diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index c3e11c076..5d527c818 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -5667,6 +5667,11 @@ void ImProcFunctions::rgb2lab(const Imagefloat &src, LabImage &dst, const Glib::
 }
 
 void ImProcFunctions::rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings) const
+{
+    rgb2lab(src, x, y, w, h, L, a, b, icm, consider_histogram_settings, multiThread);
+}
+
+void ImProcFunctions::rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings, bool multiThread)
 {
     // Adapted from ImProcFunctions::lab2rgb
     const int src_width = src.getWidth();
@@ -5779,6 +5784,21 @@ void ImProcFunctions::rgb2lab(const Image8 &src, int x, int y, int w, int h, flo
     }
 }
 
+void ImProcFunctions::rgb2lab(std::uint8_t red, std::uint8_t green, std::uint8_t blue, float &L, float &a, float &b, const procparams::ColorManagementParams &icm, bool consider_histogram_settings)
+{
+    float l_channel[1];
+    float a_channel[1];
+    float b_channel[1];
+    rtengine::Image8 buf(1, 1);
+    buf.r(0, 0) = red;
+    buf.g(0, 0) = green;
+    buf.b(0, 0) = blue;
+    ImProcFunctions::rgb2lab(buf, 0, 0, 1, 1, l_channel, a_channel, b_channel, icm, consider_histogram_settings, false);
+    L = l_channel[0];
+    a = a_channel[0];
+    b = b_channel[0];
+}
+
 void ImProcFunctions::lab2rgb(const LabImage &src, Imagefloat &dst, const Glib::ustring &workingSpace)
 {
     TMatrix wiprof = ICCStore::getInstance()->workingSpaceInverseMatrix(workingSpace);
diff --git a/rtengine/improcfun.h b/rtengine/improcfun.h
index 36c571291..3fddbd753 100644
--- a/rtengine/improcfun.h
+++ b/rtengine/improcfun.h
@@ -116,6 +116,7 @@ class ImProcFunctions
     bool multiThread;
 
     void calcVignettingParams(int oW, int oH, const procparams::VignettingParams& vignetting, double &w2, double &h2, double& maxRadius, double &v, double &b, double &mul);
+    static void rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings, bool multithread);
 
     void transformLuminanceOnly(Imagefloat* original, Imagefloat* transformed, int cx, int cy, int oW, int oH, int fW, int fH);
     void transformGeneral(bool highQuality, Imagefloat *original, Imagefloat *transformed, int cx, int cy, int sx, int sy, int oW, int oH, int fW, int fH, const LensCorrection *pLCPMap, bool useOriginalBuffer);
@@ -497,6 +498,7 @@ enum class BlurType {
 
     Image8*     lab2rgb(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true);
     void rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true) const;
+    static void rgb2lab(std::uint8_t red, std::uint8_t green, std::uint8_t blue, float &L, float &a, float &b, const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true);
     Imagefloat*    lab2rgbOut(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm);
     // CieImage *ciec;
     void workingtrc(const Imagefloat* src, Imagefloat* dst, int cw, int ch, int mul, Glib::ustring &profile, double gampos, double slpos, int &illum, int prim, cmsHTRANSFORM &transform, bool normalizeIn = true, bool normalizeOut = true, bool keepTransForm = false) const;
diff --git a/rtgui/cropwindow.cc b/rtgui/cropwindow.cc
index c7d7348b3..0cd6f3f6c 100644
--- a/rtgui/cropwindow.cc
+++ b/rtgui/cropwindow.cc
@@ -403,7 +403,7 @@ void CropWindow::buttonPress (int button, int type, int bstate, int x, int y)
                             // Add a new Color Picker
                             rtengine::Coord imgPos;
                             screenCoordToImage(x, y, imgPos.x, imgPos.y);
-                            LockableColorPicker *newPicker = new LockableColorPicker(this, &cropHandler.colorParams->outputProfile, &cropHandler.colorParams->workingProfile);
+                            LockableColorPicker *newPicker = new LockableColorPicker(this, cropHandler.colorParams.get());
                             colorPickers.push_back(newPicker);
                             hoveredPicker = newPicker;
                             updateHoveredPicker(&imgPos);
@@ -1095,10 +1095,10 @@ void CropWindow::pointerMoved (int bstate, int x, int y)
                 printf("Using \"%s\" output\n", outputProfile.c_str());
                 if(outputProfile==options.rtSettings.srgb) printf("OK SRGB2");
             */
-            pmlistener->pointerMoved (false, cropHandler.colorParams->outputProfile, cropHandler.colorParams->workingProfile, mx, my, -1, -1, -1);
+            pmlistener->pointerMoved (false, *cropHandler.colorParams, mx, my, -1, -1, -1);
 
