diff --git a/source/blender/editors/screen/Makefile b/source/blender/editors/screen/Makefile
index b905d7c197b..16ff8867eb0 100644
--- a/source/blender/editors/screen/Makefile
+++ b/source/blender/editors/screen/Makefile
@@ -44,6 +44,7 @@ CPPFLAGS += -I../../blenloader
 CPPFLAGS += -I../../blenkernel
 CPPFLAGS += -I../../blenlib
 CPPFLAGS += -I../../makesdna
+CPPFLAGS += -I../../makesrna
 CPPFLAGS += -I../../imbuf
 CPPFLAGS += -I../../python
 CPPFLAGS += -I$(NAN_GUARDEDALLOC)/include
diff --git a/source/blender/editors/screen/SConscript b/source/blender/editors/screen/SConscript
index 04a1d7f4388..5193306df0a 100644
--- a/source/blender/editors/screen/SConscript
+++ b/source/blender/editors/screen/SConscript
@@ -4,7 +4,7 @@ Import ('env')
 sources = env.Glob('*.c')
 
 incs = '../include ../../blenlib ../../blenkernel ../../makesdna ../../imbuf'
-incs += ' ../../blenloader ../../windowmanager ../../python'
+incs += ' ../../blenloader ../../windowmanager ../../python ../../makesrna'
 incs += ' #/intern/guardedalloc #/extern/glew/include'
 
 env.BlenderLib ( 'bf_editors_screen', sources, Split(incs), [], libtype=['core','intern'], priority=[30, 35] )
diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index e2680f9cb02..a2272f1b5b6 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -42,6 +42,9 @@
 #include "ED_screen.h"
 #include "ED_screen_types.h"
 
+#include "RNA_access.h"
+#include "RNA_define.h"
+
 #include "screen_intern.h"	/* own module include */
 
 /* ************** Exported Poll tests ********************** */
@@ -463,11 +466,8 @@ static int area_move_init (bContext *C, wmOperator *op)
 	int x, y;
 
 	/* required properties */
-	if(!(OP_get_int(op, "x", &x) && OP_get_int(op, "y", &y)))
-		return 0;
-
-	/* default properties */
-	OP_verify_int(op, "delta", 0, NULL);
+	x= RNA_int_get(op->rna, "x");
+	y= RNA_int_get(op->rna, "y");
 
 	/* setup */
 	actedge= screen_find_active_scredge(C->screen, x, y);
@@ -523,7 +523,7 @@ static void area_move_apply(bContext *C, wmOperator *op)
 	sAreaMoveData *md= op->customdata;
 	int delta;
 	
-	OP_get_int(op, "delta", &delta);
+	delta= RNA_int_get(op->rna, "delta");
 	area_move_apply_do(C, md->origval, delta, md->dir, md->bigger, md->smaller);
 }
 
@@ -552,8 +552,8 @@ static int area_move_exec(bContext *C, wmOperator *op)
 /* interaction callback */
 static int area_move_invoke(bContext *C, wmOperator *op, wmEvent *event)
 {
-	OP_verify_int(op, "x", event->x, NULL);
-	OP_verify_int(op, "y", event->y, NULL);
+	RNA_int_default(op->rna, "x", event->x);
+	RNA_int_default(op->rna, "y", event->y);
 
 	if(!area_move_init(C, op)) 
 		return OPERATOR_PASS_THROUGH;
@@ -568,7 +568,7 @@ static int area_move_cancel(bContext *C, wmOperator *op)
 {
 	WM_event_remove_modal_handler(&C->window->handlers, op);				
 
-	OP_set_int(op, "delta", 0);
+	RNA_int_set(op->rna, "delta", 0);
 	area_move_apply(C, op);
 	area_move_exit(C, op);
 
@@ -583,14 +583,14 @@ static int area_move_modal(bContext *C, wmOperator *op, wmEvent *event)
 
 	md= op->customdata;
 
-	OP_get_int(op, "x", &x);
-	OP_get_int(op, "y", &y);
+	x= RNA_int_get(op->rna, "x");
+	y= RNA_int_get(op->rna, "y");
 
