Motif updates

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@864 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/motif/gauge.cpp

@@ -15,10 +15,64 @@
 
 #include "wx/gauge.h"
 
+#include <Xm/Xm.h>
+#include <wx/motif/private.h>
+
 #if !USE_SHARED_LIBRARY
 IMPLEMENT_DYNAMIC_CLASS(wxGauge, wxControl)
 #endif
 
+// XmGauge copyright notice:
+
+/*
+ * Copyright 1994 GROUPE BULL
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of GROUPE BULL not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.  GROUPE BULL makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * GROUPE BULL disclaims all warranties with regard to this software,
+ * including all implied warranties of merchantability and fitness,
+ * in no event shall GROUPE BULL be liable for any special,
+ * indirect or consequential damages or any damages
+ * whatsoever resulting from loss of use, data or profits,
+ * whether in an action of contract, negligence or other tortious
+ * action, arising out of or in connection with the use 
+ * or performance of this software.
+ *
+ */
+
+//// PUBLIC XMGAUGE DECLARATIONS
+typedef struct _XmGaugeClassRec*	XmGaugeWidgetClass;
+typedef struct _XmGaugeRec*	        XmGaugeWidget;
+
+#ifdef __cplusplus
+extern "C" WidgetClass xmGaugeWidgetClass;
+#else
+extern WidgetClass xmGaugeWidgetClass;
+#endif
+
+typedef struct _XmGaugeCallbackStruct{
+    int reason;
+    XEvent *event;
+    int value;
+} XmGaugeCallbackStruct;
+
+
+void
+XmGaugeSetValue(Widget w, int value);
+
+int
+XmGaugeGetValue(Widget w);
+
+
+
 bool wxGauge::Create(wxWindow *parent, wxWindowID id,
            int range,
            const wxPoint& pos,
@@ -39,57 +93,667 @@ bool wxGauge::Create(wxWindow *parent, wxWindowID id,
     else
 	    m_windowId = id;
 
+    Widget parentWidget = (Widget) parent->GetClientWidget();
 
-    // TODO
-    return FALSE;
+    Arg args[4];
+    int count = 4;
+    if (style & wxHORIZONTAL)
+    {
+        XtSetArg (args[0], XmNorientation, XmHORIZONTAL);
+        XtSetArg (args[1], XmNprocessingDirection, XmMAX_ON_RIGHT);
+    }
+    else
+    {
+        XtSetArg (args[0], XmNorientation, XmVERTICAL);
+        XtSetArg (args[1], XmNprocessingDirection, XmMAX_ON_TOP);
+    }
+    XtSetArg(args[2], XmNminimum, 0);
+    XtSetArg(args[3], XmNmaximum, range);
+    Widget gaugeWidget = XtCreateManagedWidget("gauge", xmGaugeWidgetClass, parentWidget, args, count);
+    m_mainWidget = (WXWidget) gaugeWidget ;
+
+    XtManageChild (gaugeWidget);
+
+    int x = pos.x; int y = pos.y;
+    int width = size.x; int height = size.y;
+    if (width == -1)
+        width = 150;
+    if (height == -1)
+        height = 80;
+
+    SetCanAddEventHandler(TRUE);
+    AttachWidget (parent, m_mainWidget, (WXWidget) NULL, x, y, width, height);
+
+    SetFont(* parent->GetFont());
+    ChangeColour(m_mainWidget);
+
+    return TRUE;
 }
 
 void wxGauge::SetSize(int x, int y, int width, int height, int sizeFlags)
 {
-    // TODO
+    wxControl::SetSize(x, y, width, height, sizeFlags);
 }
 
 void wxGauge::SetShadowWidth(int w)
 {
-    // TODO optional
+    if (w == 0)
+        w = 1;
+    XtVaSetValues((Widget) m_mainWidget, XmNshadowThickness, w, NULL);
 }
 
