1 files changed, 82 insertions, 0 deletions
diff --git a/group_windows.go b/group_windows.go
new file mode 100644
index 0000000..fda95e3
--- /dev/null
+++ b/group_windows.go
@@ -0,0 +1,82 @@
+// 15 august 2014
+
+package ui
+
+// #include "winapi_windows.h"
+import "C"
+
+type group struct {
+	_hwnd	C.HWND
+	_textlen	C.LONG
+
+	*container
+}
+
+func newGroup(text string, control Control) Group {
+	hwnd := C.newControl(buttonclass,
+		C.BS_GROUPBOX,
+		C.WS_EX_CONTROLPARENT)
+	g := &group{
+		_hwnd:		hwnd,
+		container:		newContainer(control),
+	}
+	g.SetText(text)
+	C.controlSetControlFont(g._hwnd)
+	g.container.setParent(g._hwnd)
+	g.container.isGroup = true
+	return g
+}
+
+func (g *group) Text() string {
+	return baseText(g)
+}
+
+func (g *group) SetText(text string) {
+	baseSetText(g, text)
+}
+
+func (g *group) hwnd() C.HWND {
+	return g._hwnd
+}
+
+func (g *group) textlen() C.LONG {
+	return g._textlen
+}
+
+func (g *group) settextlen(len C.LONG) {
+	g._textlen = len
+}
+
+func (g *group) setParent(p *controlParent) {
+	basesetParent(g, p)
+}
+
+func (g *group) allocate(x int, y int, width int, height int, d *sizing) []*allocation {
+	return baseallocate(g, x, y, width, height, d)
+}
+
+func (g *group) preferredSize(d *sizing) (width, height int) {
+	width, height = g.child.preferredSize(d)
+	if width < int(g._textlen) {		// if the text is longer, try not to truncate
+		width = int(g._textlen)
+	}
+	// the two margin constants come from container_windows.go
+	return width, height + fromdlgunitsY(groupYMarginTop, d) + fromdlgunitsY(groupYMarginBottom, d)
+}
+
+func (g *group) commitResize(c *allocation, d *sizing) {
+	var r C.RECT
+
+	// pretend that the client area of the group box only includes the actual empty space
+	// container will handle the necessary adjustments properly
+	r.left = 0
+	r.top = 0
+	r.right = C.LONG(c.width)
+	r.bottom = C.LONG(c.height)
+	g.container.move(&r)
+	basecommitResize(g, c, d)
+}
+
+func (g *group) getAuxResizeInfo(d *sizing) {
+	basegetAuxResizeInfo(g, d)
+}