Started writing new container code. I still have no idea what I'm doing!

new/windows/container.c

@@ -0,0 +1,63 @@
+// 26 april 2015
+#include "uipriv_windows.h"
+
+#define containerClass L"libui_uiContainerClass"
+
+HWND initialParent;
+
+struct container {
+	HWND hwnd;
+	intmax_t marginLeft;
+	intmax_t marginTop;
+	intmax_t marginRight;
+	intmax_t marginBottom;
+};
+
+static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	// these must always be run, even on the initial parent
+	// why? http://blogs.msdn.com/b/oldnewthing/archive/2010/03/16/9979112.aspx
+//TODO	switch (uMsg) {
+//TODO	}
+
+	return DefWindowProcW(hwnd, uMsg, wParam, lParam);
+}
+
+const char *initContainer(void)
+{
+	WNDCLASSW wc;
+
+	ZeroMemory(&wc, sizeof (WNDCLASSW));
+	wc.lpszClassName = containerClass;
+	wc.lpfnWndProc = containerWndProc;
+	wc.hInstance = hInstance;
+	wc.hIcon = hDefaultIcon;
+	wc.hCursor = hDefaultCursor;
+	wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
+	if (RegisterClassW(&wc) == 0)
+		return "registering uiContainer window class";
+
+	initialParent = CreateWindowExW(0,
+		uiOSContainerClass, L"",
+		WS_OVERLAPPEDWINDOW,
+		0, 0,
+		100, 100,
+		NULL, NULL, hInstance, NULL);
+	if (initialParent == NULL)
+		return "creating initial parent window";
+
+	// just to be safe, disable the initial parent so it can't be interacted with accidentally
+	// if this causes issues for our controls, we can remove it
+	EnableWindow(initialParent, FALSE);
+	return NULL;
+}
+
+// TODO document
+void uiWindowsMakeContainer(uiContainer *c, const WCHAR *class, BOOL isBin)
+{
+}
+
+void uiMakeContainer(uiContainer *c)
+{
+	uiWindowsMakeContainer(c, containerClass, FALSE);
+}