 	/* execute the events */
 	switch(event->type) {
 		case MOUSEMOVE:
 			delta= (md->dir == 'v')? event->x - x: event->y - y;
-			OP_set_int(op, "delta", delta);
+			RNA_int_set(op->rna, "delta", delta);
 
 			area_move_apply(C, op);
 			break;
@@ -612,6 +612,8 @@ static int area_move_modal(bContext *C, wmOperator *op, wmEvent *event)
 
 void ED_SCR_OT_area_move(wmOperatorType *ot)
 {
+	PropertyRNA *prop;
+
 	/* identifiers */
 	ot->name= "Move area edges";
 	ot->idname= "ED_SCR_OT_area_move";
@@ -622,6 +624,11 @@ void ED_SCR_OT_area_move(wmOperatorType *ot)
 	ot->modal= area_move_modal;
 
 	ot->poll= ED_operator_screen_mainwinactive; /* when mouse is over area-edge */
+
+	/* rna */
+	prop= RNA_def_property(ot->rna, "x", PROP_INT, PROP_NONE);
+	prop= RNA_def_property(ot->rna, "y", PROP_INT, PROP_NONE);
+	prop= RNA_def_property(ot->rna, "delta", PROP_INT, PROP_NONE);
 }
 
 /* ************** split area operator *********************************** */
@@ -687,8 +694,7 @@ static int area_split_init(bContext *C, wmOperator *op)
 	if(C->area==NULL) return 0;
 	
 	/* required properties */
-	OP_verify_float(op, "fac", 0.5f, NULL);
-	OP_verify_int(op, "dir", 'h', &dir);
+	dir= RNA_enum_get(op->rna, "dir");
 	
 	/* minimal size */
 	if(dir=='v' && C->area->winx < 2*AREAMINX) return 0;
@@ -740,8 +746,8 @@ static void area_split_apply(bContext *C, wmOperator *op)
 	float fac;
 	int dir;
 	
-	OP_get_float(op, "fac", &fac);
-	OP_get_int(op, "dir", &dir);
+	fac= RNA_float_get(op->rna, "fac");
+	dir= RNA_enum_get(op->rna, "dir");
 
 	sd->narea= area_split(C->window, C->screen, sd->sarea, dir, fac);
 	
@@ -801,13 +807,13 @@ static int area_split_invoke(bContext *C, wmOperator *op, wmEvent *event)
 		/* prepare operator state vars */
 		if(sad->gesture_dir==AZONE_N || sad->gesture_dir==AZONE_S) {
 			dir= 'h';
-			OP_set_float(op, "fac", ((float)(event->x - sad->sa1->v1->vec.x)) / (float)sad->sa1->winx);
+			RNA_float_set(op->rna, "fac", ((float)(event->x - sad->sa1->v1->vec.x)) / (float)sad->sa1->winx);
 		}
 		else {
 			dir= 'v';
-			OP_set_float(op, "fac", ((float)(event->y - sad->sa1->v1->vec.y)) / (float)sad->sa1->winy);
+			RNA_float_set(op->rna, "fac", ((float)(event->y - sad->sa1->v1->vec.y)) / (float)sad->sa1->winy);
 		}
-		OP_set_int(op, "dir", dir);
+		RNA_enum_set(op->rna, "dir", dir);
 
 		/* general init, also non-UI case, adds customdata, sets area and defaults */
 		if(!area_split_init(C, op))
@@ -870,8 +876,7 @@ static int area_split_modal(bContext *C, wmOperator *op, wmEvent *event)
 	/* execute the events */
 	switch(event->type) {
 		case MOUSEMOVE:
-			
-			OP_get_int(op, "dir", &dir);
+			dir= RNA_enum_get(op->rna, "dir");
 			
 			sd->delta= (dir == 'v')? event->x - sd->origval: event->y - sd->origval;
 			area_move_apply_do(C, sd->origval, sd->delta, dir, sd->bigger, sd->smaller);
@@ -896,6 +901,9 @@ static int area_split_modal(bContext *C, wmOperator *op, wmEvent *event)
 
 void ED_SCR_OT_area_split(wmOperatorType *ot)
 {
+	PropertyRNA *prop;
+    static EnumPropertyItem prop_direction_items[] = {{'h', "HORIZONTAL", "Horizontal"}, {'v', "VERTICAL", "Vertical"}, {0, NULL, NULL}};
+
 	ot->name = "Split area";
 	ot->idname = "ED_SCR_OT_area_split";
 	
