diff --git a/dvx/Makefile b/dvx/Makefile
index df6cfa0..be167e9 100644
--- a/dvx/Makefile
+++ b/dvx/Makefile
@@ -35,6 +35,7 @@ WSRCS  = widgets/widgetAnsiTerm.c \
          widgets/widgetSeparator.c \
          widgets/widgetSlider.c \
          widgets/widgetSpacer.c \
+         widgets/widgetSpinner.c \
          widgets/widgetStatusBar.c \
          widgets/widgetTabControl.c \
          widgets/widgetTextInput.c \
@@ -102,6 +103,7 @@ $(WOBJDIR)/widgetRadio.o:       widgets/widgetRadio.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetSeparator.o:   widgets/widgetSeparator.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetSlider.o:      widgets/widgetSlider.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetSpacer.o:      widgets/widgetSpacer.c $(WIDGET_DEPS)
+$(WOBJDIR)/widgetSpinner.o:     widgets/widgetSpinner.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetStatusBar.o:   widgets/widgetStatusBar.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetTabControl.o:  widgets/widgetTabControl.c $(WIDGET_DEPS)
 $(WOBJDIR)/widgetTextInput.o:   widgets/widgetTextInput.c $(WIDGET_DEPS)
diff --git a/dvx/dvxWidget.h b/dvx/dvxWidget.h
index b239df8..8c34d9f 100644
--- a/dvx/dvxWidget.h
+++ b/dvx/dvxWidget.h
@@ -68,7 +68,8 @@ typedef enum {
     WidgetImageButtonE,
     WidgetCanvasE,
     WidgetAnsiTermE,
-    WidgetListViewE
+    WidgetListViewE,
+    WidgetSpinnerE
 } WidgetTypeE;
 
 // ============================================================
@@ -423,6 +424,23 @@ typedef struct WidgetT {
             uint8_t            *selBits;
             void              (*onHeaderClick)(struct WidgetT *w, int32_t col, ListViewSortE dir);
         } listView;
+
+        struct {
+            int32_t value;
+            int32_t minValue;
+            int32_t maxValue;
+            int32_t step;
+            char    buf[16];      // formatted value text
+            int32_t len;
+            int32_t cursorPos;
+            int32_t scrollOff;
+            int32_t selStart;     // selection anchor (-1 = none)
+            int32_t selEnd;       // selection end (-1 = none)
+            char    undoBuf[16];  // undo snapshot
+            int32_t undoLen;
+            int32_t undoCursor;
+            bool    editing;      // true when user is typing
+        } spinner;
     } as;
 } WidgetT;
 
@@ -505,6 +523,16 @@ WidgetT *wgtSlider(WidgetT *parent, int32_t minVal, int32_t maxVal);
 void wgtSliderSetValue(WidgetT *w, int32_t value);
 int32_t wgtSliderGetValue(const WidgetT *w);
 
+// ============================================================
+// Spinner (numeric input)
+// ============================================================
+
+WidgetT *wgtSpinner(WidgetT *parent, int32_t minVal, int32_t maxVal, int32_t step);
+void wgtSpinnerSetValue(WidgetT *w, int32_t value);
+int32_t wgtSpinnerGetValue(const WidgetT *w);
+void wgtSpinnerSetRange(WidgetT *w, int32_t minVal, int32_t maxVal);
+void wgtSpinnerSetStep(WidgetT *w, int32_t step);
+
 // ============================================================
 // TabControl
 // ============================================================
diff --git a/dvx/widgets/widgetClass.c b/dvx/widgets/widgetClass.c
index f3315e0..d6ed76d 100644
--- a/dvx/widgets/widgetClass.c
+++ b/dvx/widgets/widgetClass.c
@@ -370,6 +370,19 @@ static const WidgetClassT sClassAnsiTerm = {
     .setText     = NULL
 };
 
+static const WidgetClassT sClassSpinner = {
+    .flags       = WCLASS_FOCUSABLE,
+    .paint       = widgetSpinnerPaint,
+    .paintOverlay = NULL,
+    .calcMinSize = widgetSpinnerCalcMinSize,
+    .layout      = NULL,
+    .onMouse     = widgetSpinnerOnMouse,
+    .onKey       = widgetSpinnerOnKey,
+    .destroy     = NULL,
+    .getText     = widgetSpinnerGetText,
+    .setText     = widgetSpinnerSetText
+};
+
 // ============================================================
 // Class table — indexed by WidgetTypeE
 // ============================================================
@@ -402,5 +415,6 @@ const WidgetClassT *widgetClassTable[] = {
     [WidgetImageButtonE] = &sClassImageButton,
     [WidgetCanvasE]      = &sClassCanvas,
     [WidgetAnsiTermE]    = &sClassAnsiTerm,
