From Newsgroup: comp.lang.tcl

I am using one particular ttk::treeview as a listbox:

ttk::frame .ignoresForm.ignoresListFrame
set ignoresList [ttk::treeview \
.ignoresForm.ignoresListFrame.ignoresList -striped true \
-yscrollcommand {.ignoresForm.ignoresListFrame.scrolly set}]
ttk::style configure List.Treeview -indent 0
#ttk::style map List.Treeview -indent [list disabled 0 active 0]
$ignoresList configure -show tree -selectmode browse \
-style List.Treeview
$ignoresList column #0 -anchor w -stretch true
ttk::scrollbar .ignoresForm.ignoresListFrame.scrolly -orient vertical \
-command {.ignoresForm.ignoresListFrame.ignoresList yview}

By default a ttk::treeview has an -indent of 20 pixels which makes sense
for trees but is not needed for lists.

In the code above I've tried to create a custom style to apply to one
treeview but it has no effect whether I use ttk::style configure or
ttk::style map.

What is the correct way to do this?
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From Newsgroup: comp.lang.tcl

On Thu, 17 Jul 2025 07:36:19 -0000 (UTC)
Mark Summerfield <m.n.summerfield@gmail.com> wrote:

I am using one particular ttk::treeview as a listbox:

ttk::frame .ignoresForm.ignoresListFrame
set ignoresList [ttk::treeview \
.ignoresForm.ignoresListFrame.ignoresList -striped true \
-yscrollcommand {.ignoresForm.ignoresListFrame.scrolly set}]
ttk::style configure List.Treeview -indent 0
#ttk::style map List.Treeview -indent [list disabled 0 active 0]
$ignoresList configure -show tree -selectmode browse \
-style List.Treeview
$ignoresList column #0 -anchor w -stretch true
ttk::scrollbar .ignoresForm.ignoresListFrame.scrolly -orient vertical \
-command {.ignoresForm.ignoresListFrame.ignoresList yview}

By default a ttk::treeview has an -indent of 20 pixels which makes sense
for trees but is not needed for lists.

In the code above I've tried to create a custom style to apply to one treeview but it has no effect whether I use ttk::style configure or ttk::style map.

What is the correct way to do this?

Use

ttk::style configure List.Treeview.Item -indicatorsize 0

to suppress the space reserved for the open/close indicator. This might be ignored on Win/Mac with native themes.


Regards
--
Emiliano
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From Newsgroup: comp.lang.tcl


Mark Summerfield <m.n.summerfield@gmail.com> posted:

The trick is to use the headings, not the tree itself :

set _names { ABC DEF GHI }

ttk::treeview .mytree -columns ignored -show headings -yscrollcommand { .scrY set }

.mytree heading ignored -text "Names"

foreach _item $_names {

.mytree insert {} end -values $_item

}

ttk::scrollbar .scrY -command { .mytree yview }

pack .mytree -side left ; pack .scrY -side right -fill y

Olivier.

I am using one particular ttk::treeview as a listbox:

ttk::frame .ignoresForm.ignoresListFrame
set ignoresList [ttk::treeview \
.ignoresForm.ignoresListFrame.ignoresList -striped true \
-yscrollcommand {.ignoresForm.ignoresListFrame.scrolly set}]
ttk::style configure List.Treeview -indent 0
#ttk::style map List.Treeview -indent [list disabled 0 active 0]
$ignoresList configure -show tree -selectmode browse \
-style List.Treeview
$ignoresList column #0 -anchor w -stretch true
ttk::scrollbar .ignoresForm.ignoresListFrame.scrolly -orient vertical \
-command {.ignoresForm.ignoresListFrame.ignoresList yview}

By default a ttk::treeview has an -indent of 20 pixels which makes sense
for trees but is not needed for lists.

In the code above I've tried to create a custom style to apply to one treeview but it has no effect whether I use ttk::style configure or ttk::style map.

What is the correct way to do this?

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From Newsgroup: comp.lang.tcl

On Thu, 17 Jul 2025 12:36:45 -0300, Emiliano wrote:

On Thu, 17 Jul 2025 07:36:19 -0000 (UTC)
Mark Summerfield <m.n.summerfield@gmail.com> wrote:

I am using one particular ttk::treeview as a listbox:

ttk::frame .ignoresForm.ignoresListFrame
set ignoresList [ttk::treeview \
.ignoresForm.ignoresListFrame.ignoresList -striped true \
-yscrollcommand {.ignoresForm.ignoresListFrame.scrolly set}]
ttk::style configure List.Treeview -indent 0
#ttk::style map List.Treeview -indent [list disabled 0 active 0]
$ignoresList configure -show tree -selectmode browse \
-style List.Treeview
$ignoresList column #0 -anchor w -stretch true
ttk::scrollbar .ignoresForm.ignoresListFrame.scrolly -orient vertical \ >> -command {.ignoresForm.ignoresListFrame.ignoresList yview}

By default a ttk::treeview has an -indent of 20 pixels which makes sense
for trees but is not needed for lists.

In the code above I've tried to create a custom style to apply to one
treeview but it has no effect whether I use ttk::style configure or
ttk::style map.

What is the correct way to do this?

Use

ttk::style configure List.Treeview.Item -indicatorsize 0

to suppress the space reserved for the open/close indicator. This might be ignored on Win/Mac with native themes.

Regards

Thank you Emiliano, that worked great!

I used:

ttk::frame .ignoresForm.ignoresListFrame
set ignoresList [ttk::treeview \
.ignoresForm.ignoresListFrame.ignoresList -striped true \
-yscrollcommand {.ignoresForm.ignoresListFrame.scrolly set}]
ttk::style configure List.Treeview.Item -indicatorsize 0
$ignoresList configure -show tree -selectmode browse \
-style List.Treeview
$ignoresList column #0 -anchor w -stretch true
ttk::scrollbar .ignoresForm.ignoresListFrame.scrolly -orient vertical \
-command {.ignoresForm.ignoresListFrame.ignoresList yview}

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