I have recently become very comfortable with KDE but have a significant problem when using applications that are not K based.
Regardless of my mouse settings 'double-click' (dc) simply is unusable. I gather from other postings this is caused by the dc interval being automatically reduced to 200 ms. ... which is far faster than my hand normally operates.

The KDE applications are fine in themselves but there needs to be an allowance for non-K apps in this world. Unfortunately my primary app requirement is not K based so despite enjoying the overall K desktop, unless I can find a solution, I will return to something more prosaic.

If there are solutions I would be most grateful to hear of them.

David

if KDE and other apps share the interval then http://www.bbc.co.uk/accessibility/guid ... linux/kde/


now if your distro doesn't sync KDE's interval with other apps then this sounds interesting (and relavent) https://www.kubuntuforums.net/showthrea ... rval/page2

Kde uses qt while gnome, firefox, chrome,and others use gtk. System settings in Ubuntu's port of kde only sets the double click inteval for qt. Hence gtk apps are left at 200ms (default).

A workaround for this:

edit ~/.gtkrc-2.0
add gtk-double-click-time = 800 (800 is ms, change as desired)

Restart gtk applications and they should work.

This is still a bug as other distros synchronize the interval automatically.

Thanks for the response ... unfortunately it does not appear to change the situation.
I did leave the value at 800, which is far more than I need.
Logged-out and also tried with full reboot. Tried with and without spaces around the '='.
Any further ideas?

David

1st a little info - what distro and what are the apps? are they gtk?

maybe the apps are gtk3 and you'd need to edit the ~/gtkrc-3.0 file (if there is one used) instead of the 2.0 one noted in the quoted passage. do you have the Gnome control app installed and does it have the option to set interval?

you may be better off asking on a more relevant such as Gnome's if they are Gnome apps or your distro's

There is no sign of gtkrc-3.0 on my system
Distro: OpenSUSE-13.1 and my 'primary' app that I am trying to run is darktable which uses also a 'darktable-gtkrc' to set the screen layout.
The problem is not solely related however to a single app. For instance, editing this post in Firefox I am unable to select single words with double click ...

David

you could try this suggestion from https://www.kubuntuforums.net/archive/i ... 53540.html

Feb 19th 2012, 04:25 PM
In this thread yesturday, I said that the problem was narrowed down to ubuntu's port of KDE. I have t ried .xresources to no avail:

echo *multiClickTime: 800 >~/.Xresources
xrdb -merge .Xresources

The same versions of kubuntu when booted to Unity or any version of gnome work fine work fine as well as other distros of KDE.

Kubuntu has a bug (easily repeatable): mouse settings change mouse double click interval correctly, but the interval for non-KDE apps (firefox, chrome,etc) stays at about 200 ms. This bug has persisted through different versions probably because most people don't notice. I asked my wife to try to double click select text in Chrome on Kubuntu 11.10 and it works without fail.

As a workaround I installed mousetweaks and wrote a bash script:

#!/bin/bash
/usr/bin/mousetweaks --dwell --dwell-time=1.2 -t 20 --ssc --ssc-time 1.2

I then added the the script to startup in KDE.

The use of 'mousetweaks' is interesting but having a secondary window on the screen through which one needs to pass the mouse clicks is more than a little trying and primitive. It also appears to alter some other basic keystrokes.

David

did you try editing .xresources?

the equivalent to ~/.gtkrc-2.0 for gtk 3 is per https://mail.gnome.org/archives/gtk-lis ... 00108.html

The equivalent to .gtkrc-2.0 in gtk+3 is a combination of files : in brief :

settings :
set either (preferably) by the desktop XSettings manager (e.g. Gnome settings)
or in a file
${XDG_CONFIG_HOME}/gtk-3.0/settings.ini

There is more described in the gtk+3 reference

haven't used mousetweaks so didn't know how/if it would work

Can you post the contents of the darktable-gtkrc file please? It may be that Darktable is using it's own gtkrc file instead of the user wide one, which is why the other preferences are not being applied.