-    [WidgetListViewE]    = &sClassListView
+    [WidgetListViewE]    = &sClassListView,
+    [WidgetSpinnerE]     = &sClassSpinner
 };
diff --git a/dvx/widgets/widgetInternal.h b/dvx/widgets/widgetInternal.h
index 89ddbbc..7cb52a5 100644
--- a/dvx/widgets/widgetInternal.h
+++ b/dvx/widgets/widgetInternal.h
@@ -171,6 +171,7 @@ void widgetProgressBarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const
 void widgetRadioPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
 void widgetSeparatorPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
 void widgetSliderPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
+void widgetSpinnerPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
 void widgetStatusBarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
 void widgetTabControlPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
 void widgetTextAreaPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
@@ -197,6 +198,7 @@ void widgetProgressBarCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetRadioCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetSeparatorCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetSliderCalcMinSize(WidgetT *w, const BitmapFontT *font);
+void widgetSpinnerCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetSpacerCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetTabControlCalcMinSize(WidgetT *w, const BitmapFontT *font);
 void widgetTextAreaCalcMinSize(WidgetT *w, const BitmapFontT *font);
@@ -277,6 +279,10 @@ void widgetRadioOnKey(WidgetT *w, int32_t key, int32_t mod);
 void widgetRadioOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
 void widgetSliderOnKey(WidgetT *w, int32_t key, int32_t mod);
 void widgetSliderOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
+void widgetSpinnerOnKey(WidgetT *w, int32_t key, int32_t mod);
+void widgetSpinnerOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
+const char *widgetSpinnerGetText(const WidgetT *w);
+void widgetSpinnerSetText(WidgetT *w, const char *text);
 void widgetTabControlOnKey(WidgetT *w, int32_t key, int32_t mod);
 void widgetTabControlOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
 void widgetTextAreaOnKey(WidgetT *w, int32_t key, int32_t mod);
diff --git a/dvx/widgets/widgetSpinner.c b/dvx/widgets/widgetSpinner.c
new file mode 100644
index 0000000..80dccb1
--- /dev/null
+++ b/dvx/widgets/widgetSpinner.c
@@ -0,0 +1,508 @@
+// widgetSpinner.c — Spinner (numeric up/down) widget
+
+#include "widgetInternal.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define SPINNER_BTN_W   14
+#define SPINNER_BORDER  2
+#define SPINNER_PAD     3
+
+
+// ============================================================
+// Prototypes
+// ============================================================
+
+static void spinnerClampAndFormat(WidgetT *w);
+static void spinnerCommitEdit(WidgetT *w);
+static void spinnerFormat(WidgetT *w);
+static void spinnerStartEdit(WidgetT *w);
+
+
+// ============================================================
+// spinnerClampAndFormat
+// ============================================================
+
+static void spinnerClampAndFormat(WidgetT *w) {
+    if (w->as.spinner.value < w->as.spinner.minValue) {
+        w->as.spinner.value = w->as.spinner.minValue;
+    }
+
+    if (w->as.spinner.value > w->as.spinner.maxValue) {
+        w->as.spinner.value = w->as.spinner.maxValue;
+    }
+
+    spinnerFormat(w);
+}
+
+
+// ============================================================
+// spinnerCommitEdit
+// ============================================================
+
+static void spinnerCommitEdit(WidgetT *w) {
+    if (!w->as.spinner.editing) {
+        return;
+    }
+
+    w->as.spinner.editing = false;
+    w->as.spinner.buf[w->as.spinner.len] = '\0';
+
+    int32_t val = (int32_t)strtol(w->as.spinner.buf, NULL, 10);
+    w->as.spinner.value = val;
+    spinnerClampAndFormat(w);
+}
+
+
+// ============================================================
+// spinnerFormat
+// ============================================================
+
+static void spinnerFormat(WidgetT *w) {
+    w->as.spinner.len = snprintf(w->as.spinner.buf, sizeof(w->as.spinner.buf), "%d", (int)w->as.spinner.value);
