diff --git a/button.go b/button.go
index ffbdc6d..e303ef4 100644
--- a/button.go
+++ b/button.go
@@ -67,3 +67,11 @@ func (b *Button) setRect(x int, y int, width int, height int) error {
 
 	return b.sysData.setRect(x, y, width, height)
 }
+
+func (b *Button) preferredSize() (width int, height int, err error) {
+	b.lock.Lock()
+	defer b.lock.Unlock()
+
+	width, height = b.sysData.preferredSize()
+	return
+}
diff --git a/checkbox.go b/checkbox.go
index c57059d..4e07a0d 100644
--- a/checkbox.go
+++ b/checkbox.go
@@ -74,3 +74,11 @@ func (c *Checkbox) setRect(x int, y int, width int, height int) error {
 
 	return c.sysData.setRect(x, y, width, height)
 }
+
+func (c *Checkbox) preferredSize() (width int, height int, err error) {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	width, height = c.sysData.preferredSize()
+	return
+}
diff --git a/combobox.go b/combobox.go
index 2f70fa8..255bcf0 100644
--- a/combobox.go
+++ b/combobox.go
@@ -110,3 +110,11 @@ func (c *Combobox) setRect(x int, y int, width int, height int) error {
 
 	return c.sysData.setRect(x, y, width, height)
 }
+
+func (c *Combobox) preferredSize() (width int, height int, err error) {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	width, height = c.sysData.preferredSize()
+	return
+}
diff --git a/control.go b/control.go
index 16f94bb..1c610b1 100644
--- a/control.go
+++ b/control.go
@@ -9,4 +9,5 @@ import (
 type Control interface {
 	make(window *sysData) error
 	setRect(x int, y int, width int, height int) error
+	preferredSize() (width int, height int, err error)
 }
diff --git a/label.go b/label.go
index 9dd7ac5..25cdc5d 100644
--- a/label.go
+++ b/label.go
@@ -62,3 +62,11 @@ func (l *Label) setRect(x int, y int, width int, height int) error {
 
 	return l.sysData.setRect(x, y, width, height)
 }
+
+func (l *Label) preferredSize() (width int, height int, err error) {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	width, height = l.sysData.preferredSize()
+	return
+}
diff --git a/lineedit.go b/lineedit.go
index ab05085..61f1cf7 100644
--- a/lineedit.go
+++ b/lineedit.go
@@ -64,3 +64,11 @@ func (l *LineEdit) setRect(x int, y int, width int, height int) error {
 
 	return l.sysData.setRect(x, y, width, height)
 }
+
+func (l *LineEdit) preferredSize() (width int, height int, err error) {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	width, height = l.sysData.preferredSize()
+	return
+}
diff --git a/listbox.go b/listbox.go
index 9f87ad6..b333f79 100644
--- a/listbox.go
+++ b/listbox.go
@@ -110,3 +110,11 @@ func (l *Listbox) setRect(x int, y int, width int, height int) error {
 
 	return l.sysData.setRect(x, y, width, height)
 }
+
+func (l *Listbox) preferredSize() (width int, height int, err error) {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	width, height = l.sysData.preferredSize()
+	return
+}