@@ -904,6 +912,15 @@ void ED_SCR_OT_area_split(wmOperatorType *ot)
 	ot->modal= area_split_modal;
 	
 	ot->poll= ED_operator_screenactive; /* XXX should be area active */
+
+	/* rna */
+	prop= RNA_def_property(ot->rna, "dir", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_items(prop, prop_direction_items);
+	RNA_def_property_enum_default(prop, 'h');
+
+	prop= RNA_def_property(ot->rna, "fac", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_range(prop, 0.0, 1.0);
+	RNA_def_property_float_default(prop, 0.5f);
 }
 
 /* ************** join area operator ********************************************** */
@@ -956,10 +973,10 @@ static int area_join_init(bContext *C, wmOperator *op)
 	int x2, y2;
 
 	/* required properties, make negative to get return 0 if not set by caller */
-	OP_verify_int(op, "x1", -100, &x1);
-	OP_verify_int(op, "y1", -100, &y1);
-	OP_verify_int(op, "x2", -100, &x2);
-	OP_verify_int(op, "y2", -100, &y2);
+	x1= RNA_int_get(op->rna, "x1");
+	y1= RNA_int_get(op->rna, "y1");
+	x2= RNA_int_get(op->rna, "x2");
+	y2= RNA_int_get(op->rna, "y2");
 	
 	sa1 = screen_areahascursor(C->screen, x1, y1);
 	sa2 = screen_areahascursor(C->screen, x2, y2);
@@ -1035,10 +1052,10 @@ static int area_join_invoke(bContext *C, wmOperator *op, wmEvent *event)
 			return OPERATOR_PASS_THROUGH;
 		
 		/* prepare operator state vars */
-		OP_set_int(op, "x1", sad->x);
-		OP_set_int(op, "y1", sad->y);
-		OP_set_int(op, "x2", event->x);
-		OP_set_int(op, "y2", event->y);
+		RNA_int_set(op->rna, "x1", sad->x);
+		RNA_int_set(op->rna, "y1", sad->y);
+		RNA_int_set(op->rna, "x2", event->x);
+		RNA_int_set(op->rna, "y2", event->y);
 
 		if(!area_join_init(C, op)) 
 			return OPERATOR_PASS_THROUGH;
@@ -1163,6 +1180,8 @@ static int area_join_modal(bContext *C, wmOperator *op, wmEvent *event)
 /* Operator for joining two areas (space types) */
 void ED_SCR_OT_area_join(wmOperatorType *ot)
 {
+	PropertyRNA *prop;
+
 	/* identifiers */
 	ot->name= "Join area";
 	ot->idname= "ED_SCR_OT_area_join";
@@ -1173,6 +1192,16 @@ void ED_SCR_OT_area_join(wmOperatorType *ot)
 	ot->modal= area_join_modal;
 
 	ot->poll= ED_operator_screenactive;
+
+	/* rna */
+	prop= RNA_def_property(ot->rna, "x1", PROP_INT, PROP_NONE);
+	RNA_def_property_int_default(prop, -100);
+	prop= RNA_def_property(ot->rna, "y1", PROP_INT, PROP_NONE);
+	RNA_def_property_int_default(prop, -100);
+	prop= RNA_def_property(ot->rna, "x2", PROP_INT, PROP_NONE);
+	RNA_def_property_int_default(prop, -100);
+	prop= RNA_def_property(ot->rna, "y2", PROP_INT, PROP_NONE);
+	RNA_def_property_int_default(prop, -100);
 }
 