# from art.gnome.org: marble-look, adjusted
style "clearlooks-default"
{

GtkWindow::resize-grip-height = 0
GtkWindow::resize-grip-width = 0
GtkScrollbar::slider_width = 16
GtkScrollbar::stepper_size = 16
GtkScrolledWindow::scrollbar-spacing = 2
GtkScrolledWindow::scrollbar-within-bevel = TRUE
GtkScrolledWindow::shadow-type = GTK_SHADOW_NONE
GtkScrolledWindow::draw_border = { 0, 0, 0, 0 }
GtkScrollbar::draw_border = { 0, 0, 0, 0 }
GtkScrollbar::shadow-type = GTK_SHADOW_NONE
GtkMenuItem::selected_shadow_type = out
GtkWidget::interior_focus = 1
GtkWidget::focus-line-width = 1
GtkScrollbar::focus_padding = 0
GtkScrolledWindow::focus_padding = 0
GtkButton::default_border = { 0, 0, 0, 0 }
GtkButton::default_outside_border = { 0, 0, 0, 0 }
GtkRange::trough_border = 0
GtkWidget::focus_padding = 1
GtkPaned::handle_size = 6
GtkRange::slider_width = 11
GtkRange::stepper_size = 11
GtkScrollbar::trough-border = 0
GtkScrollbar::has-forward-stepper = 1
GtkScrollbar::has-backward-stepper = 1
GtkScrollbar::arrow_scaling = 0.5
GtkScrollbar::min_slider_length = 30
GtkCheckButton::indicator_size = 12
GtkMenuBar::internal-padding = 0
#GtkOptionMenu::indicator_size = { 11, 6 }
#GtkOptionMenu::indicator_spacing = { 4, 5, 2, 2 }
GtkTreeView::expander_size = 14
GtkTreeView::odd_row_color = "#1E1E1E"
GtkTreeView::even_row_color = "#1E1E1E"
GtkExpander::expander_size = 12
GtkExpander::focus-padding = 2
GtkProgressBar::min-horizontal-bar-height = 12
font_name = "Sans 8"

xthickness = 2
ythickness = 2
fg[NORMAL] = "#cacaca"
fg[ACTIVE] = "#cacaca"
fg[INSENSITIVE] = "#000000"
fg[PRELIGHT] = "#cacaca"
fg[SELECTED] = "#cacaca"

bg[ACTIVE] = "#494949"
bg[NORMAL] = "#212121"
bg[INSENSITIVE] = "#505050"
bg[PRELIGHT] = "#6C6C6C"
bg[SELECTED] = "#353535"

base[NORMAL] = "#212121"
base[ACTIVE] = "#5A5C5F"
base[INSENSITIVE] = "#5A5C5F"
base[PRELIGHT] = "#646668"
# active plugins:
base[SELECTED] = "#353535"

text[NORMAL] = "#CACAC6"
text[ACTIVE] = "#000000"
text[PRELIGHT] = "#000000"
text[SELECTED] = "#E0E0E0"
text[INSENSITIVE] = "#777777"

engine "clearlooks"
{
contrast = 1.0
# sunkenmenubar = 1
}
}

style "clearlooks-wide" = "clearlooks-default"
{
xthickness = 2
ythickness = 2
}

style "clearlooks-notebook" = "clearlooks-wide"
{
# interestingly, notebook swaps the meaning of these two:
bg[NORMAL] = "#494949"
bg[ACTIVE] = "#212121"

engine "clearlooks"
{
style = GLOSSY
}
}

style "clearlooks-tasklist" = "clearlooks-default"
{
xthickness = 5
ythickness = 3
}

style "clearlooks-menu" = "clearlooks-default"
{
xthickness = 2
ythickness = 1
}

style "clearlooks-menu-item" = "clearlooks-default"
{
xthickness = 2
ythickness = 3
}

style "clearlooks-menu-itembar" = "clearlooks-default"
{
xthickness = 3
ythickness = 3
}
style "clearlooks-tree" = "clearlooks-default"
{
xthickness = 2
ythickness = 2
}

style "clearlooks-frame-title" = "clearlooks-default"
{
fg[NORMAL] = "#FFFFFF"
}

style "clearlooks-brightbg" = "clearlooks-default"
{
bg[NORMAL] = "#292929"
}

style "clearlooks-vbrightbg" = "clearlooks-default"
{
bg[NORMAL] = "#606060"
bg[PRELIGHT] = "#D0D0D0"
}

style "clearlooks-entry" = "clearlooks-default"
{
fg[NORMAL] = "#CACAC6"
fg[ACTIVE] = "#CACAC6"
fg[INSENSITIVE] = "#000000"
fg[PRELIGHT] = "#E2E2E2"
fg[SELECTED] = "#E2E2E2"

