/////////////////////////////////////////////////////////////////////////
-// File: taskbar.cpp
+// File: src/msw/taskbar.cpp
// Purpose: Implements wxTaskBarIcon class for manipulating icons on
// the Windows task bar.
// Author: Julian Smart
-// Modified by:
+// Modified by: Vaclav Slavik
// Created: 24/3/98
// RCS-ID: $Id$
// Copyright: (c)
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "taskbar.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
+#if wxUSE_TASKBARICON
+
#ifndef WX_PRECOMP
-#include "wx/defs.h"
-#include "wx/window.h"
-#include "wx/frame.h"
-#include "wx/utils.h"
-#include "wx/menu.h"
+ #include "wx/window.h"
+ #include "wx/frame.h"
+ #include "wx/utils.h"
+ #include "wx/menu.h"
#endif
-#if defined(__WIN95__) && !defined(__TWIN32__)
-
-#include <windows.h>
-
-#include "wx/msw/winundef.h"
+#include "wx/msw/wrapshl.h"
#include <string.h>
#include "wx/taskbar.h"
-#include "wx/msw/private.h"
-
-#ifndef __TWIN32__
- #ifdef __GNUWIN32_OLD__
- #include "wx/msw/gnuwin32/extra.h"
- #endif
-#endif
-
-#ifdef __SALFORDC__
- #include <shellapi.h>
-#endif
+#include "wx/dynlib.h"
-#include "wx/listimpl.cpp"
-WX_DEFINE_LIST(wxTaskBarIconList);
-
-LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
- UINT wParam, LONG lParam );
-
-wxChar *wxTaskBarWindowClass = (wxChar*) wxT("wxTaskBarWindowClass");
-
-wxTaskBarIconList wxTaskBarIcon::sm_taskBarIcons;
-bool wxTaskBarIcon::sm_registeredClass = FALSE;
-UINT wxTaskBarIcon::sm_taskbarMsg = 0;
-
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_MOVE )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_DOWN )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_UP )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_DOWN )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_UP )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_DCLICK )
-DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_DCLICK )
-
-#if WXWIN_COMPATIBILITY_2_4
-BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
- EVT_TASKBAR_MOVE (wxTaskBarIcon::_OnMouseMove)
- EVT_TASKBAR_LEFT_DOWN (wxTaskBarIcon::_OnLButtonDown)
- EVT_TASKBAR_LEFT_UP (wxTaskBarIcon::_OnLButtonUp)
- EVT_TASKBAR_RIGHT_DOWN (wxTaskBarIcon::_OnRButtonDown)
- EVT_TASKBAR_RIGHT_UP (wxTaskBarIcon::_OnRButtonUp)
- EVT_TASKBAR_LEFT_DCLICK (wxTaskBarIcon::_OnLButtonDClick)
- EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
-END_EVENT_TABLE()
-#endif
+// initialized on demand
+static UINT gs_msgTaskbar = 0;
+static UINT gs_msgRestartTaskbar = 0;
IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
+// ============================================================================
+// implementation
+// ============================================================================
-wxTaskBarIcon::wxTaskBarIcon(void)
+// wrapper around Shell_NotifyIcon(): this function is not present in Win95
+// shell32.dll so load it dynamically to allow programs using wxTaskBarIcon to
+// start under this OS
+static BOOL wxShellNotifyIcon(DWORD dwMessage, NOTIFYICONDATA *pData)
{
- m_hWnd = 0;
- m_iconAdded = false;
+#if wxUSE_DYNLIB_CLASS
+ typedef BOOL (WINAPI *Shell_NotifyIcon_t)(DWORD, NOTIFYICONDATA *);
- AddObject(this);
+ static Shell_NotifyIcon_t s_pfnShell_NotifyIcon = NULL;
+ static bool s_initialized = false;
+ if ( !s_initialized )
+ {
+ s_initialized = true;
+
+ wxLogNull noLog;
+ wxDynamicLibrary dllShell("shell32.dll");
+ if ( dllShell.IsLoaded() )
+ {
