool ret = (ImageList_DragLeave( hWnd ) != 0);
	452
	453	return ret;
	454	}
	455
	456	#endif
	457	// __WIN95__
	458
	459	#endif // wxUSE_DRAGIMAGE