 void wxGauge::SetBezelFace(int w)
 {
-    // TODO optional
 }
 
 void wxGauge::SetRange(int r)
 {
     m_rangeMax = r;
-    // TODO
+    XtVaSetValues((Widget) m_mainWidget, XmNmaximum, r, NULL);
 }
 
 void wxGauge::SetValue(int pos)
 {
     m_gaugePos = pos;
-    // TODO
+    XtVaSetValues((Widget) m_mainWidget, XmNvalue, pos, NULL);
 }
 
 int wxGauge::GetShadowWidth() const
 {
-    // TODO optional
-    return 0;
+    Dimension w;
+    XtVaGetValues((Widget) m_mainWidget, XmNshadowThickness, &w, NULL);
+    return (int)w;
 }
 
 int wxGauge::GetBezelFace() const
 {
-    // TODO optional
     return 0;
 }
 
 int wxGauge::GetRange() const
 {
-    return m_rangeMax;
+    int r;
+    XtVaGetValues((Widget) m_mainWidget, XmNmaximum, &r, NULL);
+    return (int)r;
+//    return m_rangeMax;
 }
 
 int wxGauge::GetValue() const
 {
-    return m_gaugePos;
+  int pos;
+  XtVaGetValues((Widget) m_mainWidget, XmNvalue, &pos, NULL);
+  return pos;
+//    return m_gaugePos;
 }
 