+ wxDL_INIT_FUNC_AW(s_pfn, Shell_NotifyIcon, dllShell);
+ }
- if (RegisterWindowClass())
- m_hWnd = CreateTaskBarWindow();
+ // NB: it's ok to destroy dllShell here, we link to shell32.dll
+ // implicitly so it won't be unloaded
+ }
+
+ return s_pfnShell_NotifyIcon ? (*s_pfnShell_NotifyIcon)(dwMessage, pData)
+ : FALSE;
+#else // !wxUSE_DYNLIB_CLASS
+ return Shell_NotifyIcon(dwMessage, pData);
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
}
-wxTaskBarIcon::~wxTaskBarIcon(void)
+// ----------------------------------------------------------------------------
+// wxTaskBarIconWindow: helper window
+// ----------------------------------------------------------------------------
+
+// NB: this class serves two purposes:
+// 1. win32 needs a HWND associated with taskbar icon, this provides it
+// 2. we need wxTopLevelWindow so that the app doesn't exit when
+// last frame is closed but there still is a taskbar icon
+class wxTaskBarIconWindow : public wxFrame
{
- RemoveObject(this);
+public:
+ wxTaskBarIconWindow(wxTaskBarIcon *icon)
+ : wxFrame(NULL, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0),
+ m_icon(icon)
+ {
+ }
- if (m_iconAdded)
+ WXLRESULT MSWWindowProc(WXUINT msg,
+ WXWPARAM wParam, WXLPARAM lParam)
{
- RemoveIcon();
+ if (msg == gs_msgRestartTaskbar || msg == gs_msgTaskbar)
+ {
+ return m_icon->WindowProc(msg, wParam, lParam);
+ }
+ else
+ {
+ return wxFrame::MSWWindowProc(msg, wParam, lParam);
+ }
}
- if (m_hWnd)
+private:
+ wxTaskBarIcon *m_icon;
+};
+
+
+// ----------------------------------------------------------------------------
+// NotifyIconData: wrapper around NOTIFYICONDATA
+// ----------------------------------------------------------------------------
+
+struct NotifyIconData : public NOTIFYICONDATA
+{
+ NotifyIconData(WXHWND hwnd)
{
- ::DestroyWindow((HWND) m_hWnd);
- m_hWnd = 0;
+ memset(this, 0, sizeof(NOTIFYICONDATA));
+ cbSize = sizeof(NOTIFYICONDATA);
+ hWnd = (HWND) hwnd;
+ uCallbackMessage = gs_msgTaskbar;
+ uFlags = NIF_MESSAGE;
+
+ // we use the same id for all taskbar icons as we don't need it to
+ // distinguish between them
+ uID = 99;
}
+};
+
+// ----------------------------------------------------------------------------
+// wxTaskBarIcon
+// ----------------------------------------------------------------------------
+
+wxTaskBarIcon::wxTaskBarIcon()
+{
+ m_win = NULL;
+ m_iconAdded = false;
+ RegisterWindowMessages();
+}
+
+wxTaskBarIcon::~wxTaskBarIcon()
+{
+ if (m_iconAdded)
+ RemoveIcon();
+
+ if (m_win)
+ m_win->Destroy();
}
// Operations
bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
{
- if (!IsOk())
- return false;
+ // NB: we have to create the window lazily because of backward compatibility,
+ // old applications may create a wxTaskBarIcon instance before wxApp
+ // is initialized (as samples/taskbar used to do)
+ if (!m_win)
+ {
+ m_win = new wxTaskBarIconWindow(this);
+ }
+
+ m_icon = icon;
+ m_strTooltip = tooltip;
- NOTIFYICONDATA notifyData;
+ NotifyIconData notifyData(GetHwndOf(m_win));
- memset(¬ifyData, 0, sizeof(notifyData));
- notifyData.cbSize = sizeof(notifyData);
- notifyData.hWnd = (HWND) m_hWnd;
- notifyData.uCallbackMessage = sm_taskbarMsg;
- notifyData.uFlags = NIF_MESSAGE ;
if (icon.Ok())
{
notifyData.uFlags |= NIF_ICON;
- notifyData.hIcon = (HICON) icon.GetHICON();
+ notifyData.hIcon = GetHiconOf(icon);
}
- if (((const wxChar*) tooltip != NULL) && (tooltip != wxT("")))