             if (pmhlistener) {
-                pmhlistener->pointerMoved (false, cropHandler.colorParams->outputProfile, cropHandler.colorParams->workingProfile, mx, my, -1, -1, -1);
+                pmhlistener->pointerMoved (false, *cropHandler.colorParams, mx, my, -1, -1, -1);
             }
 
         } else {
@@ -1145,11 +1145,11 @@ void CropWindow::pointerMoved (int bstate, int x, int y)
 
                 // Updates the Navigator
                 // TODO: possible double color conversion if rval, gval, bval come from cropHandler.cropPixbuftrue ? see issue #4583
-                pmlistener->pointerMoved (true, cropHandler.colorParams->outputProfile, cropHandler.colorParams->workingProfile, mx, my, rval, gval, bval, isRaw);
+                pmlistener->pointerMoved (true, *cropHandler.colorParams, mx, my, rval, gval, bval, isRaw);
 
                 if (pmhlistener) {
                     // Updates the HistogramRGBArea
-                    pmhlistener->pointerMoved (true, cropHandler.colorParams->outputProfile, cropHandler.colorParams->workingProfile, mx, my, rval, gval, bval);
+                    pmhlistener->pointerMoved (true, *cropHandler.colorParams, mx, my, rval, gval, bval);
                 }
             }
         }
diff --git a/rtgui/histogrampanel.cc b/rtgui/histogrampanel.cc
index 6bda0812e..821f6f0be 100644
--- a/rtgui/histogrampanel.cc
+++ b/rtgui/histogrampanel.cc
@@ -22,10 +22,11 @@
 #include "options.h"
 #include <cstring>
 #include <cmath>
-#include "../rtengine/array2D.h"
-#include "../rtengine/LUT.h"
 #include "rtimage.h"
+#include "../rtengine/array2D.h"
 #include "../rtengine/color.h"
+#include "../rtengine/improcfun.h"
+#include "../rtengine/LUT.h"
 
 using namespace rtengine;
 
@@ -34,12 +35,20 @@ constexpr float HistogramArea::MIN_BRIGHT;
 
 using ScopeType = Options::ScopeType;
 
+
+namespace
+{
+
+const rtengine::procparams::ColorManagementParams DEFAULT_CMP;
+
+}
+
 //
 //
 // HistogramPanel
 HistogramPanel::HistogramPanel () :
     pointer_moved_delayed_call(
-        [this](bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int r, int g, int b)
+        [this](bool validPos, const rtengine::procparams::ColorManagementParams *cmp, int r, int g, int b)
         {
             bool update_hist_area;
 
@@ -52,9 +61,9 @@ HistogramPanel::HistogramPanel () :
             } else {
                 // do something to show vertical bars
                 if (histogramRGBArea) {
-                    histogramRGBArea->updateBackBuffer(r, g, b, profile, profileW);
+                    histogramRGBArea->updateBackBuffer(r, g, b, cmp);
                 }
-                update_hist_area = histogramArea->updatePointer(r, g, b, profile, profileW);
+                update_hist_area = histogramArea->updatePointer(r, g, b, cmp);
             }
             if (histogramRGBArea) {
                 histogramRGBArea->queue_draw();
@@ -623,9 +632,9 @@ void HistogramPanel::setHistRGBInvalid ()
     histogramRGBArea->queue_draw ();
 }
 