+//// PRIVATE DECLARATIONS FOR XMGAUGE
+
+#include <Xm/PrimitiveP.h>
+#include <Xm/DrawP.h>
+
+typedef struct {
+    int empty;
+} XmGaugeClassPart;
+
+typedef struct _XmGaugeClassRec {    
+    CoreClassPart	        core_class;
+    XmPrimitiveClassPart	primitive_class;
+    XmGaugeClassPart	        gauge_class;
+} XmGaugeClassRec;
+
+
+typedef struct _XmGaugePart{
+    int value;
+    int minimum;
+    int maximum;
+    unsigned char orientation;
+    unsigned char processingDirection;
+
+    XtCallbackList dragCallback;
+    XtCallbackList valueChangedCallback;
+    
+    /* private fields */
+    Boolean dragging;		/* drag in progress ? */
+    int oldx, oldy;
+    GC gc;
+} XmGaugePart;
+
+
+typedef struct _XmGaugeRec {
+    CorePart		core;
+    XmPrimitivePart	primitive;
+    XmGaugePart	        gauge;
+} XmGaugeRec;
+
+extern XmGaugeClassRec xmGaugeClassRec;
+
+/* Copyright 1994 GROUPE BULL -- See license conditions in file COPYRIGHT */
+
+//// XMGAUGE IMPLEMENTATION
+
+void
+GaugePick(Widget w, XEvent *e, String *args, Cardinal  *num_args);
+void 
+GaugeDrag(Widget w, XEvent *e, String *args, Cardinal  *num_args);
+void 
+GaugeDrop(Widget w, XEvent *e, String *args, Cardinal  *num_args);
+
+
+
+static char translations[] =
+"<Btn1Down>: GaugePick()\n\
+ <Btn1Motion>: GaugeDrag()\n\
+ <Btn1Up>: GaugeDrop()\n\
+";
+
+
+
+static XtActionsRec actions[] = {
+    {"GaugePick", GaugePick},
+    {"GaugeDrag", GaugeDrag},
+    {"GaugeDrop", GaugeDrop},
+};
+
+static void
+DrawSlider(XmGaugeWidget gw, Boolean clear)
+{
+#define THIS gw->gauge
+    int size, sht;
+    float ratio;
+/***chubraev
+    char string[20];
+    int len;
+    unsigned long backgr,foregr;
+    XRectangle rects[1];
+***/
+    
+    sht = gw->primitive.shadow_thickness;
+
+    ratio =  (float)THIS.value/
+             (float)(THIS.maximum - THIS.minimum);
+/***chubraev
+    sprintf(string,"%-d%%",(int)(ratio*100));
+    len=strlen(string);
+    XtVaGetValues(gw,XmNbackground,&backgr,XmNforeground,&foregr,NULL);
+***/
+
+    if(clear) {
+	XClearArea(XtDisplay(gw), XtWindow(gw), sht, sht,
+		   gw->core.width - 2 * sht, gw->core.height - 2 * sht, False);
+    }
+    switch(THIS.orientation) {
+    case XmHORIZONTAL:
+	size = (int) ((gw->core.width - 2 * sht)*ratio);
+	/***chubraev
+	XDrawString(XtDisplay(gw), XtWindow(gw), THIS.gc, sht+gw->core.width/2, 
+gw->core.height - 2 * sht, string, len);
+	***/
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, sht, size, gw->core.height - 2 * sht);
+
+            /***chubraev
+            rects[0].x = sht; rects[0].y = sht;
+            rects[0].width = size; rects[0].height = gw->core.height - 2 * sht;
+	    ***/
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   gw->core.width - size - sht, sht,
+			   size, gw->core.height - 2 * sht);
+            
+            /***chubraev
+            rects[0].x = gw->core.width - size - sht; rects[0].y = sht;
+            rects[0].width = size; rects[0].height = gw->core.height - 2 * sht;
+	    ***/
+	    break;
+	}
+        /***chubraev
+        XSetClipRectangles(XtDisplay(gw), THIS.gc, 0, 0, rects, 1, Unsorted);
+	XSetForeground(XtDisplay(gw), THIS.gc, backgr);
+	XDrawString(XtDisplay(gw), XtWindow(gw), THIS.gc, sht+gw->core.width/2, 
+gw->core.height - 2 * sht, string, len);
+	***/
+
+	break;
+    case XmVERTICAL:
+	size = (int) ((gw->core.height - 2 * sht)*ratio);
+	/***chubraev
+	XDrawString(XtDisplay(gw), XtWindow(gw), THIS.gc, sht, 
+sht+gw->core.height/2, string,len);
+	***/
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, sht, gw->core.width - 2 * sht, size);
+
+            /***chubraev
