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1/////////////////////////////////////////////////////////////////////////
2// File: src/msw/taskbar.cpp
3// Purpose: Implements wxTaskBarIcon class for manipulating icons on
4// the Windows task bar.
5// Author: Julian Smart
6// Modified by: Vaclav Slavik
7// Created: 24/3/98
8// RCS-ID: $Id$
9// Copyright: (c)
10// Licence: wxWindows licence
11/////////////////////////////////////////////////////////////////////////
12
13// For compilers that support precompilation, includes "wx.h".
14#include "wx/wxprec.h"
15
16#ifdef __BORLANDC__
17 #pragma hdrstop
18#endif
19
20#ifndef WX_PRECOMP
21 #include "wx/window.h"
22 #include "wx/frame.h"
23 #include "wx/utils.h"
24 #include "wx/menu.h"
25#endif
26
27#include "wx/msw/private.h"
28#include "wx/msw/winundef.h"
29
30#include <string.h>
31#include "wx/taskbar.h"
32
33#ifdef __WXWINCE__
34 #include <winreg.h>
35 #include <shellapi.h>
36#endif
37
38// initialized on demand
39UINT gs_msgTaskbar = 0;
40UINT gs_msgRestartTaskbar = 0;
41
42
43IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
44
45// ============================================================================
46// implementation
47// ============================================================================
48
49// ----------------------------------------------------------------------------
50// wxTaskBarIconWindow: helper window
51// ----------------------------------------------------------------------------
52
53// NB: this class serves two purposes:
54// 1. win32 needs a HWND associated with taskbar icon, this provides it
55// 2. we need wxTopLevelWindow so that the app doesn't exit when
56// last frame is closed but there still is a taskbar icon
57class wxTaskBarIconWindow : public wxFrame
58{
59public:
60 wxTaskBarIconWindow(wxTaskBarIcon *icon)
61 : wxFrame(NULL, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0),
62 m_icon(icon)
63 {
64 }
65
66 WXLRESULT MSWWindowProc(WXUINT msg,
67 WXWPARAM wParam, WXLPARAM lParam)
68 {
69 if (msg == gs_msgRestartTaskbar || msg == gs_msgTaskbar)
70 {
71 return m_icon->WindowProc(msg, wParam, lParam);
72 }
73 else
74 {
75 return wxFrame::MSWWindowProc(msg, wParam, lParam);
76 }
77 }
78
79private:
80 wxTaskBarIcon *m_icon;
81};
82
83
84// ----------------------------------------------------------------------------
85// NotifyIconData: wrapper around NOTIFYICONDATA
86// ----------------------------------------------------------------------------
87
88struct NotifyIconData : public NOTIFYICONDATA
89{
90 NotifyIconData(WXHWND hwnd)
91 {
92 memset(this, 0, sizeof(NOTIFYICONDATA));
93 cbSize = sizeof(NOTIFYICONDATA);
94 hWnd = (HWND) hwnd;
95 uCallbackMessage = gs_msgTaskbar;
96 uFlags = NIF_MESSAGE;
97
98 // we use the same id for all taskbar icons as we don't need it to
99 // distinguish between them
100 uID = 99;
101 }
102};
103
104// ----------------------------------------------------------------------------
105// wxTaskBarIcon
106// ----------------------------------------------------------------------------
107
108wxTaskBarIcon::wxTaskBarIcon()
109{
110 m_win = NULL;
111 m_iconAdded = false;
112 RegisterWindowMessages();
113}
114
115wxTaskBarIcon::~wxTaskBarIcon()
116{
117 if (m_iconAdded)
118 RemoveIcon();
119
120 if (m_win)
121 m_win->Destroy();
122}
123
124// Operations
125bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
126{
127 // NB: we have to create the window lazily because of backward compatibility,
128 // old applications may create a wxTaskBarIcon instance before wxApp
129 // is initialized (as samples/taskbar used to do)