-void HistogramPanel::pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool isRaw)
+void HistogramPanel::pointerMoved(bool validPos, const rtengine::procparams::ColorManagementParams &cmp, int x, int y, int r, int g, int b, bool isRaw)
 {
-    pointer_moved_delayed_call(validPos, profile, profileW, r, g, b);
+    pointer_moved_delayed_call(validPos, &cmp, r, g, b);
 }
 
 /*
@@ -797,7 +806,7 @@ void HistogramRGBArea::setShow(bool show)
     showMode = show;
 }
 
-void HistogramRGBArea::updateBackBuffer (int r, int g, int b, const Glib::ustring &profile, const Glib::ustring &profileW)
+void HistogramRGBArea::updateBackBuffer(int r, int g, int b, const rtengine::procparams::ColorManagementParams *cmp)
 {
     if (!get_realized () || !showMode || !(
         options.histogramScopeType == ScopeType::HISTOGRAM
@@ -856,19 +865,25 @@ void HistogramRGBArea::updateBackBuffer (int r, int g, int b, const Glib::ustrin
                     || options.histogramScopeType == ScopeType::WAVEFORM)
             ) {
                 float Lab_L, Lab_a, Lab_b;
-                rtengine::Color::rgb2lab01(profile, profileW, r / 255.f, g / 255.f, b / 255.f, Lab_L, Lab_a, Lab_b, options.rtSettings.HistogramWorking);
+                ImProcFunctions::rgb2lab(
+                    static_cast<std::uint8_t>(r),
+                    static_cast<std::uint8_t>(g),
+                    static_cast<std::uint8_t>(b),
+                    Lab_L, Lab_a, Lab_b,
+                    cmp != nullptr ? *cmp : DEFAULT_CMP,
+                    true);
 
                 if (needLuma) {
                     // Luma
                     cc->set_source_rgb(1.0, 1.0, 1.0);
-                    drawBar(cc, Lab_L, 100.0, winw, winh, s);
+                    drawBar(cc, Lab_L, 32768., winw, winh, s);
                 }
 
                 if (needChroma && options.histogramScopeType == ScopeType::HISTOGRAM) {
                     // Chroma
-                    double chromaval = sqrt(Lab_a * Lab_a + Lab_b * Lab_b) / 1.8;
+                    double chromaval = sqrt(Lab_a * Lab_a + Lab_b * Lab_b) / (255. * 188);
                     cc->set_source_rgb(0.9, 0.9, 0.0);
-                    drawBar(cc, chromaval, 100.0, winw, winh, s);
+                    drawBar(cc, chromaval, 1.0, winw, winh, s);
                 }
             }
         }
@@ -1443,7 +1458,7 @@ void HistogramArea::updateBackBuffer ()
     setDirty(false);
 }
 
-bool HistogramArea::updatePointer(int r, int g, int b, const Glib::ustring &profile, const Glib::ustring &profileW)
+bool HistogramArea::updatePointer(int r, int g, int b, const rtengine::procparams::ColorManagementParams *cmp)
 {
     if (!needPointer || !(scopeType == ScopeType::VECTORSCOPE_HC || scopeType == ScopeType::VECTORSCOPE_HS)) {
         return false;
@@ -1456,7 +1471,16 @@ bool HistogramArea::updatePointer(int r, int g, int b, const Glib::ustring &prof
     pointer_red = r;
     pointer_green = g;
     pointer_blue = b;
-    Color::rgb2lab01(profile, profileW, r / 255.f, g / 255.f, b / 255.f, L, pointer_a, pointer_b, options.rtSettings.HistogramWorking);
+    ImProcFunctions::rgb2lab(
+        static_cast<std::uint8_t>(r),
+        static_cast<std::uint8_t>(g),
+        static_cast<std::uint8_t>(b),
+        L, pointer_a, pointer_b,
+        cmp != nullptr ? *cmp : DEFAULT_CMP,
+        true);
+    L /= 327.68f;
+    pointer_a /= 327.68f;
+    pointer_b /= 327.68f;
     updateBackBuffer();
     return true;
 }
diff --git a/rtgui/histogrampanel.h b/rtgui/histogrampanel.h
index 26b744546..7f165bb15 100644
--- a/rtgui/histogrampanel.h
+++ b/rtgui/histogrampanel.h
@@ -99,7 +99,7 @@ public:
     HistogramRGBArea();
     ~HistogramRGBArea() override;
 