bg[ACTIVE] = "#494949"
bg[NORMAL] = "#212121"
bg[INSENSITIVE] = "#505050"
bg[PRELIGHT] = "#6C6C6C"
bg[SELECTED] = "#353535"

base[NORMAL] = "#919499"
base[ACTIVE] = "#5A5C5F"
base[INSENSITIVE] = "#5A5C5F"
base[PRELIGHT] = "#646668"
# active plugins:
base[SELECTED] = "#353535"

text[NORMAL] = "#CACAC6"
text[ACTIVE] = "#000000"
text[PRELIGHT] = "#000000"
text[SELECTED] = "#E0E0E0"
text[INSENSITIVE] = "#777777"
}

style "clearlooks-panel" = "clearlooks-default"
{
xthickness = 3
ythickness = 3
}

style "clearlooks-tooltips" = "clearlooks-default"
{
xthickness = 4
ythickness = 4
bg[NORMAL] = "#404040"
}
style "clearlooks-progressbar" = "clearlooks-default"
{
xthickness = 0
ythickness = 0
fg[PRELIGHT] = "#000000"
}

style "clearlooks-combo" = "clearlooks-default"
{
xthickness = 1
ythickness = 2
}

style "clearlooks-checkbutton" = "clearlooks-default"
{
text[NORMAL] = "#202020"
}

style "scale-fixed-font" = "clearlooks-default"
{
font_name = "Monospace 8"
}

style "clearlooks-header" = "clearlooks-default"
{
text[NORMAL] = "#7f7f7f"
text[PRELIGHT] = "#e2e2e2"
fg[NORMAL] = "#7f7f7f"
fg[ACTIVE] = "#B0B0B0"
fg[PRELIGHT] = "#e2e2e2"
font_name = "Sans bold 9"
}

style "clearlooks-plugin" = "clearlooks-default"
{
bg[NORMAL] = "#252525"
}

style "clearlooks-scrollbar" = "clearlooks-defaults"
{
bg[INSENSITIVE] = "#1a1a1a"

xthickness = 0
ythickness = 0
GtkRange::stepper-size = 0
GtkRange::stepper-spacing = 0
GtkRange::trough-border = 0
GtkRange::slider-width = 13
GtkScale::trough-side-details = 0
GtkScrollbar::activate-slider = 0
GtkScrollbar::shadow-type = GTK_SHADOW_NONE
GtkScrollbar::internal-padding = 0
GtkScrollbar::horizontal-padding = 0
GtkScrollbar::vertical-padding = 0
GtkScrollbar::padding = 0
GtkScrollbar::focus-padding = 0
}

style "clearlooks-header-panel-label"
{
fg[NORMAL] = "white"
}

style "metacity-frame"
{
# Normal base color
fg[NORMAL] = "#333333"

# Unfocused title background color
#bg[INSENSITIVE] = { 0.8, 0.8, 0.8 }
bg[INSENSITIVE] = "#333333"

# Unfocused title text color
#fg[INSENSITIVE] = { 1.55, 1.55, 1.55 }
fg[NORMAL] = "#CACAC6"

# Focused icon color
#fg[NORMAL] = { 0.2, 0.2, 0.2 }

# Focused title background color
bg[SELECTED] = "#505050"

# Focused title text color
fg[SELECTED] = "#E2E2E2"
}

class "GtkWidget" style "clearlooks-default"
#class "GtkButton" style "clearlooks-wide"
#class "GtkCheckButton" style "clearlooks-checkbutton"
#class "GtkRange" style "clearlooks-wide"
#class "GtkScale" style "scale-fixed-font"
#class "GtkFrame" style "clearlooks-wide"
#class "GtkStatusbar" style "clearlooks-wide"
#class "GtkMenu" style "clearlooks-menu"
#class "GtkMenuItem" style "clearlooks-menu-item"
class "GtkRange" style "clearlooks-scrollbar"
widget "*.plugins_vbox.GtkEventBox" style "clearlooks-brightbg"
widget "*.plugins_vbox_left.GtkEventBox" style "clearlooks-brightbg"
widget "*.plugins_vbox_left.*.GtkTable.*" style "clearlooks-plugin"
# widget "*.left_scrolled.GtkEventBox" style "clearlooks-brightbg"
#widget "*.GtkEventBox.GtkVBox.GtkHBox.GtkButton" style "clearlooks-vbrightbg"

widget "*.header_label" style "clearlooks-header"
widget "*.panel_label" style "clearlooks-header-panel-label"

widget "*.right.GtkEventBox" style "clearlooks-brightbg"
widget "*.left.GtkEventBox" style "clearlooks-brightbg"

