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327 lines
9.2 KiB
C++
327 lines
9.2 KiB
C++
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/////////////////////////////////////////////////////////////////////////
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// File: src/msw/taskbar.cpp
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// Purpose: Implements wxTaskBarIcon class for manipulating icons on
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// the Windows task bar.
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// Author: Julian Smart
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// Modified by: Vaclav Slavik
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// Created: 24/3/98
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// RCS-ID: $Id: taskbar.cpp 47475 2007-07-14 20:27:01Z VZ $
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// Copyright: (c)
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/window.h"
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#include "wx/frame.h"
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#include "wx/utils.h"
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#include "wx/menu.h"
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#endif
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#include "wx/msw/private.h"
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#include "wx/msw/winundef.h"
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#include <string.h>
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#include "wx/taskbar.h"
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#ifdef __WXWINCE__
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#include <winreg.h>
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#include <shellapi.h>
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#endif
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// initialized on demand
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UINT gs_msgTaskbar = 0;
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UINT gs_msgRestartTaskbar = 0;
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#if WXWIN_COMPATIBILITY_2_4
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BEGIN_EVENT_TABLE(wxTaskBarIcon, wxTaskBarIconBase)
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EVT_TASKBAR_MOVE (wxTaskBarIcon::_OnMouseMove)
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EVT_TASKBAR_LEFT_DOWN (wxTaskBarIcon::_OnLButtonDown)
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EVT_TASKBAR_LEFT_UP (wxTaskBarIcon::_OnLButtonUp)
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EVT_TASKBAR_RIGHT_DOWN (wxTaskBarIcon::_OnRButtonDown)
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EVT_TASKBAR_RIGHT_UP (wxTaskBarIcon::_OnRButtonUp)
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EVT_TASKBAR_LEFT_DCLICK (wxTaskBarIcon::_OnLButtonDClick)
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EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
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END_EVENT_TABLE()
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#endif
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IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxTaskBarIconWindow: helper window
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// ----------------------------------------------------------------------------
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// NB: this class serves two purposes:
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// 1. win32 needs a HWND associated with taskbar icon, this provides it
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// 2. we need wxTopLevelWindow so that the app doesn't exit when
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// last frame is closed but there still is a taskbar icon
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class wxTaskBarIconWindow : public wxFrame
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{
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public:
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wxTaskBarIconWindow(wxTaskBarIcon *icon)
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: wxFrame(NULL, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0),
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m_icon(icon)
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{
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}
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WXLRESULT MSWWindowProc(WXUINT msg,
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WXWPARAM wParam, WXLPARAM lParam)
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{
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if (msg == gs_msgRestartTaskbar || msg == gs_msgTaskbar)
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{
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return m_icon->WindowProc(msg, wParam, lParam);
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}
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else
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{
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return wxFrame::MSWWindowProc(msg, wParam, lParam);
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}
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}
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private:
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wxTaskBarIcon *m_icon;
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};
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// ----------------------------------------------------------------------------
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// NotifyIconData: wrapper around NOTIFYICONDATA
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// ----------------------------------------------------------------------------
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struct NotifyIconData : public NOTIFYICONDATA
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{
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NotifyIconData(WXHWND hwnd)
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{
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memset(this, 0, sizeof(NOTIFYICONDATA));
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cbSize = sizeof(NOTIFYICONDATA);
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hWnd = (HWND) hwnd;
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uCallbackMessage = gs_msgTaskbar;
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uFlags = NIF_MESSAGE;
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// we use the same id for all taskbar icons as we don't need it to
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// distinguish between them
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uID = 99;
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}
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};
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// ----------------------------------------------------------------------------
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// wxTaskBarIcon
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// ----------------------------------------------------------------------------
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wxTaskBarIcon::wxTaskBarIcon()
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{
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m_win = NULL;
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m_iconAdded = false;
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RegisterWindowMessages();
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}
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wxTaskBarIcon::~wxTaskBarIcon()
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{
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if (m_iconAdded)
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RemoveIcon();
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if (m_win)
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m_win->Destroy();
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}
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// Operations
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bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
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{
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// NB: we have to create the window lazily because of backward compatibility,
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// old applications may create a wxTaskBarIcon instance before wxApp
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// is initialized (as samples/taskbar used to do)
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if (!m_win)
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{
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m_win = new wxTaskBarIconWindow(this);
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}
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m_icon = icon;
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m_strTooltip = tooltip;
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NotifyIconData notifyData(GetHwndOf(m_win));
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if (icon.Ok())
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{
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notifyData.uFlags |= NIF_ICON;
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notifyData.hIcon = GetHiconOf(icon);
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}
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// set NIF_TIP even for an empty tooltip: otherwise it would be impossible
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// to remove an existing tooltip using this function
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notifyData.uFlags |= NIF_TIP;
