diff --git a/src/kernel/ntqstyle.h b/src/kernel/ntqstyle.h
index fe16c425..01a3e821 100644
--- a/src/kernel/ntqstyle.h
+++ b/src/kernel/ntqstyle.h
@@ -287,9 +287,14 @@ class Q_EXPORT TQStyleControlElementData {
 		TQ_UINT32 topLevelWidgetFlags;
 		TQPixmap paletteBgPixmap;
 
+#ifdef ENABLE_TQSTYLECONTROLELEMENTDATA_SLOW_COPY
+	public:
+		TQStyleControlElementData(const TQStyleControlElementData&);
+#else // ENABLE_TQSTYLECONTROLELEMENTDATA_SLOW_COPY
 	private:
 		// Disable copy constructor
 		TQStyleControlElementData(const TQStyleControlElementData&);
+#endif // ENABLE_TQSTYLECONTROLELEMENTDATA_SLOW_COPY
 
 };
 
diff --git a/src/kernel/qstyle.cpp b/src/kernel/qstyle.cpp
index 189a9757..8529305d 100644
--- a/src/kernel/qstyle.cpp
+++ b/src/kernel/qstyle.cpp
@@ -2836,4 +2836,67 @@ TQStyleControlElementData::~TQStyleControlElementData() {
 	//
 }
 
+TQStyleControlElementData::TQStyleControlElementData(const TQStyleControlElementData& orig) {
+	isNull = orig.isNull;
+	widgetObjectTypes = orig.widgetObjectTypes;
+	allDataPopulated = orig.allDataPopulated;
+	wflags = orig.wflags;
+	windowState = orig.windowState;
+	bgPixmap = orig.bgPixmap;
+	bgBrush = orig.bgBrush;
+	bgColor = orig.bgColor;
+	bgOffset = orig.bgOffset;
+	backgroundMode = orig.backgroundMode;
+	fgPixmap = orig.fgPixmap;
+	fgColor = orig.fgColor;
+	colorGroup = orig.colorGroup;
+	geometry = orig.geometry;
+	rect = orig.rect;
+	pos = orig.pos;
+	icon = orig.icon;
+	iconSet = orig.iconSet;
+	text = orig.text;
+	orientation = orig.orientation;
+	activeItemPaletteBgColor = orig.activeItemPaletteBgColor;
+	palette = orig.palette;
+	totalSteps = orig.totalSteps;
+	currentStep = orig.currentStep;
+	tickMarkSetting = orig.tickMarkSetting;
+	tickInterval = orig.tickInterval;
+	minSteps = orig.minSteps;
+	maxSteps = orig.maxSteps;
+	startStep = orig.startStep;
+	pageStep = orig.pageStep;
+	lineStep = orig.lineStep;
+	dlgVisibleButtons = orig.dlgVisibleButtons;
+	dlgVisibleSizeHints = orig.dlgVisibleSizeHints;
+	progressText = orig.progressText;
+	textLabel = orig.textLabel;
+	font = orig.font;
+	percentageVisible = orig.percentageVisible;
+	dwData = orig.dwData;
+	toolButtonTextPosition = orig.toolButtonTextPosition;
+	popupDelay = orig.popupDelay;
+	titleBarData = orig.titleBarData;
+	spinWidgetData = orig.spinWidgetData;
+	parentWidgetData = orig.parentWidgetData;
+	viewportData = orig.viewportData;
+	listViewData = orig.listViewData;
+	tabBarData = orig.tabBarData;
+	checkListItemData = orig.checkListItemData;
+	comboBoxLineEditFlags = orig.comboBoxLineEditFlags;
+	frameStyle = orig.frameStyle;
+	sliderRect = orig.sliderRect;
+	activePainter = orig.activePainter;
+	toolBarData = orig.toolBarData;
+	comboBoxListBoxFlags = orig.comboBoxListBoxFlags;
+	paletteBgColor = orig.paletteBgColor;
+	parentWidgetFlags = orig.parentWidgetFlags;
+	name = orig.name;
+	caption = orig.caption;
+	topLevelWidgetData = orig.topLevelWidgetData;
+	topLevelWidgetFlags = orig.topLevelWidgetFlags;
+	paletteBgPixmap = orig.paletteBgPixmap;
+}
+
 #endif // QT_NO_STYLE