学步园

Windows7提供了全新用户体验的任务栏特性，比如Overlay Icons 和 Progress Bars。

如果要实现这些特性，必须先得到taskbar的ITaskbarList3接口指针。因为VS2010还没有正式发布，所以使用VS2008及以下的版本，必须安装超过1个G的Windows 7 SDK，费时费力。其实，我们只需要自制一个头文件，对ITaskbarList3进行定义后，就可以直接使用了。

下面是仿造ITaskbarList2接口制作的ITaskbarList3接口的定义。

#ifndef __ITaskbarList3_INTERFACE_DEFINED__<br /> #define __ITaskbarList3_INTERFACE_DEFINED__</p> <p>/* interface ITaskbarList3 */<br /> /* [object][uuid] */ </p> <p>EXTERN_C const IID IID_ITaskbarList3;</p> <p>#if defined(__cplusplus) && !defined(CINTERFACE)</p> <p> typedef<br /> enum TBPFLAG<br /> {<br /> TBPF_NOPROGRESS = 0,<br /> TBPF_INDETERMINATE = 0x1,<br /> TBPF_NORMAL = 0x2,<br /> TBPF_ERROR = 0x4,<br /> TBPF_PAUSED = 0x8<br /> } TBPFLAG;</p> <p> typedef struct THUMBBUTTON *LPTHUMBBUTTON;</p> <p> MIDL_INTERFACE("EA1AFB91-9E28-4B86-90E9-9E9F8A5EEFAF")<br /> ITaskbarList3 : public ITaskbarList2<br /> {<br /> public:<br /> virtual HRESULT STDMETHODCALLTYPE MarkFullscreenWindow(<br /> /* [in] */ __RPC__in HWND hwnd,<br /> /* [in] */ BOOL fFullscreen) = 0;</p> <p> // ITaskbarList3 members<br /> STDMETHOD (SetProgressValue) (HWND hwnd, ULONGLONG ullCompleted, ULONGLONG ullTotal) PURE;<br /> STDMETHOD (SetProgressState) (HWND hwnd, TBPFLAG tbpFlags) PURE;<br /> STDMETHOD (RegisterTab) (HWND hwndTab,HWND hwndMDI) PURE;<br /> STDMETHOD (UnregisterTab) (HWND hwndTab) PURE;<br /> STDMETHOD (SetTabOrder) (HWND hwndTab, HWND hwndInsertBefore) PURE;<br /> STDMETHOD (SetTabActive) (HWND hwndTab, HWND hwndMDI, DWORD dwReserved) PURE;<br /> STDMETHOD (ThumbBarAddButtons) (HWND hwnd, UINT cButtons, LPTHUMBBUTTON pButton) PURE;<br /> STDMETHOD (ThumbBarUpdateButtons)(HWND hwnd, UINT cButtons, LPTHUMBBUTTON pButton) PURE;<br /> STDMETHOD (ThumbBarSetImageList) (HWND hwnd, HIMAGELIST himl) PURE;<br /> STDMETHOD (SetOverlayIcon) (HWND hwnd, HICON hIcon, LPCWSTR pszDescription) PURE;<br /> STDMETHOD (SetThumbnailTooltip) (HWND hwnd, LPCWSTR pszTip) PURE;<br /> STDMETHOD (SetThumbnailClip) (HWND hwnd, RECT *prcClip) PURE;<br /> };</p> <p>#else /* C style interface */</p> <p>#endif /* C style interface */</p> <p>#endif /* __ITaskbarList3_INTERFACE_DEFINED__ */