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if ( !tooltip.empty() )
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{
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wxStrncpy(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
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}
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bool ok = Shell_NotifyIcon(m_iconAdded ? NIM_MODIFY
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: NIM_ADD, ¬ifyData) != 0;
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if ( !m_iconAdded && ok )
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m_iconAdded = true;
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return ok;
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}
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bool wxTaskBarIcon::RemoveIcon()
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{
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if (!m_iconAdded)
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return false;
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m_iconAdded = false;
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NotifyIconData notifyData(GetHwndOf(m_win));
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return Shell_NotifyIcon(NIM_DELETE, ¬ifyData) != 0;
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}
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bool wxTaskBarIcon::PopupMenu(wxMenu *menu)
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{
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wxASSERT_MSG( m_win != NULL, _T("taskbar icon not initialized") );
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static bool s_inPopup = false;
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if (s_inPopup)
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return false;
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s_inPopup = true;
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int x, y;
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wxGetMousePosition(&x, &y);
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m_win->Move(x, y);
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m_win->PushEventHandler(this);
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menu->UpdateUI();
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// the SetForegroundWindow() and PostMessage() calls are needed to work
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// around Win32 bug with the popup menus shown for the notifications as
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// documented at http://support.microsoft.com/kb/q135788/
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::SetForegroundWindow(GetHwndOf(m_win));
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bool rval = m_win->PopupMenu(menu, 0, 0);
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::PostMessage(GetHwndOf(m_win), WM_NULL, 0, 0L);
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m_win->PopEventHandler(false);
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s_inPopup = false;
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return rval;
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}
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#if WXWIN_COMPATIBILITY_2_4
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// Overridables
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void wxTaskBarIcon::OnMouseMove(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnLButtonDown(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnLButtonUp(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnRButtonDown(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnRButtonUp(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnLButtonDClick(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::OnRButtonDClick(wxEvent& e) { e.Skip(); }
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void wxTaskBarIcon::_OnMouseMove(wxTaskBarIconEvent& e)
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{ OnMouseMove(e); }
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void wxTaskBarIcon::_OnLButtonDown(wxTaskBarIconEvent& e)
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{ OnLButtonDown(e); }
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void wxTaskBarIcon::_OnLButtonUp(wxTaskBarIconEvent& e)
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{ OnLButtonUp(e); }
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void wxTaskBarIcon::_OnRButtonDown(wxTaskBarIconEvent& e)
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{ OnRButtonDown(e); }
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void wxTaskBarIcon::_OnRButtonUp(wxTaskBarIconEvent& e)
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{ OnRButtonUp(e); }
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void wxTaskBarIcon::_OnLButtonDClick(wxTaskBarIconEvent& e)
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{ OnLButtonDClick(e); }
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void wxTaskBarIcon::_OnRButtonDClick(wxTaskBarIconEvent& e)
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{ OnRButtonDClick(e); }
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#endif
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void wxTaskBarIcon::RegisterWindowMessages()
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{
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static bool s_registered = false;
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if ( !s_registered )
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{
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// Taskbar restart msg will be sent to us if the icon needs to be redrawn
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gs_msgRestartTaskbar = RegisterWindowMessage(wxT("TaskbarCreated"));
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// Also register the taskbar message here
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gs_msgTaskbar = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
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s_registered = true;
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}
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}
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// ----------------------------------------------------------------------------
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// wxTaskBarIcon window proc
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// ----------------------------------------------------------------------------
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long wxTaskBarIcon::WindowProc(unsigned int msg,
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unsigned int WXUNUSED(wParam),
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long lParam)
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{
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wxEventType eventType = 0;
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if (msg == gs_msgRestartTaskbar) // does the icon need to be redrawn?
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{
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m_iconAdded = false;
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SetIcon(m_icon, m_strTooltip);
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}
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// this function should only be called for gs_msg(Restart)Taskbar messages
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wxASSERT(msg == gs_msgTaskbar);
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switch (lParam)
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{
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case WM_LBUTTONDOWN:
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eventType = wxEVT_TASKBAR_LEFT_DOWN;
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break;
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case WM_LBUTTONUP:
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eventType = wxEVT_TASKBAR_LEFT_UP;
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break;
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case WM_RBUTTONDOWN:
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eventType = wxEVT_TASKBAR_RIGHT_DOWN;
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break;
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case WM_RBUTTONUP:
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eventType = wxEVT_TASKBAR_RIGHT_UP;
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break;
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case WM_LBUTTONDBLCLK:
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eventType = wxEVT_TASKBAR_LEFT_DCLICK;
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break;
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case WM_RBUTTONDBLCLK:
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eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
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break;
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case WM_MOUSEMOVE:
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eventType = wxEVT_TASKBAR_MOVE;
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break;
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default:
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break;
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}
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if (eventType)
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{
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wxTaskBarIconEvent event(eventType, this);
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ProcessEvent(event);
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}
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return 0;
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}
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