Source code of Windows XP (NT5)
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187 lines
3.8 KiB

#include "priv.h"
#include "resource.h"
#include <trayp.h>
class TaskbarList : public ITaskbarList2
{
public:
TaskbarList();
// IUnknown Methods
STDMETHODIMP QueryInterface(REFIID,void **);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// ITaskbarList Methods
STDMETHODIMP HrInit(void);
STDMETHODIMP AddTab(HWND hwnd);
STDMETHODIMP DeleteTab(HWND hwnd);
STDMETHODIMP ActivateTab(HWND hwnd);
STDMETHODIMP SetActiveAlt(HWND hwnd);
// ITaskbarList2 Methods
STDMETHODIMP MarkFullscreenWindow(HWND hwnd, BOOL fFullscreen);
protected:
~TaskbarList();
HWND _HwndGetTaskbarList(void);
UINT _cRef;
HWND _hwndTaskbarList;
int _wm_shellhook;
};
//////////////////////////////////////////////////////////////////////////////
//
// TaskbarList Object
//
//////////////////////////////////////////////////////////////////////////////
STDAPI TaskbarList_CreateInstance(IUnknown* pUnkOuter, IUnknown** ppunk, LPCOBJECTINFO poi)
{
// aggregation checking is handled in class factory
TaskbarList *pTL = new TaskbarList();
if (pTL)
{
*ppunk = SAFECAST(pTL, IUnknown *);
return S_OK;
}
return E_OUTOFMEMORY;
}
TaskbarList::TaskbarList()
{
_cRef = 1;
_hwndTaskbarList = NULL;
_wm_shellhook = RegisterWindowMessage(TEXT("SHELLHOOK"));
DllAddRef();
}
TaskbarList::~TaskbarList()
{
ASSERT(_cRef == 0); // should always have zero
DllRelease();
}
HWND TaskbarList::_HwndGetTaskbarList(void)
{
if (_hwndTaskbarList && IsWindow(_hwndTaskbarList))
return _hwndTaskbarList;
_hwndTaskbarList = FindWindow(TEXT("Shell_TrayWnd"), NULL);
if (_hwndTaskbarList)
_hwndTaskbarList = (HWND)SendMessage(_hwndTaskbarList, WMTRAY_QUERY_VIEW, 0, 0);
return _hwndTaskbarList;
}
//////////////////////////////////
//
// IUnknown Methods...
//
HRESULT TaskbarList::QueryInterface(REFIID iid, void **ppv)
{
static const QITAB qit[] =
{
QITABENT(TaskbarList, ITaskbarList),
QITABENT(TaskbarList, ITaskbarList2),
{ 0 },
};
return QISearch(this, qit, iid, ppv);
}
ULONG TaskbarList::AddRef()
{
return ++_cRef;
}
ULONG TaskbarList::Release()
{
if (--_cRef)
return _cRef;
delete this;
return 0;
}
//////////////////////////////////
//
// ITaskbarList Methods...
//
HRESULT TaskbarList::HrInit(void)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL == NULL)
return E_NOTIMPL;
return S_OK;
}
HRESULT TaskbarList::AddTab(HWND hwnd)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL)
SendMessage(hwndTL, _wm_shellhook, HSHELL_WINDOWCREATED, (LPARAM) hwnd);
return S_OK;
}
HRESULT TaskbarList::DeleteTab(HWND hwnd)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL)
SendMessage(hwndTL, _wm_shellhook, HSHELL_WINDOWDESTROYED, (LPARAM) hwnd);
return S_OK;
}
HRESULT TaskbarList::ActivateTab(HWND hwnd)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL)
{
SendMessage(hwndTL, _wm_shellhook, HSHELL_WINDOWACTIVATED, (LPARAM) hwnd);
SendMessage(hwndTL, TBC_SETACTIVEALT , 0, (LPARAM) hwnd);
}
return S_OK;
}
HRESULT TaskbarList::SetActiveAlt(HWND hwnd)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL)
SendMessage(hwndTL, TBC_SETACTIVEALT , 0, (LPARAM) hwnd);
return S_OK;
}
HRESULT TaskbarList::MarkFullscreenWindow(HWND hwnd, BOOL fFullscreen)
{
if (GetUIVersion() >= 6)
{
HWND hwndTL = _HwndGetTaskbarList();
if (hwndTL)
SendMessage(hwndTL, TBC_MARKFULLSCREEN, (WPARAM) fFullscreen, (LPARAM) hwnd);
return S_OK;
}
return E_FAIL; // ITaskbarList2 not supported downlevel
};