 /* ************** border select operator (test only) ***************************** */
diff --git a/source/blender/editors/space_outliner/space_outliner.c b/source/blender/editors/space_outliner/space_outliner.c
index 01bab910a26..e272864d163 100644
--- a/source/blender/editors/space_outliner/space_outliner.c
+++ b/source/blender/editors/space_outliner/space_outliner.c
@@ -511,6 +511,9 @@ static SpaceLink *outliner_duplicate(SpaceLink *sl)
 {
 	SpaceOops *soutliner= (SpaceOops *)sl;
 	SpaceOops *soutlinern= MEM_dupallocN(soutliner);
+
+	if(soutlinern->rnapath)
+		soutlinern->rnapath= MEM_dupallocN(soutlinern->rnapath);
 	
 	return (SpaceLink *)soutlinern;
 }
diff --git a/source/blender/editors/space_time/Makefile b/source/blender/editors/space_time/Makefile
index c64a81695bf..20877b48559 100644
--- a/source/blender/editors/space_time/Makefile
+++ b/source/blender/editors/space_time/Makefile
@@ -44,6 +44,7 @@ CPPFLAGS += -I../../blenloader
 CPPFLAGS += -I../../blenkernel
 CPPFLAGS += -I../../blenlib
 CPPFLAGS += -I../../makesdna
+CPPFLAGS += -I../../makesrna
 CPPFLAGS += -I../../imbuf
 CPPFLAGS += -I../../python
 CPPFLAGS += -I$(NAN_GUARDEDALLOC)/include
diff --git a/source/blender/editors/space_time/SConscript b/source/blender/editors/space_time/SConscript
index b83e79ff3e6..5295aa25e28 100644
--- a/source/blender/editors/space_time/SConscript
+++ b/source/blender/editors/space_time/SConscript
@@ -4,6 +4,7 @@ Import ('env')
 sources = env.Glob('*.c')
 
 incs = '../include ../../blenlib ../../blenkernel ../../makesdna ../../imbuf'
-incs += '../../windowmanager #/intern/guardedalloc #/extern/glew/include'
+incs += ' ../../windowmanager #/intern/guardedalloc #/extern/glew/include'
+incs += ' ../../makesrna'
 
 env.BlenderLib ( 'bf_editors_space_time', sources, Split(incs), [], libtype=['core','intern'], priority=[35, 40] )
diff --git a/source/blender/editors/space_time/time_ops.c b/source/blender/editors/space_time/time_ops.c
index bc9cb3fa762..e95f0238ab5 100644
--- a/source/blender/editors/space_time/time_ops.c
+++ b/source/blender/editors/space_time/time_ops.c
@@ -42,6 +42,9 @@
 #include "UI_interface.h"
 #include "UI_view2d.h"
 
+#include "RNA_access.h"
+#include "RNA_define.h"
+
 #include "WM_api.h"
 #include "WM_types.h"
 
@@ -50,11 +53,7 @@
 static int change_frame_init(bContext *C, wmOperator *op)
 {
 	SpaceTime *stime= C->area->spacedata.first;
-	int cfra;
 
-	if(!OP_get_int(op, "frame", &cfra))
-		return 0;
-	
 	stime->flag |= TIME_CFRA_NUM;
 	
 	return 1;
@@ -64,7 +63,7 @@ static void change_frame_apply(bContext *C, wmOperator *op)
 {
 	int cfra;
 
-	OP_get_int(op, "frame", &cfra);
+	cfra= RNA_int_get(op->rna, "frame");
 
 	if(cfra < MINFRAME)
 		cfra= MINFRAME;
@@ -120,7 +119,7 @@ static int frame_from_event(bContext *C, wmEvent *event)
 
 static int change_frame_invoke(bContext *C, wmOperator *op, wmEvent *event)
 {
-	OP_verify_int(op, "frame", frame_from_event(C, event), NULL);
+	RNA_int_default(op->rna, "frame", frame_from_event(C, event));
 	change_frame_init(C, op);
 	change_frame_apply(C, op);
 
