diff --git a/pui/container.cpp b/pui/container.cpp
index c79deb3..95d8041 100644
--- a/pui/container.cpp
+++ b/pui/container.cpp
@@ -138,6 +138,7 @@ void HBox::Pack(Widget *widget)
 	widget->y = this->y;
 	widget->h = this->h;
 	if (widget->w < 0) widget->w = this->w - (widget->x - this->x);
+	if (this->x + this->w < widget->x + widget->w) this->w = widget->x + widget->w - this->x;
 	Container::Pack(widget);
 }
 
@@ -148,5 +149,6 @@ void VBox::Pack(Widget *widget)
 	widget->y = (last == NULL) ? this->y : (last->y + last->h + this->padding);
 	widget->w = this->w;
 	if (widget->h < 0) widget->h = this->h - (widget->y - this->y);
+	if (this->y + this->h < widget->y + widget->h) this->h = widget->y + widget->h - this->y;
 	Container::Pack(widget);
 }
diff --git a/pui/slider.cpp b/pui/slider.cpp
index df5eff4..6769719 100644
--- a/pui/slider.cpp
+++ b/pui/slider.cpp
@@ -47,6 +47,18 @@ enum SliderPart {
 	SP_HRIGHT,
 };
 
+HSlider::HSlider(bool big, int h)
+{
+	this->h = h;
+	this->big = big;
+}
+
+VSlider::VSlider(bool big, int w)
+{
+	this->w = w;
+	this->big = big;
+}
+
 float HSlider::GetNewValue(int x, int y)
 {
 	int x2 = this->x + pad;
diff --git a/pui/slider.h b/pui/slider.h
index bf434cb..6e0d8be 100644
--- a/pui/slider.h
+++ b/pui/slider.h
@@ -22,12 +22,16 @@ struct Slider : Widget {
 };
 
 struct HSlider : Slider {
+	HSlider(bool big = false, int h = 24);
+
 	/* virtual */ float GetNewValue(int x, int y);
 
 	/* virtual */ void OnPaint(const PUi *pui) const;
 };
 
 struct VSlider : Slider {
+	VSlider(bool big = false, int w = 24);
+
 	/* virtual */ float GetNewValue(int x, int y);
 
 	/* virtual */ void OnPaint(const PUi *pui) const;