130 if (!m_win)
131 {
132 m_win = new wxTaskBarIconWindow(this);
133 }
134
135 m_icon = icon;
136 m_strTooltip = tooltip;
137
138 NotifyIconData notifyData(GetHwndOf(m_win));
139
140 if (icon.Ok())
141 {
142 notifyData.uFlags |= NIF_ICON;
143 notifyData.hIcon = GetHiconOf(icon);
144 }
145
146 if ( !tooltip.empty() )
147 {
148 notifyData.uFlags |= NIF_TIP;
149// lstrcpyn(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
150 wxStrncpy(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
151 }
152
153 bool ok = Shell_NotifyIcon(m_iconAdded ? NIM_MODIFY
154 : NIM_ADD, &notifyData) != 0;
155
156 if ( !m_iconAdded && ok )
157 m_iconAdded = true;
158
159 return ok;
160}
161
162bool wxTaskBarIcon::RemoveIcon()
163{
164 if (!m_iconAdded)
165 return false;
166
167 m_iconAdded = false;
168
169 NotifyIconData notifyData(GetHwndOf(m_win));
170
171 return Shell_NotifyIcon(NIM_DELETE, &notifyData) != 0;
172}
173
174#if wxUSE_MENUS
175bool wxTaskBarIcon::PopupMenu(wxMenu *menu)
176{
177 wxASSERT_MSG( m_win != NULL, _T("taskbar icon not initialized") );
178
179 static bool s_inPopup = false;
180
181 if (s_inPopup)
182 return false;
183
184 s_inPopup = true;
185
186 int x, y;
187 wxGetMousePosition(&x, &y);
188
189 m_win->Move(x, y);
190
191 m_win->PushEventHandler(this);
192
193 menu->UpdateUI();
194
195 // the SetForegroundWindow() and PostMessage() calls are needed to work
196 // around Win32 bug with the popup menus shown for the notifications as
197 // documented at http://support.microsoft.com/kb/q135788/
198 ::SetForegroundWindow(GetHwndOf(m_win));
199
200 bool rval = m_win->PopupMenu(menu, 0, 0);
201
202 ::PostMessage(GetHwndOf(m_win), WM_NULL, 0, 0L);
203
204 m_win->PopEventHandler(false);
205
206 s_inPopup = false;
207
208 return rval;
209}
210#endif // wxUSE_MENUS
211
212void wxTaskBarIcon::RegisterWindowMessages()
213{
214 static bool s_registered = false;
215
216 if ( !s_registered )
217 {
218 // Taskbar restart msg will be sent to us if the icon needs to be redrawn
219 gs_msgRestartTaskbar = RegisterWindowMessage(wxT("TaskbarCreated"));
220
221 // Also register the taskbar message here
222 gs_msgTaskbar = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
223
224 s_registered = true;
225 }
226}
227
228// ----------------------------------------------------------------------------
229// wxTaskBarIcon window proc
230// ----------------------------------------------------------------------------
231
232long wxTaskBarIcon::WindowProc(unsigned int msg,
233 unsigned int WXUNUSED(wParam),
234 long lParam)
235{
236 wxEventType eventType = 0;
237
238 if (msg == gs_msgRestartTaskbar) // does the icon need to be redrawn?
239 {
240 m_iconAdded = false;
241 SetIcon(m_icon, m_strTooltip);
242 }
243
244 // this function should only be called for gs_msg(Restart)Taskbar messages
245 wxASSERT(msg == gs_msgTaskbar);
246
247 switch (lParam)
248 {
249 case WM_LBUTTONDOWN:
250 eventType = wxEVT_TASKBAR_LEFT_DOWN;
251 break;
252
253 case WM_LBUTTONUP:
254 eventType = wxEVT_TASKBAR_LEFT_UP;
255 break;
256
257 case WM_RBUTTONDOWN:
258 eventType = wxEVT_TASKBAR_RIGHT_DOWN;
259 break;
260
261 case WM_RBUTTONUP:
262 eventType = wxEVT_TASKBAR_RIGHT_UP;
263 break;
264
265 case WM_LBUTTONDBLCLK:
266 eventType = wxEVT_TASKBAR_LEFT_DCLICK;
267 break;
268
269 case WM_RBUTTONDBLCLK:
270 eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
271 break;
272
273 case WM_MOUSEMOVE:
274 eventType = wxEVT_TASKBAR_MOVE;
275 break;
276
277 default:
278 break;
279 }
280
281 if (eventType)
282 {
283 wxTaskBarIconEvent event(eventType, this);
284
285 ProcessEvent(event);
286 }
287
288 return 0;
289}