# entry and tree
# class "GtkEntry" style "clearlooks-entry"

widget_class "*.GtkFrame.GtkEventBox" style "clearlooks-plugin"
widget "*.dt-plugin-ui" style "clearlooks-plugin"

widget "*.background_job_eventbox" style "clearlooks-brightbg"
#widget_class "*.GtkMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkAccelMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkRadioMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkCheckMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkImageMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkSeparatorMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.tooltips.*.GtkToggleButton" style "clearlooks-tasklist"
#widget_class "*.GtkTreeView.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkCTree.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkList.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkCList.GtkButton" style "clearlooks-tree"
widget "*.darktable_label" style "clearlooks-header"
widget "*.view_label" style "clearlooks-header"
#widget_class "BasePWidget.GtkEventBox.GtkTable.GtkFrame" style "clearlooks-panel"
widget "gtk-tooltip*" style "clearlooks-tooltips"
class "GtkNotebook" style "clearlooks-notebook"
#class "GtkProgressBar" style "clearlooks-progressbar"
#widget_class "*.GtkComboBox.GtkButton" style "clearlooks-combo"
#widget_class "*.GtkCombo.GtkButton" style "clearlooks-combo"
#class "MetaFrames" style "metacity-frame"

widget "*.preferences_notebook.*.GtkViewport" style "clearlooks-notebook"

@davidvj please use the code tag or something like pastebin when posting large amounts of text, see

the resulting post will then be:

Code: Select all

# from art.gnome.org: marble-look, adjusted
style "clearlooks-default"
{

 GtkWindow::resize-grip-height = 0
 GtkWindow::resize-grip-width = 0
 GtkScrollbar::slider_width = 16
 GtkScrollbar::stepper_size = 16
 GtkScrolledWindow::scrollbar-spacing = 2
 GtkScrolledWindow::scrollbar-within-bevel = TRUE
 GtkScrolledWindow::shadow-type = GTK_SHADOW_NONE
 GtkScrolledWindow::draw_border = { 0, 0, 0, 0 }
 GtkScrollbar::draw_border = { 0, 0, 0, 0 }
 GtkScrollbar::shadow-type = GTK_SHADOW_NONE
 GtkMenuItem::selected_shadow_type = out
 GtkWidget::interior_focus = 1
 GtkWidget::focus-line-width = 1
 GtkScrollbar::focus_padding = 0
 GtkScrolledWindow::focus_padding = 0
 GtkButton::default_border = { 0, 0, 0, 0 }
 GtkButton::default_outside_border = { 0, 0, 0, 0 }
 GtkRange::trough_border = 0
 GtkWidget::focus_padding = 1
 GtkPaned::handle_size = 6
 GtkRange::slider_width = 11
 GtkRange::stepper_size = 11
 GtkScrollbar::trough-border = 0
 GtkScrollbar::has-forward-stepper = 1
 GtkScrollbar::has-backward-stepper = 1
 GtkScrollbar::arrow_scaling = 0.5
 GtkScrollbar::min_slider_length = 30
 GtkCheckButton::indicator_size = 12
 GtkMenuBar::internal-padding = 0
 #GtkOptionMenu::indicator_size = { 11, 6 }
 #GtkOptionMenu::indicator_spacing = { 4, 5, 2, 2 }
 GtkTreeView::expander_size = 14
 GtkTreeView::odd_row_color = "#1E1E1E"
 GtkTreeView::even_row_color = "#1E1E1E"
 GtkExpander::expander_size = 12
 GtkExpander::focus-padding = 2
 GtkProgressBar::min-horizontal-bar-height = 12
 font_name = "Sans 8"

 xthickness = 2
 ythickness = 2
 fg[NORMAL] = "#cacaca"
 fg[ACTIVE] = "#cacaca"
 fg[INSENSITIVE] = "#000000"
 fg[PRELIGHT] = "#cacaca"
 fg[SELECTED] = "#cacaca"

 bg[ACTIVE] = "#494949"
 bg[NORMAL] = "#212121"
 bg[INSENSITIVE] = "#505050"
 bg[PRELIGHT] = "#6C6C6C"
 bg[SELECTED] = "#353535"

