[8.0b8-64] Areo taskbar preview size

[Taverius]

Something odd with the taskbar preview size.

Its much higher than it needs to be, almost like its telling windows to give it space underneath the icon for buttons, and then not using it.

TC
Image: http://i11.photobucket.com/albums/a196/Alepfhaist/Bugs/Screenshot_1.jpg

For comparison, windows backup (not as tall)
Image: http://i11.photobucket.com/albums/a196/Alepfhaist/Bugs/Screenshot_2.jpg

foobar2000, with buttons
Image: http://i11.photobucket.com/albums/a196/Alepfhaist/Bugs/Screenshot_3.jpg

[petermad]

Mine is not quite as high af yours, but it is definately higher than the preview of the 32bit TC.

[Taverius]

Interesting!

So its somehow signalling a wrong size for the window or something, and it varies by system ...

My 32-bit is still 7, the size is correct.

[Flint]

Confirm too.

[HolgerK]

Confirmed!
Looks like the reserved area for:

10.11.10 Release Total Commander 7.56 beta 1
...
05.11.10 Added: Windows 7: Show pause button in "aero peek" windows (shown when hovering over taskbar icon) during file operations to pause them

Btw:
Can anyone confirm my observation that the pause button is available in
TC7.56a, TC8.0ß8 x64
but not in TC8.0ß8 x86?

Regards
Holger

[HolgerK]

Looks like the reserved area for: ...

It's definitely the area for the pause button.
The area does not disappear after a foreground copy.

but not in TC8.0ß8 x86?

Can't confirm it either.
Today @work i could swear that the pause button wasn't there in TC8.0ß8 x86, but now @home all three versions are showing the same behavior.

Regards
Holger

[Flint]

Interesting idea. Though I cannot confirm observation about the missing Pause button, I discovered something else:
1) Start TC x32 — preview size is normal.
2) Start copying something — preview height is increased to contain the Pause button.
3) Waits until copying finishes, or just abort it — the Pause button is removed (as expected), but the preview size remains unchanged and therefore is higher than necessary.

[HolgerK]

Can't confirm it either.
Today @work i could swear that the pause button wasn't there in TC8.0ß8 x86, but now @home all three versions are showing the same behavior.

Found the reason: @work the compatibility mode for TC8.0ß8(x86) was set to "[x] run this program in compatibility mode for: "Windows Vista"".
So this special puzzle was a false alarm.

3) Waits until copying finishes, or just abort it — the Pause button is removed (as expected), but the preview size remains unchanged and therefore is higher than necessary

Yep, but this behavior is the same for all three version 7.56a, 8.0ß8 x86/x64.

Regards
Holger

Edit (*) Seems to be not possible to remove the button:

After a toolbar has been added to a thumbnail, buttons can be altered only through ITaskbarList3::ThumbBarUpdateButtons.
While individual buttons cannot be added or removed, they can be shown and hidden through ThumbBarUpdateButtons as needed.
The toolbar itself cannot be removed without re-creating the window itself.

[Flint]

Yep, but this behavior is the same for all three version 7.56a, 8.0ß8 x86/x64.

No, x64 version has increased height from the very beginning (as reported by the TP).

[HolgerK]

No, x64 version has increased height from the very beginning

Can't confirm. The initial height of the preview window before any copy operation is the same for all version here.
(Windows7 x64 ultimate Eng Aero enabled)

Regards
Holger

[ghisler(Author)]

This is actually a misfeature of Windows 7:
When you add buttons to the taskbar preview, e.g. a pause button as TC does, Windows reserves extra space for the toolbar. But when you remove all buttons, the extra space is NOT freed.

It's even documented by Microsoft:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd391703%28v=vs.85%29.aspx

The toolbar itself cannot be removed without re-creating the window itself.