Extends ITaskbarList2 by exposing methods that support the unified launching and switching taskbar button functionality added in Windows 7. This functionality includes thumbnail representations and switch targets based on individual tabs in a tabbed application, thumbnail toolbars, notification and status overlays, and progress indicators.

/// Extends ITaskbarList2 by exposing methods that support the unified launching and switching taskbar button

public interface ITaskbarList3

// ITaskbarList

/// Initializes the taskbar list object. This method must be called before any other ITaskbarList methods can be called.

// ITaskbarList2

/// value with which the thumbnail was registered as part the group through ITaskbarList3::RegisterTab.

/// is required, must already be registered through ITaskbarList3::RegisterTab, and cannot be NULL.</param>

/// inserted to the left of. This handle must already be registered through ITaskbarList3::RegisterTab.

/// through ITaskbarList3::RegisterTab. This value can be NULL if no tab is active.</param>

Declare Function ITaskbarList3 Lib "shell32.dll" (TODO) As TODO

Documentation

[ITaskbarList3] on MSDN

4: ITaskbarList4

Summary

Extends ITaskbarList3, the code is extracted from Windows API Code Pack source code.

internal interface ITaskbarList4

// ITaskbarList

// ITaskbarList2

// ITaskbarList3

// ITaskbarList4

Documentation

[ITaskbarList4] on MSDN

5: THUMBBUTTON

Summary

Used by methods of the ITaskbarList3 interface to define buttons used in a toolbar embedded in a window's thumbnail representation.

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