+    w->as.spinner.cursorPos = w->as.spinner.len;
+    w->as.spinner.scrollOff = 0;
+    w->as.spinner.selStart  = -1;
+    w->as.spinner.selEnd    = -1;
+}
+
+
+// ============================================================
+// spinnerStartEdit
+// ============================================================
+
+static void spinnerStartEdit(WidgetT *w) {
+    if (!w->as.spinner.editing) {
+        w->as.spinner.editing = true;
+
+        // Snapshot for undo
+        memcpy(w->as.spinner.undoBuf, w->as.spinner.buf, sizeof(w->as.spinner.buf));
+        w->as.spinner.undoLen    = w->as.spinner.len;
+        w->as.spinner.undoCursor = w->as.spinner.cursorPos;
+    }
+}
+
+
+// ============================================================
+// widgetSpinnerCalcMinSize
+// ============================================================
+
+void widgetSpinnerCalcMinSize(WidgetT *w, const BitmapFontT *font) {
+    w->calcMinW = font->charWidth * 6 + SPINNER_PAD * 2 + SPINNER_BORDER * 2 + SPINNER_BTN_W;
+    w->calcMinH = font->charHeight + SPINNER_PAD * 2 + SPINNER_BORDER * 2;
+}
+
+
+// ============================================================
+// widgetSpinnerGetText
+// ============================================================
+
+const char *widgetSpinnerGetText(const WidgetT *w) {
+    return w->as.spinner.buf;
+}
+
+
+// ============================================================
+// widgetSpinnerOnKey
+// ============================================================
+
+void widgetSpinnerOnKey(WidgetT *w, int32_t key, int32_t mod) {
+    int32_t step = w->as.spinner.step;
+
+    // Up arrow — increment
+    if (key == (0x48 | 0x100)) {
+        spinnerCommitEdit(w);
+        w->as.spinner.value += step;
+        spinnerClampAndFormat(w);
+
+        if (w->onChange) {
+            w->onChange(w);
+        }
+
+        wgtInvalidatePaint(w);
+        return;
+    }
+
+    // Down arrow — decrement
+    if (key == (0x50 | 0x100)) {
+        spinnerCommitEdit(w);
+        w->as.spinner.value -= step;
+        spinnerClampAndFormat(w);
+
+        if (w->onChange) {
+            w->onChange(w);
+        }
+
+        wgtInvalidatePaint(w);
+        return;
+    }
+
+    // Page Up — increment by step * 10
+    if (key == (0x49 | 0x100)) {
+        spinnerCommitEdit(w);
+        w->as.spinner.value += step * 10;
+        spinnerClampAndFormat(w);
+
+        if (w->onChange) {
+            w->onChange(w);
+        }
+
+        wgtInvalidatePaint(w);
+        return;
+    }
+
+    // Page Down — decrement by step * 10
+    if (key == (0x51 | 0x100)) {
+        spinnerCommitEdit(w);
+        w->as.spinner.value -= step * 10;
+        spinnerClampAndFormat(w);
+
+        if (w->onChange) {
+            w->onChange(w);
+        }
+
+        wgtInvalidatePaint(w);
+        return;
+    }
+
+    // Enter — commit edit
+    if (key == '\r' || key == '\n') {
+        if (w->as.spinner.editing) {
+            spinnerCommitEdit(w);
+
+            if (w->onChange) {
+                w->onChange(w);
+            }
+
+            wgtInvalidatePaint(w);
+        }
+
+        return;
+    }
+
+    // Escape — cancel edit, revert to current value
+    if (key == 27) {
+        if (w->as.spinner.editing) {
+            w->as.spinner.editing = false;
+            spinnerFormat(w);
+            wgtInvalidatePaint(w);
+        }
+
+        return;
+    }
+
+    // Filter: only allow digits, minus, and control keys through to text editor
+    bool isDigit   = (key >= '0' && key <= '9');
+    bool isMinus   = (key == '-');
+    bool isControl = (key < 0x20) || (key & 0x100);
+
+    if (!isDigit && !isMinus && !isControl) {
+        return;
+    }
+
+    // Minus only at position 0 (and only if min is negative)
+    if (isMinus && (w->as.spinner.cursorPos != 0 || w->as.spinner.minValue >= 0)) {
+        return;
+    }
+
+    // Enter edit mode on first text-modifying key
+    if (isDigit || isMinus || key == 8 || key == 127 || key == (0x53 | 0x100)) {
+        spinnerStartEdit(w);
+    }
+
+    // Delegate to shared text editing logic (handles cursor movement,
+    // selection, cut/copy/paste, undo/redo, backspace, delete, etc.)