-    void updateBackBuffer (int r, int g, int b, const Glib::ustring &profile = "", const Glib::ustring &profileW = "");
+    void updateBackBuffer(int r, int g, int b, const rtengine::procparams::ColorManagementParams *cmp = nullptr);
     bool getShow ();
     void setShow(bool show);
     void setParent (Gtk::Grid* p)
@@ -206,7 +206,7 @@ public:
 
     void updateBackBuffer ();
     /// Update pointer values. Returns true if widget needs redrawing.
-    bool updatePointer(int r, int g, int b, const Glib::ustring &profile = "", const Glib::ustring &profileW = "");
+    bool updatePointer(int r, int g, int b, const rtengine::procparams::ColorManagementParams *cmp = nullptr);
     void update(
         const LUTu& histRed,
         const LUTu& histGreen,
@@ -260,7 +260,7 @@ public:
 class HistogramPanel final : public Gtk::Grid, public PointerMotionListener, public DrawModeListener, public rtengine::NonCopyable
 {
 private:
-    DelayedCall<bool, Glib::ustring, Glib::ustring, int, int, int> pointer_moved_delayed_call;
+    DelayedCall<bool, const rtengine::procparams::ColorManagementParams *, int, int, int> pointer_moved_delayed_call;
 
 protected:
 
@@ -343,7 +343,7 @@ public:
         histogramArea->update(histRed, histGreen, histBlue, histLuma, histChroma, histRedRaw, histGreenRaw, histBlueRaw, vectorscopeScale, vectorscopeHC, vectorscopeHS, waveformScale, waveformRed, waveformGreen, waveformBlue, waveformLuma);
     }
     // pointermotionlistener interface
-    void pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool isRaw = false) override;
+    void pointerMoved (bool validPos, const rtengine::procparams::ColorManagementParams &cmp, int x, int y, int r, int g, int b, bool isRaw = false) override;
 
     // TODO should be protected
     void setHistRGBInvalid ();
diff --git a/rtgui/lockablecolorpicker.cc b/rtgui/lockablecolorpicker.cc
index 0a08bb945..c87239b9c 100644
--- a/rtgui/lockablecolorpicker.cc
+++ b/rtgui/lockablecolorpicker.cc
@@ -20,15 +20,23 @@
 #include "lockablecolorpicker.h"
 #include "options.h"
 #include "../rtengine/color.h"
+#include "../rtengine/improcfun.h"
 #include "../rtengine/rt_math.h"
 #include "../rtengine/utils.h"
 #include "imagearea.h"
 #include "multilangmgr.h"
 #include "navigator.h"
 
-LockableColorPicker::LockableColorPicker (CropWindow* cropWindow, Glib::ustring *oProfile, Glib::ustring *wProfile)
+namespace
+{
+
+const rtengine::procparams::ColorManagementParams DEFAULT_CMP;
+
+}
+
+LockableColorPicker::LockableColorPicker (CropWindow* cropWindow, rtengine::procparams::ColorManagementParams *color_management_params)
 : cropWindow(cropWindow), displayedValues(ColorPickerType::RGB), position(0, 0), size(Size::S15),
-  outputProfile(oProfile), workingProfile(wProfile), validity(Validity::OUTSIDE),
+  color_management_params(color_management_params), validity(Validity::OUTSIDE),
   r(0.f), g(0.f), b(0.f), rpreview(0.f), gpreview(0.f), bpreview(0.f), hue(0.f), sat(0.f), val(0.f), L(0.f), a(0.f), bb(0.f)
 {}
 
