Developing for the Windows 7 Taskbar – Application ID – Part 2

[June 19th - I added a code sample and new screenshots.]

In response to some of the comments I included a link to the download and new screenshots to show the effect of changing Application ID in run time. And Just to make sure we are all on the same page here are two images to illustrate the power of AppID. You can clearly see that the same application (with the same original application ID) can have two different Taskbar buttons. You can also download the code for this application.

Taskbar_buttons_Multiplebuttone1

 Taskbar_buttons_Multiplebuttone2

Just a note as response to one of the comments. Yes you can place a different Taskbar button between to windows with different AppID!

download the code for this application

You can find the managed code Taskbar object in the Windows API Code pack project.

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Comments

  1. 7flavor
    Posted on: June 19, 2009 at 4:19PM  

    What I meant was for older apps where the developer hasn't assigned an AppID to his app and the OS computes it, why doesn't Windows 7 offer the ability to separate the grouped taskbar buttons by assigning them separate AppIDs and allowing the user to drag another button and place it in between the two? Grouping (not combining) is not still configurable like how IE allows configuring tab grouping (in between two tabs or to the extreme right). Out of the box, taskbar button combining can be turned off (what was called grouping in Windows XP) but taskbar grouping remains because the OS assigns the same appid from whatever scope it decides. The newest instance (new window, new process) of an application doesn't appear to the farthest right as the previous behavior was. Users are accustomed to a certain behavior for 15 years since Windows 95 and suddenly Windows 7 doesn't allow that, it becomes difficult to adjust to that. Maybe Windows 7 SP1 will tweak it to turn off grouping as well.

  2. hamzafarooq3
    Posted on: June 20, 2009 at 9:13AM  

    there is a i mistake in my windows 7 how i i report  i u know the new note thing once u close it it says save or not i ticked so not show this message again and i can save it now!!!!

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