+    widgetTextEditOnKey(w, key, mod,
+                        w->as.spinner.buf, (int32_t)sizeof(w->as.spinner.buf),
+                        &w->as.spinner.len, &w->as.spinner.cursorPos,
+                        &w->as.spinner.scrollOff,
+                        &w->as.spinner.selStart, &w->as.spinner.selEnd,
+                        w->as.spinner.undoBuf, &w->as.spinner.undoLen,
+                        &w->as.spinner.undoCursor);
+
+    wgtInvalidatePaint(w);
+}
+
+
+// ============================================================
+// widgetSpinnerOnMouse
+// ============================================================
+
+void widgetSpinnerOnMouse(WidgetT *hit, WidgetT *root, int32_t vx, int32_t vy) {
+    hit->focused = true;
+
+    int32_t btnX = hit->x + hit->w - SPINNER_BORDER - SPINNER_BTN_W;
+    int32_t midY = hit->y + hit->h / 2;
+
+    if (vx >= btnX) {
+        // Click on button area
+        spinnerCommitEdit(hit);
+
+        if (vy < midY) {
+            hit->as.spinner.value += hit->as.spinner.step;
+        } else {
+            hit->as.spinner.value -= hit->as.spinner.step;
+        }
+
+        spinnerClampAndFormat(hit);
+
+        if (hit->onChange) {
+            hit->onChange(hit);
+        }
+    } else {
+        // Click on text area
+        AppContextT       *ctx  = (AppContextT *)root->userData;
+        const BitmapFontT *font = &ctx->font;
+        int32_t textX = hit->x + SPINNER_BORDER + SPINNER_PAD;
+        int32_t relX  = vx - textX + hit->as.spinner.scrollOff * font->charWidth;
+        int32_t pos   = relX / font->charWidth;
+
+        if (pos < 0) {
+            pos = 0;
+        }
+
+        if (pos > hit->as.spinner.len) {
+            pos = hit->as.spinner.len;
+        }
+
+        int32_t clicks = multiClickDetect(vx, vy);
+
+        if (clicks >= 2) {
+            // Double/triple-click: select all text
+            hit->as.spinner.selStart  = 0;
+            hit->as.spinner.selEnd    = hit->as.spinner.len;
+            hit->as.spinner.cursorPos = hit->as.spinner.len;
+        } else {
+            // Single click: place cursor
+            hit->as.spinner.cursorPos = pos;
+            hit->as.spinner.selStart  = -1;
+            hit->as.spinner.selEnd    = -1;
+        }
+
+        spinnerStartEdit(hit);
+    }
+
+    wgtInvalidatePaint(hit);
+}
+
+
+// ============================================================
+// widgetSpinnerPaint
+// ============================================================
+
+void widgetSpinnerPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors) {
+    uint32_t fg = w->fgColor ? w->fgColor : colors->contentFg;
+    uint32_t bg = w->bgColor ? w->bgColor : colors->contentBg;
+
+    int32_t btnW = SPINNER_BTN_W;
+    int32_t btnX = w->x + w->w - SPINNER_BORDER - btnW;
+
+    // Sunken border around entire widget
+    BevelStyleT bevel;
+    bevel.highlight = colors->windowShadow;
+    bevel.shadow    = colors->windowHighlight;
+    bevel.face      = bg;
+    bevel.width     = SPINNER_BORDER;
+    drawBevel(d, ops, w->x, w->y, w->w, w->h, &bevel);
+
+    // Text area
+    int32_t textX    = w->x + SPINNER_BORDER + SPINNER_PAD;
+    int32_t textY    = w->y + (w->h - font->charHeight) / 2;