@@ -277,7 +285,16 @@ void LockableColorPicker::setRGB (const float R, const float G, const float B, c
     bpreview = previewB;
 
     rtengine::Color::rgb2hsv01(r, g, b, hue, sat, val);
-    rtengine::Color::rgb2lab01(*outputProfile, *workingProfile, r, g, b, L, a, bb, options.rtSettings.HistogramWorking);  // TODO: Really sure this function works?
+    rtengine::ImProcFunctions::rgb2lab(
+        static_cast<std::uint8_t>(255 * r),
+        static_cast<std::uint8_t>(255 * g),
+        static_cast<std::uint8_t>(255 * b),
+        L, a, bb,
+        color_management_params != nullptr ? *color_management_params : DEFAULT_CMP,
+        true);
+    L /= 327.68f;
+    a /= 327.68f;
+    bb /= 327.68f;
 
     if (validity != Validity::OUTSIDE) {
         setDirty(true);
diff --git a/rtgui/lockablecolorpicker.h b/rtgui/lockablecolorpicker.h
index baeea41ef..b18a56028 100644
--- a/rtgui/lockablecolorpicker.h
+++ b/rtgui/lockablecolorpicker.h
@@ -24,6 +24,18 @@
 
 class CropWindow;
 
+namespace rtengine
+{
+
+namespace procparams
+{
+
+class ColorManagementParams;
+
+}
+
+}
+
 class LockablePickerToolListener
 {
 public:
@@ -60,8 +72,7 @@ private:
     rtengine::Coord position;  // Coordinate in image space
     rtengine::Coord anchorOffset;
     Size size;
-    Glib::ustring *outputProfile;
-    Glib::ustring *workingProfile;
+    rtengine::procparams::ColorManagementParams *color_management_params;
     Validity validity;
     float r, g, b;  // red green blue in [0;1] range
     float rpreview, gpreview, bpreview;
@@ -72,7 +83,7 @@ private:
 
 public:
 
-    LockableColorPicker (CropWindow* cropWindow, Glib::ustring *oProfile, Glib::ustring *wProfile);
+    LockableColorPicker (CropWindow* cropWindow, rtengine::procparams::ColorManagementParams *color_management_params);
 
     void draw (const Cairo::RefPtr<Cairo::Context> &cr);
 
diff --git a/rtgui/navigator.cc b/rtgui/navigator.cc
index 42f605fa2..042f57a00 100644
--- a/rtgui/navigator.cc
+++ b/rtgui/navigator.cc
@@ -21,18 +21,26 @@
 #include "previewwindow.h"
 #include "toolpanel.h"
 #include "../rtengine/color.h"
+#include "../rtengine/improcfun.h"
 #include "../rtengine/rt_math.h"
 #include "options.h"
 
 using namespace rtengine;
 
+namespace
+{
+
+const rtengine::procparams::ColorManagementParams DEFAULT_CMP;
+
+}
+
 Navigator::Navigator() :
     pointer_moved_delayed_call(50, 100),
     currentRGBUnit(options.navRGBUnit),
     currentHSVUnit(options.navHSVUnit)
 {
     pointer_moved_delayed_call.setFunction(
-        [this](bool validPos, Glib::ustring profile, Glib::ustring profileW, int x, int y, int r, int g, int b, bool isRaw)
+        [this](bool validPos, const rtengine::procparams::ColorManagementParams *cmp, int x, int y, int r, int g, int b, bool isRaw)
         {
             if (!validPos) {
                 setInvalid (x, y);
@@ -61,7 +69,16 @@ Navigator::Navigator() :
                     S->set_text (s2);
                     V->set_text (s3);
 
