libui/new/windows/OLDwindow.c

// 6 april 2015
#include "uipriv_windows.h"

struct window {
	uiWindow w;
	HWND hwnd;
	uiOSContainer *content;
	BOOL shownOnce;
	int (*onClosing)(uiWindow *, void *);
	void *onClosingData;
	int margined;
	BOOL canDestroy;
};

#define uiWindowClass L"uiWindowClass"

static LRESULT CALLBACK uiWindowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	struct window *w;
	CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
	WINDOWPOS *wp = (WINDOWPOS *) lParam;
	RECT r;
	HWND contenthwnd;

	w = (struct window *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
	if (w == NULL) {
		if (uMsg == WM_CREATE)
			SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams));
		// fall through to DefWindowProc() anyway
		return DefWindowProcW(hwnd, uMsg, wParam, lParam);
	}
	switch (uMsg) {
	case WM_COMMAND:
		// not a menu
		if (lParam != 0)
			break;
		if (HIWORD(wParam) != 0)
			break;
		runMenuEvent(LOWORD(wParam), uiWindow(w));
		return 0;
	case WM_WINDOWPOSCHANGED:
		if ((wp->flags & SWP_NOSIZE) != 0)
			break;
		// fall through
	case msgUpdateChild:
		if (GetClientRect(w->hwnd, &r) == 0)
			logLastError("error getting window client rect for resize in uiWindowWndProc()");
		contenthwnd = uiOSContainerHWND(w->content);
		if (MoveWindow(contenthwnd, r.left, r.top, r.right - r.left, r.bottom - r.top, TRUE) == 0)
			logLastError("error resizing window content parent in uiWindowWndProc()");
		return 0;
	case WM_CLOSE:
		if (!(*(w->onClosing))(uiWindow(w), w->onClosingData))
			uiWindowDestroy(uiWindow(w));
		return 0;		// we destroyed it already
	case WM_DESTROY:
		if (!w->canDestroy)
			complain("attempt to destroy uiWindow at %p before uiWindowDestroy()", w);
		uiFree(w);
		break;		// fall through to DefWindowProcW()
	}
	return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}

ATOM registerWindowClass(HICON hDefaultIcon, HCURSOR hDefaultCursor)
{
	WNDCLASSW wc;

	ZeroMemory(&wc, sizeof (WNDCLASSW));
	wc.lpszClassName = uiWindowClass;
	wc.lpfnWndProc = uiWindowWndProc;
	wc.hInstance = hInstance;
	wc.hIcon = hDefaultIcon;
	wc.hCursor = hDefaultCursor;
	wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
	return RegisterClassW(&wc);
}

#define exstyle 0
#define style WS_OVERLAPPEDWINDOW

static int defaultOnClosing(uiWindow *w, void *data)
{
	return 1;
}

uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar)
{
	struct window *w;
	RECT adjust;
	WCHAR *wtitle;
	BOOL hasMenubarBOOL;
	HMENU hmenu;

	w = uiNew(struct window);
	w->onClosing = defaultOnClosing;

	hasMenubarBOOL = FALSE;
	if (hasMenubar)
		hasMenubarBOOL = TRUE;

	adjust.left = 0;
	adjust.top = 0;
	adjust.right = width;
	adjust.bottom = height;
	// TODO does not handle menu wrapping; see http://blogs.msdn.com/b/oldnewthing/archive/2003/09/11/54885.aspx
	if (AdjustWindowRectEx(&adjust, style, hasMenubarBOOL, exstyle) == 0)
		logLastError("error getting real window coordinates in uiWindow()");

	wtitle = toUTF16(title);
	w->hwnd = CreateWindowExW(exstyle,
		uiWindowClass, wtitle,
		style,
		CW_USEDEFAULT, CW_USEDEFAULT,
		adjust.right - adjust.left, adjust.bottom - adjust.top,
		NULL, NULL, hInstance, w);
	if (w->hwnd == NULL)
		logLastError("error creating window in uiWindow()");
	uiFree(wtitle);

	w->content = uiNewOSContainer((uintptr_t) (w->hwnd));

	if (hasMenubar) {
		hmenu = makeMenubar();
		if (SetMenu(w->hwnd, hmenu) == 0)
			logLastError("error giving menu to window in uiNewWindow()");
	}

	uiWindow(w)->Destroy = windowDestroy;
	uiWindow(w)->Handle = windowHandle;
	uiWindow(w)->Title = windowTitle;
	uiWindow(w)->SetTitle = windowSetTitle;
	uiWindow(w)->Show = windowShow;
	uiWindow(w)->Hide = windowHide;
	uiWindow(w)->OnClosing = windowOnClosing;
	uiWindow(w)->SetChild = windowSetChild;
	uiWindow(w)->Margined = windowMargined;
	uiWindow(w)->SetMargined = windowSetMargined;

	return uiWindow(w);
}