wintaskbar.c revision 35c4bbdf 
1/*
2  Permission is hereby granted, free of charge, to any person obtaining a
3  copy of this software and associated documentation files (the "Software"),
4  to deal in the Software without restriction, including without limitation
5  the rights to use, copy, modify, merge, publish, distribute, sublicense,
6  and/or sell copies of the Software, and to permit persons to whom the
7  Software is furnished to do so, subject to the following conditions:
8
9  The above copyright notice and this permission notice (including the next
10  paragraph) shall be included in all copies or substantial portions of the
11  Software.
12
13  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
16  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
19  DEALINGS IN THE SOFTWARE.
20*/
21
22#ifdef HAVE_XWIN_CONFIG_H
23#include <xwin-config.h>
24#endif
25
26#include "win.h"
27#include "winwindow.h"
28
29const GUID CLSID_TaskbarList = {0x56fdf344,0xfd6d,0x11d0,{0x95,0x8a,0x0,0x60,0x97,0xc9,0xa0,0x90}};
30const GUID IID_ITaskbarList =  {0x56fdf342,0xfd6d,0x11d0,{0x95,0x8a,0x0,0x60,0x97,0xc9,0xa0,0x90}};
31
32#ifdef INTERFACE
33#undef INTERFACE
34#endif
35
36#define INTERFACE ITaskbarList
37DECLARE_INTERFACE_(ITaskbarList, IUnknown)
38{
39  /* IUnknown methods */
40  STDMETHOD(QueryInterface) (THIS_ REFIID riid, void **ppv) PURE;
41  STDMETHOD_(ULONG, AddRef) (THIS) PURE;
42  STDMETHOD_(ULONG, Release) (THIS) PURE;
43
44  /* ITaskbarList methods */
45  STDMETHOD(HrInit) (THIS) PURE;
46  STDMETHOD(AddTab) (THIS_ HWND hWnd) PURE;
47  STDMETHOD(DeleteTab) (THIS_ HWND hWnd) PURE;
48  STDMETHOD(ActivateTab) (THIS_ HWND hWnd) PURE;
49  STDMETHOD(SetActiveAlt) (THIS_ HWND hWnd) PURE;
50};
51#undef INTERFACE
52
53/*
54   The stuff above needs to be in win32api headers, not defined here,
55   or at least generated from the MIDL :-)
56*/
57
58/*
59  This is unnecessarily heavyweight, we could just call CoInitialize() once at
60   startup and CoUninitialize() once at shutdown
61*/
62
63/*
64  The documentation for ITaskbarList::AddTab says that we are responsible for
65   deleting the tab ourselves when the window is deleted, but that doesn't actually
66   seem to be the case
67*/
68
69void winShowWindowOnTaskbar(HWND hWnd, BOOL show)
70{
71  ITaskbarList* pTaskbarList = NULL;
72
73  if (SUCCEEDED(CoInitialize(NULL)))
74    {
75      if (SUCCEEDED(CoCreateInstance((const CLSID *)&CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, (const IID *)&IID_ITaskbarList, (void**)&pTaskbarList)))
76        {
77          if (SUCCEEDED(pTaskbarList->lpVtbl->HrInit(pTaskbarList)))
78            {
79              if (show)
80                {
81                  pTaskbarList->lpVtbl->AddTab(pTaskbarList,hWnd);
82                }
83              else
84                {
85                  pTaskbarList->lpVtbl->DeleteTab(pTaskbarList,hWnd);
86                }
87            }
88          pTaskbarList->lpVtbl->Release(pTaskbarList);
89        }
90      CoUninitialize();
91    }
92}
93