-                    Color::rgb2lab01(profile, profileW, r / 255.f, g / 255.f, b / 255.f, LAB_l, LAB_a, LAB_b, options.rtSettings.HistogramWorking);  // TODO: Really sure this function works?
+                    ImProcFunctions::rgb2lab(
+                        static_cast<std::uint8_t>(r),
+                        static_cast<std::uint8_t>(g),
+                        static_cast<std::uint8_t>(b),
+                        LAB_l, LAB_a, LAB_b,
+                        cmp != nullptr ? *cmp : DEFAULT_CMP,
+                        true);
+                    LAB_l /= 327.68f;
+                    LAB_a /= 327.68f;
+                    LAB_b /= 327.68f;
                     getLABText (LAB_l, LAB_a, LAB_b, s1, s2, s3);
                     LAB_L->set_text (s1);
                     LAB_A->set_text (s2);
@@ -328,9 +345,9 @@ void Navigator::getLABText (float l, float a, float b, Glib::ustring &sL, Glib::
 }
 
 // if !validPos then x/y contain the full image size
-void Navigator::pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool isRaw)
+void Navigator::pointerMoved (bool validPos, const rtengine::procparams::ColorManagementParams &cmp, int x, int y, int r, int g, int b, bool isRaw)
 {
-    pointer_moved_delayed_call(validPos, profile, profileW, x, y, r, g, b, isRaw);
+    pointer_moved_delayed_call(validPos, &cmp, x, y, r, g, b, isRaw);
 }
 
 void Navigator::cycleUnitsRGB (GdkEventButton *event) {
diff --git a/rtgui/navigator.h b/rtgui/navigator.h
index 4c2a3fd32..c16bf7ac7 100644
--- a/rtgui/navigator.h
+++ b/rtgui/navigator.h
@@ -34,7 +34,7 @@ class Navigator final :
     typedef const double (*TMatrix)[3];
 
 private:
-    DelayedCall<bool, Glib::ustring, Glib::ustring, int, int, int, int, int, bool> pointer_moved_delayed_call;
+    DelayedCall<bool, const rtengine::procparams::ColorManagementParams *, int, int, int, int, int, bool> pointer_moved_delayed_call;
 
     Options::NavigatorUnit currentRGBUnit;
     Options::NavigatorUnit currentHSVUnit;
@@ -61,7 +61,7 @@ public:
 
     // pointermotionlistener interface
     //  void pointerMoved (bool validPos, int x, int y, int r, int g, int b);
-    void pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool raw = false) override;
+    void pointerMoved(bool validPos, const rtengine::procparams::ColorManagementParams &cmp, int x, int y, int r, int g, int b, bool raw = false) override;
     void setInvalid (int fullWidth = -1, int fullHeight = -1);
 
     void getRGBText (int r, int g, int b, Glib::ustring &sR, Glib::ustring &sG, Glib::ustring &sB, bool isRaw = false) override;
diff --git a/rtgui/pointermotionlistener.h b/rtgui/pointermotionlistener.h
index 26ca994b0..f9fda419c 100644
--- a/rtgui/pointermotionlistener.h
+++ b/rtgui/pointermotionlistener.h
@@ -18,6 +18,23 @@
  */
 #pragma once
 
+#include <glibmm/ustring.h>
+#include <sigc++/sigc++.h>
+
+
+namespace rtengine
+{
+
+namespace procparams
+{
+
+class ColorManagementParams;
+
+}
+
+}
+
+
 class PointerMotionListener
 {
 protected:
@@ -26,7 +43,7 @@ protected:
 
 public:
     virtual ~PointerMotionListener() = default;
-    virtual void pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool isRaw = false) = 0;
+    virtual void pointerMoved(bool validPos, const rtengine::procparams::ColorManagementParams &cmp, int x, int y, int r, int g, int b, bool isRaw = false) = 0;
     virtual void getRGBText (int r, int g, int b, Glib::ustring &sR, Glib::ustring &sG, Glib::ustring &sB, bool isRaw = false) { sR = "--"; sG = "--"; sB = "--"; }
     virtual void getHSVText (float h, float s, float v, Glib::ustring &sH, Glib::ustring &sS, Glib::ustring &sV) { sH = "--"; sS = "--"; sV = "--"; }
     virtual void getLABText (float l, float a, float b, Glib::ustring &sL, Glib::ustring &sA, Glib::ustring &sB) { sL = "--"; sA = "--"; sB = "--"; }