+            rects[0].x = sht; rects[0].y = sht;
+            rects[0].width = gw->core.width - 2 * sht; rects[0].height = size;
+	    ***/
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, gw->core.height - size - sht,
+			   gw->core.width - 2 * sht, size);
+
+            /***chubraev
+            rects[0].x = sht; rects[0].y = gw->core.height - size - sht;
+            rects[0].width = gw->core.width - 2 * sht; rects[0].height = size;
+	    ***/
+	}
+        /***chubraev
+        XSetClipRectangles(XtDisplay(gw), THIS.gc, 0, 0, rects, 1, Unsorted);
+	XSetForeground(XtDisplay(gw), THIS.gc, backgr);
+	XDrawString(XtDisplay(gw), XtWindow(gw), THIS.gc, sht, 
+sht+gw->core.height/2, string,len);
+	***/
+	break;
+    }
+    /***chubraev
+    XSetClipMask(XtDisplay(gw), THIS.gc, None);
+    XSetForeground(XtDisplay(gw), THIS.gc, foregr);
+    ***/
+#undef THIS	
+}
+
+/* Old code
+ */
+#if 0
+static void
+DrawSlider(XmGaugeWidget gw, Boolean clear)
+{
+#define THIS gw->gauge
+    int size, sht;
+/*    float ratio; */
+
+    sht = gw->primitive.shadow_thickness;
+/* See fix comment below: can cause divide by zero error.
+    ratio = (float)((float)THIS.maximum -
+		    (float)THIS.minimum) / (float)THIS.value;
+*/
+    if(clear) {
+	XClearArea(XtDisplay(gw), XtWindow(gw), sht, sht,
+		   gw->core.width - 2 * sht, gw->core.height - 2 * sht, False);
+    }
+    switch(THIS.orientation) {
+    case XmHORIZONTAL:
+/*	size = (gw->core.width - 2 * sht) / ratio; */
+/* A fix suggested by Dmitri Chubraev */
+        size = (gw->core.width - 2 * sht) /((float)THIS.maximum-(float)THIS.minimum)*(float)THIS.value;
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, sht, size, gw->core.height - 2 * sht);
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   gw->core.width - size - sht, sht,
+			   size, gw->core.height - 2 * sht);
+	    break;
+	}
+	break;
+    case XmVERTICAL:
+        size = (gw->core.height - 2 * sht) /((float)THIS.maximum-(float)THIS.minimum)*(float)THIS.value;
+/*	size = (gw->core.height - 2 * sht)/ ratio; */
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, sht, gw->core.width - 2 * sht, size);
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    XFillRectangle(XtDisplay(gw), XtWindow(gw), THIS.gc,
+			   sht, gw->core.height - size - sht,
+			   gw->core.width - 2 * sht, size);
+	}
+	break;
+    }
+#undef THIS	
+}
+#endif
+
+static void
+Initialize(Widget req, Widget new_w, ArgList args, Cardinal *num_args )
+{
+    XmGaugeWidget gw = (XmGaugeWidget)new_w;
+#define THIS gw->gauge
+    XGCValues values;
+
+    values.foreground = gw->primitive.foreground;
+    THIS.gc = XtGetGC(new_w, GCForeground, &values);
+    
+#undef THIS	
+    
+}
+
+
+
+static void
+Destroy(Widget w)
+{
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+#define THIS gw->gauge
+    XtReleaseGC(w, THIS.gc);
+#undef THIS	
+}
+
+
+
+    
+static Boolean
+SetValues(
+        Widget cw,
+        Widget rw,
+        Widget nw,
+        ArgList args,
+        Cardinal *num_args )
+{
+    XmGaugeWidget cgw = (XmGaugeWidget)cw;
+    XmGaugeWidget ngw = (XmGaugeWidget)nw;
+
+    Boolean redraw = False;
+    if(cgw->primitive.foreground != ngw->primitive.foreground) {
+	XGCValues values;
+
+	redraw = True;
+	XtReleaseGC(nw, ngw->gauge.gc);
+	values.foreground = ngw->primitive.foreground;
+	ngw->gauge.gc = XtGetGC(nw, GCForeground, &values);
+    }
+    if(cgw->gauge.value != ngw->gauge.value) {
+	redraw = True;
+    }
+    return redraw;
+}
+
+
+
+
+static void
+ExposeProc(Widget w, XEvent *event, Region r)
+{
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+#define THIS gw->gauge