+ // set NIF_TIP even for an empty tooltip: otherwise it would be impossible
+ // to remove an existing tooltip using this function
+ notifyData.uFlags |= NIF_TIP;
+ if ( !tooltip.empty() )
{
- notifyData.uFlags |= NIF_TIP ;
- lstrcpyn(notifyData.szTip, WXSTRINGCAST tooltip, sizeof(notifyData.szTip));
+ wxStrncpy(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
}
- notifyData.uID = 99;
+ bool ok = wxShellNotifyIcon(m_iconAdded ? NIM_MODIFY
+ : NIM_ADD, ¬ifyData) != 0;
- if (m_iconAdded)
- return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
- else
- {
- m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
- return m_iconAdded;
- }
+ if ( !m_iconAdded && ok )
+ m_iconAdded = true;
+
+ return ok;
}
-bool wxTaskBarIcon::RemoveIcon(void)
+bool wxTaskBarIcon::RemoveIcon()
{
if (!m_iconAdded)
return false;
- NOTIFYICONDATA notifyData;
-
- memset(¬ifyData, 0, sizeof(notifyData));
- notifyData.cbSize = sizeof(notifyData);
- notifyData.hWnd = (HWND) m_hWnd;
- notifyData.uCallbackMessage = sm_taskbarMsg;
- notifyData.uFlags = NIF_MESSAGE;
- notifyData.hIcon = 0 ; // hIcon;
- notifyData.uID = 99;
m_iconAdded = false;
- return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
+ NotifyIconData notifyData(GetHwndOf(m_win));
+
+ return wxShellNotifyIcon(NIM_DELETE, ¬ifyData) != 0;
}
-bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
+#if wxUSE_MENUS
+bool wxTaskBarIcon::PopupMenu(wxMenu *menu)
{
- // OK, so I know this isn't thread-friendly, but
- // what to do? We need this check.
+ wxASSERT_MSG( m_win != NULL, _T("taskbar icon not initialized") );
static bool s_inPopup = false;
s_inPopup = true;
- bool rval = false;
- wxWindow* win;
int x, y;
wxGetMousePosition(&x, &y);
- // is wxFrame the best window type to use???
- win = new wxFrame(NULL, -1, wxEmptyString, wxPoint(x,y), wxSize(-1,-1), 0);
- win->PushEventHandler(this);
+ m_win->Move(x, y);
- // Remove from record of top-level windows, or will confuse wxWindows
- // if we try to exit right now.
- wxTopLevelWindows.DeleteObject(win);
+ m_win->PushEventHandler(this);
menu->UpdateUI();
- // Work around a WIN32 bug
- ::SetForegroundWindow ((HWND) win->GetHWND ());
+ // the SetForegroundWindow() and PostMessage() calls are needed to work
+ // around Win32 bug with the popup menus shown for the notifications as
+ // documented at http://support.microsoft.com/kb/q135788/
+ ::SetForegroundWindow(GetHwndOf(m_win));
- rval = win->PopupMenu(menu, 0, 0);
+ bool rval = m_win->PopupMenu(menu, 0, 0);
- // Work around a WIN32 bug
- ::PostMessage ((HWND) win->GetHWND(),WM_NULL,0,0L);
+ ::PostMessage(GetHwndOf(m_win), WM_NULL, 0, 0L);
- win->PopEventHandler(false);
- win->Destroy();
- delete win;
+ m_win->PopEventHandler(false);
s_inPopup = false;
return rval;
}
+#endif // wxUSE_MENUS
-#if WXWIN_COMPATIBILITY_2_4
-// Overridables
-void wxTaskBarIcon::OnMouseMove(wxEvent&) {}
-void wxTaskBarIcon::OnLButtonDown(wxEvent&) {}
-void wxTaskBarIcon::OnLButtonUp(wxEvent&) {}
-void wxTaskBarIcon::OnRButtonDown(wxEvent&) {}
-void wxTaskBarIcon::OnRButtonUp(wxEvent&) {}
-void wxTaskBarIcon::OnLButtonDClick(wxEvent&) {}
-void wxTaskBarIcon::OnRButtonDClick(wxEvent&) {}
-
-void wxTaskBarIcon::_OnMouseMove(wxEvent& e) { OnMouseMove(e); }
-void wxTaskBarIcon::_OnLButtonDown(wxEvent& e) { OnLButtonDown(e); }
-void wxTaskBarIcon::_OnLButtonUp(wxEvent& e) { OnLButtonUp(e); }
-void wxTaskBarIcon::_OnRButtonDown(wxEvent& e) { OnRButtonDown(e); }
