[Tcl-bugs] [ tktoolkit-Bugs-1926223 ] A button doesn't flash on Windows.

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Bugs item #1926223, was opened at 2008-03-26 14:51
Message generated for change (Comment added) made by patthoyts
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Category: 03. [*button] and [label]
Group: obsolete: 8.5.1
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Werner Wenzel (werner_wenzel)
Assigned to: Jeffrey Hobbs (hobbs)
Summary: A button doesn't flash on Windows.

Initial Comment:
Cf. [ 1595773 ] button flash causes tcl to fail on Windows

This all is still true on Windows XP.

E. g.:

button .b1 -text Hello -underline 0
    button .b2 -text World -underline 0
    bind . <Key-h> {.b1 flash; .b1 invoke}
    bind . <Key-w> {.b2 flash; .b2 invoke}
    pack .b1 .b2

(the example from the documentation)

doesn't work: no flashing.

Werner


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>Comment By: Pat Thoyts (patthoyts)
Date: 2008-04-20 20:20

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Made the documentation more clear on this point. Flash is probably not
what anyone needs anyway - very windows 2/athena widgets.

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Comment By: Werner Wenzel (werner_wenzel)
Date: 2008-04-04 16:40

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The comment from suchenwi (2008-04-04 15:48) holds.

That means:

1.
There is just a minuscule bug in the implementation: It doesn't make much
sense if the defaults of the various color options are the same.

2. There is a major bug in the documentation: The above example derives
from the original documentation and as such it simply doesn't work.

3. There is a personal thought of mine: I've read the "FriendlyM" but I'm
new to Tcl/Tk. What can I expect from a language if its authentic
documentation or the provided examples resp., are misleading?

Werner
 

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Comment By: suchenwi (suchenwi)
Date: 2008-04-04 14:48

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Step 1: RTFriendlyM - "pathName flash 
Flash the button. This is accomplished by redisplaying the button several
times, alternating between active and normal colors."

Step 2: See what those colors are - .b configure
... -activebackground activeBackground Foreground SystemButtonFace
SystemButtonFace
... -background background Background SystemButtonFace SystemButtonFace

So changing between twice the same color makes no big impression.

Step 3: .b configure -activebackground red -background green
.b flash
:^)

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