+    int sht;
+
+    sht = gw->primitive.shadow_thickness;
+    _XmDrawShadows(XtDisplay(w), XtWindow(w),
+		   gw->primitive.top_shadow_GC,
+		   gw->primitive.bottom_shadow_GC,
+		   0, 0, w->core.width, w->core.height,
+		   sht, XmSHADOW_IN);
+    DrawSlider(gw, False);
+#undef THIS	
+}
+
+
+
+
+
+static XtResource 
+resources[] = {
+#define offset(field) XtOffset(XmGaugeWidget, gauge.field)
+  {XmNvalue, XmCValue, XtRInt, sizeof(int),
+     offset(value), XtRImmediate, (caddr_t)10},
+  
+  {XmNminimum, XmCValue, XtRInt, sizeof(int),
+     offset(minimum), XtRImmediate, (caddr_t)0},
+  
+  {XmNmaximum, XmCValue, XtRInt, sizeof(int),
+     offset(maximum), XtRImmediate, (caddr_t)100},
+  
+  {XmNorientation, XmCOrientation, XmROrientation, sizeof(unsigned char),
+     offset(orientation), XtRImmediate, (caddr_t)XmVERTICAL},
+  
+  {XmNprocessingDirection, XmCProcessingDirection,
+   XmRProcessingDirection, sizeof(unsigned char),
+   offset(processingDirection), XtRImmediate, (caddr_t)XmMAX_ON_RIGHT},
+  
+  {XmNdragCallback, XmCCallback, XmRCallback, sizeof(XtCallbackList),
+     offset(dragCallback), XtRImmediate, (caddr_t)NULL},
+  
+  {XmNvalueChangedCallback, XmCCallback, XmRCallback, sizeof(XtCallbackList),
+     offset(valueChangedCallback), XtRImmediate, (caddr_t)NULL},
+
+  
+#undef offset
+};
+
+
+XmGaugeClassRec xmGaugeClassRec = {
+    {				/* core fields */
+	(WidgetClass) &xmPrimitiveClassRec, /* superclass		*/
+	"XmGauge",		/* class_name		*/
+	sizeof(XmGaugeRec),	/* widget_size		*/
+	NULL,			/* class_initialize		*/
+	NULL,			/* class_part_initialize	*/
+	FALSE,			/* class_inited		*/
+	Initialize,		/* initialize		*/
+	NULL,			/* initialize_hook		*/
+	XtInheritRealize,	/* realize			*/
+	actions,		/* actions			*/
+	XtNumber(actions),	/* num_actions		*/
+	resources,		/* resources		*/
+	XtNumber(resources),	/* num_resources		*/
+	NULLQUARK,		/* xrm_class		*/
+	TRUE,			/* compress_motion		*/
+	TRUE,			/* compress_exposure	*/
+	TRUE,			/* compress_enterleave	*/
+	FALSE,			/* visible_interest		*/
+	Destroy,		/* destroy			*/
+	NULL,			/* resize			*/
+	ExposeProc,		/* expose			*/
+	SetValues,		/* set_values		*/
+	NULL,			/* set_values_hook		*/
+	XtInheritSetValuesAlmost, /* set_values_almost	*/
+	NULL,			/* get_values_hook		*/
+	NULL,			/* accept_focus		*/
+	XtVersion,		/* version			*/
+	NULL,			/* callback_private		*/
+	translations,		/* tm_table			*/
+	NULL,			/* query_geometry		*/
+	NULL,			/* display_accelerator	*/
+	NULL			/* extension		*/
+    },
+				/* primitive_class fields */
+    {
+	NULL,			/* border_highlight	*/
+	NULL,			/* border_unhighlight	*/
+	NULL,			/* translations		*/
+	NULL,			/* arm_and_activate	*/
+	NULL,			/* syn_resources	*/
+	0,			/* num_syn_resources	*/
+	NULL			/* extension		*/
+    },
+    { /* gauge fields */
+	0			/* empty		*/
+    }
+};
+
+WidgetClass xmGaugeWidgetClass = (WidgetClass)&xmGaugeClassRec;
+
+
+
+
+void 
+GaugePick(Widget w, XEvent *e, String *args, Cardinal  *num_args)
+{
+/* Commented out for a read-only gauge in wxWindows */
+#if 0
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+#define THIS gw->gauge
+    int size, sht;
+    float ratio;
+    Boolean dragging = False;
+    XButtonEvent *event = (XButtonEvent *)e;
+    int x, y;
+
+    x = event->x;
+    y = event->y;
+    sht = gw->primitive.shadow_thickness;
+    _XmDrawShadows(XtDisplay(w), XtWindow(w),
+		   gw->primitive.top_shadow_GC,
+		   gw->primitive.bottom_shadow_GC,
+		   0, 0, w->core.width, w->core.height,
+		   sht, XmSHADOW_IN);
+
+
+    ratio = (float)((float)THIS.maximum -
+		    (float)THIS.minimum) / (float)THIS.value;		   