-void wxTaskBarIcon::_OnRButtonUp(wxEvent& e) { OnRButtonUp(e); }
-void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e) { OnLButtonDClick(e); }
-void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e) { OnRButtonDClick(e); }
-#endif
-
-wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
+void wxTaskBarIcon::RegisterWindowMessages()
{
- wxTaskBarIconList::Node *node = sm_taskBarIcons.GetFirst();
- while (node)
- {
- wxTaskBarIcon *obj = node->GetData();
- if (obj->GetHWND() == hWnd)
- return obj;
- node = node->GetNext();
- }
- return NULL;
-}
+ static bool s_registered = false;
-void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
-{
- sm_taskBarIcons.Append(obj);
-}
+ if ( !s_registered )
+ {
+ // Taskbar restart msg will be sent to us if the icon needs to be redrawn
+ gs_msgRestartTaskbar = RegisterWindowMessage(wxT("TaskbarCreated"));
-void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
-{
- sm_taskBarIcons.DeleteObject(obj);
-}
+ // Also register the taskbar message here
+ gs_msgTaskbar = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
-bool wxTaskBarIcon::RegisterWindowClass()
-{
- if (sm_registeredClass)
- return true;
-
- // Also register the taskbar message here
- sm_taskbarMsg = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
-
- WNDCLASS wc;
- bool rc;
-
- HINSTANCE hInstance = GetModuleHandle(NULL);
-
- /*
- * set up and register window class
- */
- wc.style = CS_HREDRAW | CS_VREDRAW;
- wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
- wc.cbClsExtra = 0;
- wc.cbWndExtra = 0;
- wc.hInstance = hInstance;
- wc.hIcon = 0;
- wc.hCursor = 0;
- wc.hbrBackground = 0;
- wc.lpszMenuName = NULL;
- wc.lpszClassName = wxTaskBarWindowClass ;
- rc = (::RegisterClass( &wc ) != 0);
-
- sm_registeredClass = (rc != 0);
-
- return( (rc != 0) );
+ s_registered = true;
+ }
}
-WXHWND wxTaskBarIcon::CreateTaskBarWindow()
-{
- HINSTANCE hInstance = GetModuleHandle(NULL);
-
- HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
- wxT("wxTaskBarWindow"),
- WS_OVERLAPPED,
- 0,
- 0,
- 10,
- 10,
- NULL,
- (HMENU) 0,
- hInstance,
- NULL);
-
- return (WXHWND) hWnd;
-}
+// ----------------------------------------------------------------------------
+// wxTaskBarIcon window proc
+// ----------------------------------------------------------------------------
-long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
+long wxTaskBarIcon::WindowProc(unsigned int msg,
+ unsigned int WXUNUSED(wParam),
+ long lParam)
{
wxEventType eventType = 0;
- if (msg != sm_taskbarMsg)
- return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
+ if (msg == gs_msgRestartTaskbar) // does the icon need to be redrawn?
+ {
+ m_iconAdded = false;
+ SetIcon(m_icon, m_strTooltip);
+ }
+
+ // this function should only be called for gs_msg(Restart)Taskbar messages
+ wxASSERT(msg == gs_msgTaskbar);
switch (lParam)
{
default:
break;
- }
+ }
- if (eventType) {
+ if (eventType)
+ {
wxTaskBarIconEvent event(eventType, this);
ProcessEvent(event);
}
+
return 0;
}
-LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
- UINT wParam, LONG lParam )
-{
- wxTaskBarIcon *obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
- if (obj)
- return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
- else
- return DefWindowProc(hWnd, msg, wParam, lParam);
-}
+#endif // wxUSE_TASKBARICON
-#endif
- // __WIN95__
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