 base[NORMAL] = "#212121"
 base[ACTIVE] = "#5A5C5F"
 base[INSENSITIVE] = "#5A5C5F"
 base[PRELIGHT] = "#646668"
 # active plugins:
 base[SELECTED] = "#353535"

 text[NORMAL] = "#CACAC6"
 text[ACTIVE] = "#000000"
 text[PRELIGHT] = "#000000"
 text[SELECTED] = "#E0E0E0"
 text[INSENSITIVE] = "#777777"

 engine "clearlooks"
 {
 contrast = 1.0
# sunkenmenubar = 1
 }
}

style "clearlooks-wide" = "clearlooks-default"
{
 xthickness = 2
 ythickness = 2
}

style "clearlooks-notebook" = "clearlooks-wide"
{
 # interestingly, notebook swaps the meaning of these two:
 bg[NORMAL] = "#494949"
 bg[ACTIVE] = "#212121"

 engine "clearlooks"
 {
 style = GLOSSY
 }
}

style "clearlooks-tasklist" = "clearlooks-default"
{
 xthickness = 5
 ythickness = 3
}

style "clearlooks-menu" = "clearlooks-default"
{
 xthickness = 2
 ythickness = 1
}

style "clearlooks-menu-item" = "clearlooks-default"
{
 xthickness = 2
 ythickness = 3
}

style "clearlooks-menu-itembar" = "clearlooks-default"
{
 xthickness = 3
 ythickness = 3
}
style "clearlooks-tree" = "clearlooks-default"
{
 xthickness = 2
 ythickness = 2
}

style "clearlooks-frame-title" = "clearlooks-default"
{
 fg[NORMAL] = "#FFFFFF"
}

style "clearlooks-brightbg" = "clearlooks-default"
{
 bg[NORMAL] = "#292929"
}

style "clearlooks-vbrightbg" = "clearlooks-default"
{
 bg[NORMAL] = "#606060"
 bg[PRELIGHT] = "#D0D0D0"
}

style "clearlooks-entry" = "clearlooks-default"
{
 fg[NORMAL] = "#CACAC6"
 fg[ACTIVE] = "#CACAC6"
 fg[INSENSITIVE] = "#000000"
 fg[PRELIGHT] = "#E2E2E2"
 fg[SELECTED] = "#E2E2E2"

 bg[ACTIVE] = "#494949"
 bg[NORMAL] = "#212121"
 bg[INSENSITIVE] = "#505050"
 bg[PRELIGHT] = "#6C6C6C"
 bg[SELECTED] = "#353535"

 base[NORMAL] = "#919499"
 base[ACTIVE] = "#5A5C5F"
 base[INSENSITIVE] = "#5A5C5F"
 base[PRELIGHT] = "#646668"
 # active plugins:
 base[SELECTED] = "#353535"

 text[NORMAL] = "#CACAC6"
 text[ACTIVE] = "#000000"
 text[PRELIGHT] = "#000000"
 text[SELECTED] = "#E0E0E0"
 text[INSENSITIVE] = "#777777"
}

style "clearlooks-panel" = "clearlooks-default"
{
 xthickness = 3
 ythickness = 3
}

style "clearlooks-tooltips" = "clearlooks-default"
{
 xthickness = 4
 ythickness = 4
 bg[NORMAL] = "#404040"
}
style "clearlooks-progressbar" = "clearlooks-default"
{
 xthickness = 0
 ythickness = 0
 fg[PRELIGHT] = "#000000"
}

style "clearlooks-combo" = "clearlooks-default"
{
 xthickness = 1
 ythickness = 2
}

style "clearlooks-checkbutton" = "clearlooks-default"
{
 text[NORMAL] = "#202020"
}

style "scale-fixed-font" = "clearlooks-default"
{
 font_name = "Monospace 8"
}

style "clearlooks-header" = "clearlooks-default"
{
 text[NORMAL] = "#7f7f7f"
 text[PRELIGHT] = "#e2e2e2"
 fg[NORMAL] = "#7f7f7f"
 fg[ACTIVE] = "#B0B0B0"
 fg[PRELIGHT] = "#e2e2e2"
 font_name = "Sans bold 9"
}

style "clearlooks-plugin" = "clearlooks-default"
{
 bg[NORMAL] = "#252525"
}

style "clearlooks-scrollbar" = "clearlooks-defaults"
{
 bg[INSENSITIVE] = "#1a1a1a"

