6 files changed, 17 insertions, 12 deletions
diff --git a/frontends/amiga/corewindow.c b/frontends/amiga/corewindow.c
index 44798d24b..bfb0eb202 100644
--- a/frontends/amiga/corewindow.c
+++ b/frontends/amiga/corewindow.c
@@ -826,7 +826,8 @@ ami_cw_invalidate_area(struct core_window *cw, const struct rect *r)
 
 
 static nserror
-ami_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
+ami_cw_get_window_dimensions(const struct core_window *cw,
+		int *width, int *height)
 {
 	struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
 
@@ -867,7 +868,7 @@ ami_cw_update_size(struct core_window *cw, int width, int height)
 
 
 static nserror
-ami_cw_get_scroll(struct core_window *cw, int *x, int *y)
+ami_cw_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 	struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
 	ULONG win_x0, win_y0;
diff --git a/frontends/atari/treeview.c b/frontends/atari/treeview.c
index 49d26ef5b..6ab09991a 100644
--- a/frontends/atari/treeview.c
+++ b/frontends/atari/treeview.c
@@ -484,7 +484,7 @@ atari_treeview_set_scroll(struct core_window *cw, int x, int y)
 }
 
 static nserror
-atari_treeview_get_scroll(struct core_window *cw, int *x, int *y)
+atari_treeview_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 	/* TODO */
 	return NSERROR_NOT_IMPLEMENTED;
@@ -499,7 +499,7 @@ atari_treeview_get_scroll(struct core_window *cw, int *x, int *y)
  * \param height	to be set to viewport height in px, if non NULL
  */
 static nserror
-atari_treeview_get_window_dimensions(struct core_window *cw,
+atari_treeview_get_window_dimensions(const struct core_window *cw,
 				     int *width,
 				     int *height)
 {
diff --git a/frontends/framebuffer/corewindow.c b/frontends/framebuffer/corewindow.c
index a27d666f2..dbd8d013b 100644
--- a/frontends/framebuffer/corewindow.c
+++ b/frontends/framebuffer/corewindow.c
@@ -160,7 +160,7 @@ fb_cw_set_scroll(struct core_window *cw, int x, int y)
 
 
 static nserror
-fb_cw_get_scroll(struct core_window *cw, int *x, int *y)
+fb_cw_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 /*	struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
 
@@ -171,7 +171,8 @@ fb_cw_get_scroll(struct core_window *cw, int *x, int *y)
 
 
 static nserror
-fb_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
+fb_cw_get_window_dimensions(const struct core_window *cw,
+		int *width, int *height)
 {
 	struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
 
diff --git a/frontends/gtk/corewindow.c b/frontends/gtk/corewindow.c
index cb78212dd..fc26f1394 100644
--- a/frontends/gtk/corewindow.c
+++ b/frontends/gtk/corewindow.c
@@ -633,7 +633,7 @@ nsgtk_cw_set_scroll(struct core_window *cw, int x, int y)
  * \param r rectangle that needs scrolling.
  */
 static nserror
-nsgtk_cw_get_scroll(struct core_window *cw, int *x, int *y)
+nsgtk_cw_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 	struct nsgtk_corewindow *nsgtk_cw = (struct nsgtk_corewindow *)cw;
 	GtkAdjustment *vadj;
@@ -660,7 +660,8 @@ nsgtk_cw_get_scroll(struct core_window *cw, int *x, int *y)
  * \param[out] height to be set to viewport height in px
  */
 static nserror
-nsgtk_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
+nsgtk_cw_get_window_dimensions(const struct core_window *cw,
+		int *width, int *height)
 {
 	struct nsgtk_corewindow *nsgtk_cw = (struct nsgtk_corewindow *)cw;
 	GtkAdjustment *vadj;
diff --git a/frontends/riscos/corewindow.c b/frontends/riscos/corewindow.c
index 8004dcc95..4398fca28 100644
--- a/frontends/riscos/corewindow.c
+++ b/frontends/riscos/corewindow.c
@@ -832,7 +832,7 @@ ro_cw_update_size(struct core_window *cw, int width, int height)
  * Callback from the core to scroll the visible content.
  */
 static nserror
-ro_cw_get_scroll(struct core_window *cw, int *x, int *y)
+ro_cw_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 	struct ro_corewindow *ro_cw = (struct ro_corewindow *)cw;
 	wimp_window_state state = {
@@ -888,7 +888,8 @@ ro_cw_set_scroll(struct core_window *cw, int x, int y)
  * \param[out] height to be set to viewport height in px
  */
 static nserror
-ro_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
+ro_cw_get_window_dimensions(const struct core_window *cw,
+		int *width, int *height)
 {
 	struct ro_corewindow *ro_cw = (struct ro_corewindow *)cw;
 	os_error *error;
diff --git a/frontends/windows/corewindow.c b/frontends/windows/corewindow.c
index be2891fcd..7d6dc69b0 100644
--- a/frontends/windows/corewindow.c
+++ b/frontends/windows/corewindow.c
@@ -466,7 +466,7 @@ nsw32_cw_set_scroll(struct core_window *cw, int x, int y)
 
 
 static nserror
-nsw32_cw_get_scroll(struct core_window *cw, int *x, int *y)
+nsw32_cw_get_scroll(const struct core_window *cw, int *x, int *y)
 {
 	/** /todo call getscroll apropriately */
 	return NSERROR_NOT_IMPLEMENTED;
@@ -481,7 +481,8 @@ nsw32_cw_get_scroll(struct core_window *cw, int *x, int *y)
  * \param[out] height to be set to viewport height in px
  */
 static nserror
-nsw32_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
+nsw32_cw_get_window_dimensions(const struct core_window *cw,
+		int *width, int *height)
 {
 	struct nsw32_corewindow *nsw32_cw = (struct nsw32_corewindow *)cw;