+    int32_t textW    = btnX - (w->x + SPINNER_BORDER) - SPINNER_PAD * 2;
+    int32_t maxChars = textW / font->charWidth;
+
+    if (maxChars < 0) {
+        maxChars = 0;
+    }
+
+    // Scroll to keep cursor visible
+    if (w->as.spinner.cursorPos < w->as.spinner.scrollOff) {
+        w->as.spinner.scrollOff = w->as.spinner.cursorPos;
+    } else if (w->as.spinner.cursorPos > w->as.spinner.scrollOff + maxChars) {
+        w->as.spinner.scrollOff = w->as.spinner.cursorPos - maxChars;
+    }
+
+    int32_t off = w->as.spinner.scrollOff;
+    int32_t len = w->as.spinner.len - off;
+
+    if (len > maxChars) {
+        len = maxChars;
+    }
+
+    if (len < 0) {
+        len = 0;
+    }
+
+    // Selection range
+    int32_t selLo = -1;
+    int32_t selHi = -1;
+
+    if (w->as.spinner.selStart >= 0 && w->as.spinner.selEnd >= 0 && w->as.spinner.selStart != w->as.spinner.selEnd) {
+        selLo = w->as.spinner.selStart < w->as.spinner.selEnd ? w->as.spinner.selStart : w->as.spinner.selEnd;
+        selHi = w->as.spinner.selStart > w->as.spinner.selEnd ? w->as.spinner.selStart : w->as.spinner.selEnd;
+    }
+
+    // Draw text with selection highlighting (3-run approach like textInput)
+    int32_t visSelLo = selLo - off;
+    int32_t visSelHi = selHi - off;
+
+    if (visSelLo < 0) {
+        visSelLo = 0;
+    }
+
+    if (visSelHi > len) {
+        visSelHi = len;
+    }
+
+    if (selLo >= 0 && visSelLo < visSelHi) {
+        // Before selection
+        if (visSelLo > 0) {
+            drawTextN(d, ops, font, textX, textY, &w->as.spinner.buf[off], visSelLo, fg, bg, true);
+        }
+
+        // Selection
+        drawTextN(d, ops, font, textX + visSelLo * font->charWidth, textY, &w->as.spinner.buf[off + visSelLo], visSelHi - visSelLo, colors->menuHighlightFg, colors->menuHighlightBg, true);
+
+        // After selection
+        if (visSelHi < len) {
+            drawTextN(d, ops, font, textX + visSelHi * font->charWidth, textY, &w->as.spinner.buf[off + visSelHi], len - visSelHi, fg, bg, true);
+        }
+    } else if (len > 0) {
+        drawTextN(d, ops, font, textX, textY, &w->as.spinner.buf[off], len, fg, bg, true);
+    }
+
+    // Cursor
+    if (w->focused) {
+        int32_t curX = textX + (w->as.spinner.cursorPos - off) * font->charWidth;
+
+        if (curX >= w->x + SPINNER_BORDER && curX < btnX - SPINNER_PAD) {
+            drawVLine(d, ops, curX, textY, font->charHeight, fg);
+        }
+    }
+
+    // Up button (top half)
+    int32_t btnTopH = w->h / 2;
+    int32_t btnBotH = w->h - btnTopH;
+
+    BevelStyleT btnBevel = BEVEL_RAISED(colors, 1);
+    drawBevel(d, ops, btnX, w->y, btnW + SPINNER_BORDER, btnTopH, &btnBevel);
+
+    // Up arrow triangle
+    {
+        int32_t cx = btnX + btnW / 2;
+        int32_t cy = w->y + btnTopH / 2;
+
+        for (int32_t i = 0; i < 3; i++) {
+            drawHLine(d, ops, cx - i, cy - 1 + i, 1 + i * 2, fg);
+        }
+    }
+
+    // Down button (bottom half)
+    drawBevel(d, ops, btnX, w->y + btnTopH, btnW + SPINNER_BORDER, btnBotH, &btnBevel);
+
+    // Down arrow triangle
+    {
+        int32_t cx = btnX + btnW / 2;
+        int32_t cy = w->y + btnTopH + btnBotH / 2;
+
+        for (int32_t i = 0; i < 3; i++) {
+            drawHLine(d, ops, cx - i, cy + 1 - i, 1 + i * 2, fg);
