Added drawing scaffolds to the new Windows Table.

wintable/new/draw.h

@@ -0,0 +1,40 @@
+// 8 december 2014
+
+static void draw(struct table *t, HDC dc, RECT cliprect, RECT client)
+{
+	Rectangle(dc, 20, 20, 200, 200);
+}
+
+// TODO handle WM_PRINTCLIENT flags?
+
+HANDLER(drawHandlers)
+{
+	HDC dc;
+	PAINTSTRUCT ps;
+	RECT client;
+	RECT r;
+	BOOL wmpaint;
+
+	if (uMsg != WM_PAINT && uMsg != WM_PRINTCLIENT)
+		return FALSE;
+	if (GetClientRect(t->hwnd, &client) == 0)
+		panic("error getting client rect for Table painting");
+	// let's be nice: some controls don't support WM_PRINTCLIENT but do allow you to pass a HDC as the WPARAM to WM_PAINT, so let's support that too as an option
+	// TODO find out how susch controls handle LPARAM
+	wmpaint = uMsg == WM_PAINT && ((HDC) wParam) == NULL;
+	if (wmpaint) {
+		dc = BeginPaint(t->hwnd, &ps);
+		if (dc == NULL)
+			panic("error beginning Table painting");
+		r = ps.rcPaint;
+	} else {
+		dc = (HDC) wParam;
+		r = client;
+	}
+	draw(t, dc, r, client);
+	if (wmpaint)
+		EndPaint(t->hwnd, &ps);
+	// TODO is this correct for WM_PRINTCLIENT? MSDN doesn't say
+	*lResult = 0;
+	return TRUE;
+}

wintable/new/main.c

@@ -57,11 +57,13 @@ struct table {
 #include "header.h"
 #include "children.h"
 #include "resize.h"
+#include "draw.h"
 
 static const handlerfunc handlers[] = {
 	eventHandlers,
 	childrenHandlers,
 	resizeHandler,
+	drawHandlers,
 	NULL,
 };