Added RadioButtons.

radiobuttons.go

@@ -0,0 +1,81 @@
+// 12 december 2015
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "ui.h"
+import "C"
+
+// RadioButtons is a Control that represents a set of checkable
+// buttons from which exactly one may be chosen by the user.
+// 
+// Due to platform-specific limitations, it is impossible for a
+// RadioButtons to have no button selected (unless there are no
+// buttons).
+type RadioButtons struct {
+	c	*C.uiControl
+	r	*C.uiRadioButtons
+}
+
+// NewRadioButtons creates a new RadioButtons.
+func NewRadioButtons() *RadioButtons {
+	r := new(RadioButtons)
+
+	r.r = C.uiNewRadioButtons()
+	r.c = (*C.uiControl)(unsafe.Pointer(r.r))
+
+	return r
+}
+
+// Destroy destroys the RadioButtons.
+func (r *RadioButtons) Destroy() {
+	C.uiControlDestroy(r.c)
+}
+
+// LibuiControl returns the libui uiControl pointer that backs
+// the Window. This is only used by package ui itself and should
+// not be called by programs.
+func (r *RadioButtons) LibuiControl() uintptr {
+	return uintptr(unsafe.Pointer(r.c))
+}
+
+// Handle returns the OS-level handle associated with this RadioButtons.
+// On Windows this is an HWND of a libui-internal class; its
+// child windows are instances of the standard Windows API
+// BUTTON class (as provided by Common Controls version 6).
+// On GTK+ this is a pointer to a GtkBox containing GtkRadioButtons.
+// On OS X this is a pointer to a NSMatrix with NSButtonCell cells.
+func (r *RadioButtons) Handle() uintptr {
+	return uintptr(C.uiControlHandle(r.c))
+}
+
+// Show shows the RadioButtons.
+func (r *RadioButtons) Show() {
+	C.uiControlShow(r.c)
+}
+
+// Hide hides the RadioButtons.
+func (r *RadioButtons) Hide() {
+	C.uiControlHide(r.c)
+}
+
+// Enable enables the RadioButtons.
+func (r *RadioButtons) Enable() {
+	C.uiControlEnable(r.c)
+}
+
+// Disable disables the RadioButtons.
+func (r *RadioButtons) Disable() {
+	C.uiControlDisable(r.c)
+}
+
+// Append adds the named button to the end of the RadioButtons.
+// If this button is the first button, it is automatically selected.
+func (r *RadioButtons) Append(text string) {
+	ctext := C.CString(text)
+	C.uiRadioButtonsAppend(r.r, ctext)
+	freestr(ctext)
+}

zz_test.go

@@ -11,7 +11,10 @@ func TestIt(t *testing.T) {
 			Quit()
 			return true
 		})
-		s := NewDateTimePicker()
+		s := NewRadioButtons()
+		s.Append("Item 1")
+		s.Append("Item 2")
+		s.Append("Item 3")
 		w.SetChild(s)
 		w.SetMargined(true)
 		w.Show()