 xthickness = 0
 ythickness = 0
 GtkRange::stepper-size = 0
 GtkRange::stepper-spacing = 0
 GtkRange::trough-border = 0
 GtkRange::slider-width = 13
 GtkScale::trough-side-details = 0
 GtkScrollbar::activate-slider = 0
 GtkScrollbar::shadow-type = GTK_SHADOW_NONE
 GtkScrollbar::internal-padding = 0
 GtkScrollbar::horizontal-padding = 0
 GtkScrollbar::vertical-padding = 0
 GtkScrollbar::padding = 0
 GtkScrollbar::focus-padding = 0
}

style "clearlooks-header-panel-label"
{
 fg[NORMAL] = "white"
}

style "metacity-frame"
{
 # Normal base color
 fg[NORMAL] = "#333333"

 # Unfocused title background color
 #bg[INSENSITIVE] = { 0.8, 0.8, 0.8 }
 bg[INSENSITIVE] = "#333333"

 # Unfocused title text color
 #fg[INSENSITIVE] = { 1.55, 1.55, 1.55 }
 fg[NORMAL] = "#CACAC6"

 # Focused icon color
 #fg[NORMAL] = { 0.2, 0.2, 0.2 }

 # Focused title background color
 bg[SELECTED] = "#505050"

 # Focused title text color
 fg[SELECTED] = "#E2E2E2"
}

class "GtkWidget" style "clearlooks-default"
#class "GtkButton" style "clearlooks-wide"
#class "GtkCheckButton" style "clearlooks-checkbutton"
#class "GtkRange" style "clearlooks-wide"
#class "GtkScale" style "scale-fixed-font"
#class "GtkFrame" style "clearlooks-wide"
#class "GtkStatusbar" style "clearlooks-wide"
#class "GtkMenu" style "clearlooks-menu"
#class "GtkMenuItem" style "clearlooks-menu-item"
class "GtkRange" style "clearlooks-scrollbar"
widget "*.plugins_vbox.GtkEventBox" style "clearlooks-brightbg"
widget "*.plugins_vbox_left.GtkEventBox" style "clearlooks-brightbg"
widget "*.plugins_vbox_left.*.GtkTable.*" style "clearlooks-plugin"
# widget "*.left_scrolled.GtkEventBox" style "clearlooks-brightbg"
#widget "*.GtkEventBox.GtkVBox.GtkHBox.GtkButton" style "clearlooks-vbrightbg"

widget "*.header_label" style "clearlooks-header"
widget "*.panel_label" style "clearlooks-header-panel-label"

widget "*.right.GtkEventBox" style "clearlooks-brightbg"
widget "*.left.GtkEventBox" style "clearlooks-brightbg"

# entry and tree
# class "GtkEntry" style "clearlooks-entry"

widget_class "*.GtkFrame.GtkEventBox" style "clearlooks-plugin"
widget "*.dt-plugin-ui" style "clearlooks-plugin"

widget "*.background_job_eventbox" style "clearlooks-brightbg"
#widget_class "*.GtkMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkAccelMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkRadioMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkCheckMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkImageMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.GtkSeparatorMenuItem.*" style "clearlooks-menu-item"
#widget_class "*.tooltips.*.GtkToggleButton" style "clearlooks-tasklist"
#widget_class "*.GtkTreeView.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkCTree.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkList.GtkButton" style "clearlooks-tree"
#widget_class "*.GtkCList.GtkButton" style "clearlooks-tree"
widget "*.darktable_label" style "clearlooks-header"
widget "*.view_label" style "clearlooks-header"
#widget_class "BasePWidget.GtkEventBox.GtkTable.GtkFrame" style "clearlooks-panel"
widget "gtk-tooltip*" style "clearlooks-tooltips"
class "GtkNotebook" style "clearlooks-notebook"
#class "GtkProgressBar" style "clearlooks-progressbar"
#widget_class "*.GtkComboBox.GtkButton" style "clearlooks-combo"
#widget_class "*.GtkCombo.GtkButton" style "clearlooks-combo"
#class "MetaFrames" style "metacity-frame"

widget "*.preferences_notebook.*.GtkViewport" style "clearlooks-notebook"

As I suspected - this file is an override or replacement to the user-wide Gtk configuration files.
Please repeat the steps in viewtopic.php?f=225&t=122085#p315689 but with the darktable-gtkrc file instead - ensuring Darktable is closed when you do so.

A thousand thanks .... problem solved.