+    switch(THIS.orientation) {
+    case XmHORIZONTAL:
+	size = (w->core.width - 2 * sht) / ratio;
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    dragging = (x > sht) && (y > sht) &&
+		(x < sht + size) && (y < w->core.height - sht);
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    dragging = (x > w->core.width - size - sht) && (y > sht) &&
+		(x < w->core.width - sht) && (y < w->core.height + sht);
+	    break;
+	}
+	break;
+    case XmVERTICAL:
+	size = (w->core.height - 2 * sht) / ratio;
+	switch(THIS.processingDirection) {
+	case XmMAX_ON_RIGHT:
+	case XmMAX_ON_BOTTOM:
+	    dragging = (x > sht) && (y > sht) &&
+		(x < w->core.width - sht) &&
+		(y < w->core.width - 2 * sht + size);
+	    break;
+	case XmMAX_ON_LEFT:
+	case XmMAX_ON_TOP:
+	    dragging = (x > sht) && (y > w->core.height - size - sht) &&
+		(x < w->core.width - sht) && (y < w->core.height - sht);
+	}
+	break;
+    }
+    THIS.dragging = dragging;
+    THIS.oldx = x;
+    THIS.oldy = y;
+#undef THIS    
+#endif
+}
+
+#define round(x) ( (x) > 0 ? ((x) + 0.5) : -(-(x) + 0.5) )
+
+void 
+GaugeDrag(Widget w, XEvent *e, String *args, Cardinal  *num_args)
+{
+/* Commented out for a read-only gauge in wxWindows */
+#if 0
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+#define THIS gw->gauge
+    int sht, x, y, max, value;
+    float ratio, nratio, size, nsize, fvalue, delta;
+    XMotionEvent *event = (XMotionEvent *)e;
+    
+    if( ! THIS.dragging) return;
+
+    x = event->x;
+    y = event->y;
+    sht = gw->primitive.shadow_thickness;
+
+    ratio = (float)THIS.value / (float)((float)THIS.maximum -
+					(float)THIS.minimum);
+    switch(THIS.orientation) {
+    case XmHORIZONTAL:
+	max = (w->core.width - 2 * sht);
+	size = (float)max * ratio;
+	delta =  (float)x - (float)THIS.oldx;
+	break;
+    case XmVERTICAL:
+	max = (w->core.height - 2 * sht);
+	size = (float) max * ratio;
+	delta =  (float)y - (float)THIS.oldy;
+	break;
+    }
+    switch(THIS.processingDirection) {
+    case XmMAX_ON_RIGHT:
+    case XmMAX_ON_BOTTOM:
+	nsize = size + delta;
+	break;
+    default:
+	nsize = size - delta;
+    }
+    if(nsize > (float)max) nsize = (float)max;
+    if(nsize < (float)0 ) nsize = (float)0;
+    nratio =  nsize / (float)max;
+    
+    fvalue = (int)((float)THIS.maximum -
+			 (float)THIS.minimum) * (float)nsize / (float)max;
+    value = round(fvalue);
+
+    THIS.value = value;
+    THIS.oldx = x;
+    THIS.oldy = y;
+
+    /* clear old slider only if it was larger */
+    DrawSlider(gw, (nsize < size));
+    
+    {
+	XmGaugeCallbackStruct call;
+
+	if(NULL  != THIS.dragCallback) {
+	    call.reason = XmCR_DRAG;
+	    call.event = e;
+	    call.value = THIS.value;
+	    XtCallCallbacks(w, XmNdragCallback, &call);
+	}
+    }
+#undef THIS    
+#endif
+}
+
+
+void 
+GaugeDrop(Widget w, XEvent *e, String *args, Cardinal  *num_args)
+{
+/* Commented out for a read-only gauge in wxWindows */
+#if 0
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+#define THIS gw->gauge
+    if( ! THIS.dragging) return;
+
+    if(NULL  != THIS.valueChangedCallback) {
+	XmGaugeCallbackStruct call;
+	call.reason = XmCR_VALUE_CHANGED;
+	call.event = e;
+	call.value = THIS.value;
+	XtCallCallbacks(w, XmNvalueChangedCallback, &call);
+    }
+    THIS.dragging = False;
+#undef THIS    
+#endif
+}
+
+void
+XmGaugeSetValue(Widget w, int value)
+{
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+
+    gw->gauge.value = value;
+    DrawSlider(gw, True);
+    XFlush(XtDisplay(w));
+}
+
+int
+XmGaugeGetValue(Widget w)
+{    
+    XmGaugeWidget gw = (XmGaugeWidget)w;
+
+    return gw->gauge.value;
+}