diff --git a/roo-e/src/gui/widgets/button.c b/roo-e/src/gui/widgets/button.c
new file mode 100644
index 0000000..f376866
--- /dev/null
+++ b/roo-e/src/gui/widgets/button.c
@@ -0,0 +1,134 @@
+/*
+ *  Roo/E, the Kangaroo Punch Portable GUI Toolkit
+ *  Copyright (C) 2022 Scott Duensing
+ *
+ *  http://kangaroopunch.com
+ *
+ *
+ *  This file is part of Roo/E.
+ *
+ *  Roo/E is free software: you can redistribute it and/or modify it under the
+ *  terms of the GNU Affero General Public License as published by the Free
+ *  Software Foundation, either version 3 of the License, or (at your option)
+ *  any later version.
+ *
+ *  Roo/E is distributed in the hope that it will be useful, but WITHOUT ANY
+ *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ *  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ *  details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with Roo/E. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include "../wmwindow.h"
+
+#include "button.h"
+
+
+uint8_t  __MAGIC_BUTTON = 0;
+
+
+static void buttonClick(WidgetT *widget, uint16_t x, uint16_t y, uint8_t event, void *data);
+static void buttonDestroy(struct WidgetS *widget, ...);
+static void buttonPaint(struct WidgetS *widget, ...);
+
+
+static void buttonClick(WidgetT *widget, uint16_t x, uint16_t y, uint8_t event, void *data) {
+	ButtonT *b = (ButtonT *)widget;
+
+	switch (event) {
+		case CLICK_LEFT_DOWN:
+			b->isPressed = 1;
+			break;
+
+		case CLICK_LEFT_UP:
+			b->isPressed = 0;
+			// Call the actual click event.
+			b->handler(widget, x, y, event, data);
+			break;
+
+		case CLICK_LEFT_CANCEL:
+			b->isPressed = 0;
+			break;
+	}
+
+	guiWidgetDirtySet(widget, 1);
+}
+
+
+void buttonClickSet(ButtonT *button, ClickHandlerT handler, void *data) {
+	button->handler   = handler;
+	button->base.data = data;
+}
+
+
+ButtonT *buttonCreate(char *label, ClickHandlerT handler, void *data, ...) {
+	ButtonT  *b = NULL;
+	uint16_t  width;
+	uint16_t  height;
+	FontT    *f = __guiFontVGA8x16;
+
+	NEW(ButtonT, b);
+	memset(b, 0, sizeof(ButtonT));
+
+	b->offset.x = 8;  // 8 = two border, 6 padding.
+	b->offset.y = 4;  // 4 = two border, two padding.
+	b->label    = labelCreate(LABEL_ALIGN_LEFT, f, label);
+	if (!b->label) {
+		DEL(b);
+		return NULL;
+	}
+
+	width    = fontWidthCharactersGet(label) * fontWidthGet(f) + (b->offset.x * 2);
+	height   = fontHeightGet(f) + (b->offset.y * 2);
+
+	guiWidgetBaseSet(W(b), __MAGIC_BUTTON, width, height);
+
+	buttonClickSet(b, handler, data);
+
+	return b;
+}
+
+
+static void buttonDestroy(struct WidgetS *widget, ...) {
+	ButtonT *b = (ButtonT *)widget;
+
+	guiWidgetDestroy(W(b->label));
+	DEL(b);
+}
+
+
+static void buttonPaint(struct WidgetS *widget, ...) {
+	ButtonT *b = (ButtonT *)widget;
+	ColorT   h = b->isPressed ? GUI_BLACK : GUI_WHITE;
+	ColorT   s = b->isPressed ? GUI_WHITE : GUI_BLACK;
+
+	if (guiWidgetDirtyGet(widget)) {
+		guiWidgetDirtySet(widget, 0);
+		// Paint button.
+		surfaceBoxHighlight(b->base.r.x,     b->base.r.y,     b->base.r.x + b->base.r.x2 - 1, b->base.r.y + b->base.r.y2 - 1, h, s);
+		surfaceBoxHighlight(b->base.r.x + 1, b->base.r.y + 1, b->base.r.x + b->base.r.x2 - 2, b->base.r.y + b->base.r.y2 - 2, h, s);
+		surfaceBoxFilled(b->base.r.x + 2,    b->base.r.y + 2, b->base.r.x + b->base.r.x2 - 3, b->base.r.y + b->base.r.y2 - 3, GUI_LIGHTGRAY);
+		// Paint label.
+		guiWidgetPaintManually(W(b->label), b->base.r.x + b->offset.x + b->isPressed, b->base.r.y + b->offset.y + b->isPressed);
+	}
+}
+
+
+RegisterT *buttonRegister(uint8_t magic) {
+	static RegisterT reg = {
+		"Button",
+		buttonClick,
+		buttonDestroy,
+		buttonPaint,
+		NULL           // No unregister handler.
+	};
+
+	// One-time widget startup code.
+	__MAGIC_BUTTON = magic;
+
+	return &reg;
+}
diff --git a/roo-e/src/gui/widgets/button.h b/roo-e/src/gui/widgets/button.h
new file mode 100644
index 0000000..de52041
--- /dev/null
+++ b/roo-e/src/gui/widgets/button.h
@@ -0,0 +1,51 @@
+/*
+ *  Roo/E, the Kangaroo Punch Portable GUI Toolkit
+ *  Copyright (C) 2022 Scott Duensing
+ *
+ *  http://kangaroopunch.com
+ *
+ *
+ *  This file is part of Roo/E.
+ *
+ *  Roo/E is free software: you can redistribute it and/or modify it under the
+ *  terms of the GNU Affero General Public License as published by the Free
+ *  Software Foundation, either version 3 of the License, or (at your option)
+ *  any later version.
+ *
+ *  Roo/E is distributed in the hope that it will be useful, but WITHOUT ANY
+ *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ *  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ *  details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with Roo/E. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#ifndef BUTTON_H
+#define BUTTON_H
+
+
+#include "../gui.h"
+#include "label.h"
+
+
+typedef struct ButtonS {
+	WidgetT        base;         // Required by all widgets.
+	LabelT        *label;        // Label to display text.
+	PointT         offset;       // Offset of label in button.
+	ClickHandlerT  handler;      // Actual event handler.
+	uint8_t        isPressed;    // Is the button being pressed?
+} ButtonT;
+
+
+extern uint8_t __MAGIC_BUTTON;  // Magic ID assigned to us from the GUI.
+
+
+void       buttonClickSet(ButtonT *button, ClickHandlerT handler, void *data);
+ButtonT   *buttonCreate(char *label, ClickHandlerT handler, void *data, ...);
+RegisterT *buttonRegister(uint8_t magic);
+
+
+#endif // BUTTON_H