1 files changed, 64 insertions, 0 deletions
diff --git a/redo/containerctrls_windows.c b/redo/containerctrls_windows.c
new file mode 100644
index 0000000..b5f3a97
--- /dev/null
+++ b/redo/containerctrls_windows.c
@@ -0,0 +1,64 @@
+/* 25 july 2014 */
+
+#include "winapi_windows.h"
+#include "_cgo_export.h"
+
+/* provided for cgo's benefit */
+LPCWSTR xWC_TABCONTROL = WC_TABCONTROL;
+
+static LRESULT CALLBACK tabSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR id, DWORD_PTR data)
+{
+	NMHDR *nmhdr = (NMHDR *) lParam;
+	LRESULT r;
+
+	switch (uMsg) {
+	case msgNOTIFY:
+		switch (nmhdr->code) {
+		case TCN_SELCHANGING:
+			r = SendMessageW(hwnd, TCM_GETCURSEL, 0, 0);
+			if (r == (LRESULT) -1)	/* no tab currently selected */
+				return FALSE;
+			tabChanging((void *) data, r);
+			return FALSE;			/* allow change */
+		case TCN_SELCHANGE:
+			tabChanged((void *) data, SendMessageW(hwnd, TCM_GETCURSEL, 0, 0));
+			return 0;
+		}
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	case WM_NCDESTROY:
+		if ((*fv_RemoveWindowSubclass)(hwnd, tabSubProc, id) == FALSE)
+			xpanic("error removing Tab subclass (which was for its own event handler)", GetLastError());
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	default:
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	}
+	xmissedmsg("Tab", "tabSubProc()", uMsg);
+	return 0;		/* unreached */
+}
+
+void setTabSubclass(HWND hwnd, void *data)
+{
+	if ((*fv_SetWindowSubclass)(hwnd, tabSubProc, 0, (DWORD_PTR) data) == FALSE)
+		xpanic("error subclassing Tab to give it its own event handler", GetLastError());
+}
+
+void tabAppend(HWND hwnd, LPCWSTR name)
+{
+	TCITEM item;
+	LRESULT n;
+
+	ZeroMemory(&item, sizeof (TCITEM));
+	item.mask = TCIF_TEXT;
+	/* TODO the C means const; change everything to use LPWSTR instead */
+	item.pszText = name;
+	/* MSDN's example code uses the first invalid index directly for this */
+	n = SendMessageW(hwnd, TCM_GETITEMCOUNT, 0, 0);
+	if (SendMessageW(hwnd, TCM_INSERTITEM, (WPARAM) n, (LPARAM) (&item)) == (LRESULT) -1)
+		xpanic("error adding tab to Tab", GetLastError());
+}
+
+void tabGetContentRect(HWND hwnd, RECT *r)
+{
+	/* not &r; already a pointer (thanks MindChild in irc.efnet.net/#winprog for spotting my failure) */
+	SendMessageW(hwnd, TCM_ADJUSTRECT, FALSE, (LPARAM) r);
+}