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+/*
+ * Copyright 2016 Vincent Sanders <vince@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef NETSURF_WINDOWS_COREWINDOW_H
+#define NETSURF_WINDOWS_COREWINDOW_H
+
+#include "netsurf/core_window.h"
+
+/**
+ * nsw32 core window state
+ */
+struct nsw32_corewindow {
+ /** window handle */
+ HWND hWnd;
+
+ /** content width */
+ int content_width;
+
+ /** content height */
+ int content_height;
+
+ /** window title */
+ const char *title;
+
+ /** drag status set by core */
+ core_window_drag_status drag_staus;
+
+ /** table of callbacks for core window operations */
+ struct core_window_callback_table *cb_table;
+
+ /**
+ * callback to draw on drawable area of nsw32 core window
+ *
+ * \param nsw32_cw The nsw32 core window structure.
+ * \param r The rectangle of the window that needs updating.
+ * \return NSERROR_OK on success otherwise apropriate error code
+ */
+ nserror (*draw)(struct nsw32_corewindow *nsw32_cw, int scrollx, int scrolly, struct rect *r);
+
+ /**
+ * callback for keypress on nsw32 core window
+ *
+ * \param nsw32_cw The nsw32 core window structure.
+ * \param nskey The netsurf key code.
+ * \return NSERROR_OK if key processed,
+ * NSERROR_NOT_IMPLEMENTED if key not processed
+ * otherwise apropriate error code
+ */
+ nserror (*key)(struct nsw32_corewindow *nsw32_cw, uint32_t nskey);
+
+ /**
+ * callback for mouse event on nsw32 core window
+ *
+ * \param nsw32_cw The nsw32 core window structure.
+ * \param mouse_state mouse state
+ * \param x location of event
+ * \param y location of event
+ * \return NSERROR_OK on sucess otherwise apropriate error code.
+ */
+ nserror (*mouse)(struct nsw32_corewindow *nsw32_cw, browser_mouse_state mouse_state, int x, int y);
+
+ /**
+ * callback for window close event
+ *
+ * \param nsw32_cw The nsw32 core window structure.
+ * \return NSERROR_OK on sucess otherwise apropriate error code.
+ */
+ nserror (*close)(struct nsw32_corewindow *nsw32_cw);
+};
+
+/**
+ * initialise elements of nsw32 core window.
+ *
+ * As a pre-requisite the draw, key and mouse callbacks must be defined
+ *
+ * \param hInstance The instance to create the core window in
+ * \param hWndParent parent window handle may be NULL for top level window.
+ * \param nsw32_cw A nsw32 core window structure to initialise
+ * \return NSERROR_OK on successful initialisation otherwise error code.
+ */
+nserror nsw32_corewindow_init(HINSTANCE hInstance,
+ HWND hWndParent,
+ struct nsw32_corewindow *nsw32_cw);
+
+/**
+ * finalise elements of nsw32 core window.
+ *
+ * \param nsw32_cw A nsw32 core window structure to initialise
+ * \return NSERROR_OK on successful finalisation otherwise error code.
+ */
+nserror nsw32_corewindow_fini(struct nsw32_corewindow *nsw32_cw);
+
+nserror nsw32_create_corewindow_class(HINSTANCE hInstance);
+
+#endif