+        }
+    }
+
+    // Focus rect around entire widget
+    if (w->focused) {
+        drawFocusRect(d, ops, w->x + 1, w->y + 1, w->w - 2, w->h - 2, fg);
+    }
+}
+
+
+// ============================================================
+// widgetSpinnerSetText
+// ============================================================
+
+void widgetSpinnerSetText(WidgetT *w, const char *text) {
+    int32_t val = (int32_t)strtol(text, NULL, 10);
+    w->as.spinner.value = val;
+    spinnerClampAndFormat(w);
+}
+
+
+// ============================================================
+// wgtSpinner
+// ============================================================
+
+WidgetT *wgtSpinner(WidgetT *parent, int32_t minVal, int32_t maxVal, int32_t step) {
+    WidgetT *w = widgetAlloc(parent, WidgetSpinnerE);
+
+    if (w) {
+        w->as.spinner.minValue   = minVal;
+        w->as.spinner.maxValue   = maxVal;
+        w->as.spinner.step       = step > 0 ? step : 1;
+        w->as.spinner.value      = minVal;
+        w->as.spinner.editing    = false;
+        w->as.spinner.selStart   = -1;
+        w->as.spinner.selEnd     = -1;
+        w->as.spinner.undoLen    = 0;
+        w->as.spinner.undoCursor = 0;
+        spinnerFormat(w);
+    }
+
+    return w;
+}
+
+
+// ============================================================
+// wgtSpinnerGetValue
+// ============================================================
+
+int32_t wgtSpinnerGetValue(const WidgetT *w) {
+    if (!w || w->type != WidgetSpinnerE) {
+        return 0;
+    }
+
+    return w->as.spinner.value;
+}
+
+
+// ============================================================
+// wgtSpinnerSetRange
+// ============================================================
+
+void wgtSpinnerSetRange(WidgetT *w, int32_t minVal, int32_t maxVal) {
+    if (!w || w->type != WidgetSpinnerE) {
+        return;
+    }
+
+    w->as.spinner.minValue = minVal;
+    w->as.spinner.maxValue = maxVal;
+    spinnerClampAndFormat(w);
+}
+
+
+// ============================================================
+// wgtSpinnerSetStep
+// ============================================================
+
+void wgtSpinnerSetStep(WidgetT *w, int32_t step) {
+    if (!w || w->type != WidgetSpinnerE) {
+        return;
+    }
+
+    w->as.spinner.step = step > 0 ? step : 1;
+}
+
+
+// ============================================================
+// wgtSpinnerSetValue
+// ============================================================
+
+void wgtSpinnerSetValue(WidgetT *w, int32_t value) {
+    if (!w || w->type != WidgetSpinnerE) {
+        return;
+    }
+
+    w->as.spinner.value = value;
+    spinnerClampAndFormat(w);
+}
diff --git a/dvxdemo/demo.c b/dvxdemo/demo.c
index 2780d93..be522bf 100644
--- a/dvxdemo/demo.c
+++ b/dvxdemo/demo.c
@@ -424,6 +424,13 @@ static void setupControlsWindow(AppContextT *ctx) {
     wgtLabel(page1, "&Volume:");
     wgtSlider(page1, 0, 100);
 
+    WidgetT *spinRow = wgtHBox(page1);
+    spinRow->maxH = wgtPixels(30);
+    wgtLabel(spinRow, "&Quantity:");
+    WidgetT *spin = wgtSpinner(spinRow, 0, 999, 1);
+    wgtSpinnerSetValue(spin, 42);
+    spin->weight = 50;
+
     // --- Tab 2: Tree ---
     WidgetT *page2 = wgtTabPage(tabs, "&Tree");