@@ -141,7 +140,7 @@ static int change_frame_modal(bContext *C, wmOperator *op, wmEvent *event)
 	/* execute the events */
 	switch(event->type) {
 		case MOUSEMOVE:
-			OP_set_int(op, "frame", frame_from_event(C, event));
+			RNA_int_set(op->rna, "frame", frame_from_event(C, event));
 			change_frame_apply(C, op);
 			break;
 			
@@ -159,6 +158,8 @@ static int change_frame_modal(bContext *C, wmOperator *op, wmEvent *event)
 
 void ED_TIME_OT_change_frame(wmOperatorType *ot)
 {
+	PropertyRNA *prop;
+
 	/* identifiers */
 	ot->name= "Change frame";
 	ot->idname= "ED_TIME_OT_change_frame";
@@ -168,6 +169,9 @@ void ED_TIME_OT_change_frame(wmOperatorType *ot)
 	ot->invoke= change_frame_invoke;
 	ot->cancel= change_frame_cancel;
 	ot->modal= change_frame_modal;
+
+	/* rna */
+	prop= RNA_def_property(ot->rna, "frame", PROP_INT, PROP_NONE);
 }
 
 /* ************************** registration **********************************/
diff --git a/source/blender/makesdna/DNA_windowmanager_types.h b/source/blender/makesdna/DNA_windowmanager_types.h
index aa2b0938775..d18329c60d5 100644
--- a/source/blender/makesdna/DNA_windowmanager_types.h
+++ b/source/blender/makesdna/DNA_windowmanager_types.h
@@ -47,6 +47,8 @@ struct wmLocal;
 struct bScreen;
 struct uiBlock;
 struct wmSubWindow;
+struct StructRNA;
+struct PointerRNA;
 
 /* windowmanager is saved, tag WMAN */
 typedef struct wmWindowManager {
@@ -132,8 +134,8 @@ typedef struct wmOperatorType {
 	/* panel for redo and repeat */
 	void *(*uiBlock)(struct wmOperator *);
 	
-	char *customname;	/* dna name */
-	void *customdata;	/* defaults */
+	/* rna for properties */
+	struct StructRNA *rna;
 	
 	short flag;
 
@@ -170,6 +172,7 @@ typedef struct wmOperator {
 	IDProperty *properties;
 
 	/* runtime */
+	struct PointerRNA *rna;
 	ListBase *modallist;
 } wmOperator;
 
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index d16a085b0be..86616616f98 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -31,6 +31,7 @@
 #include "BLI_dynstr.h"
 
 #include "BKE_idprop.h"
+#include "BKE_utildefines.h"
 
 #include "DNA_ID.h"
 #include "DNA_windowmanager_types.h"
@@ -107,6 +108,48 @@ static IDProperty *rna_idproperty_find(PointerRNA *ptr, const char *name)
 	return NULL;
 }
 
+static int rna_idproperty_verify_valid(PropertyRNA *prop, IDProperty *idprop)
+{
+	/* this verifies if the idproperty actually matches the property
+	 * description and otherwise removes it. this is to ensure that
+	 * rna property access is type safe, e.g. if you defined the rna
+	 * to have a certain array length you can count on that staying so */
+	
+	switch(idprop->type) {
+		case IDP_ARRAY:
+			if(prop->arraylength != idprop->len)
+				return 0;
+
+			if(idprop->subtype == IDP_FLOAT && prop->type != PROP_FLOAT)
+				return 0;
+			if(idprop->subtype == IDP_INT && !ELEM3(prop->type, PROP_BOOLEAN, PROP_INT, PROP_ENUM))
+				return 0;
+
+			break;
+		case IDP_INT:
+			if(!ELEM3(prop->type, PROP_BOOLEAN, PROP_INT, PROP_ENUM))
+				return 0;
+			break;
+		case IDP_FLOAT:
+		case IDP_DOUBLE:
+			if(prop->type != PROP_FLOAT)
+				return 0;
+			break;
+		case IDP_STRING:
+			if(prop->type != PROP_STRING)
+				return 0;
+			break;
+		case IDP_GROUP:
+			if(prop->type != PROP_POINTER)
+				return 0;
+			break;
+		default:
+			return 0;
+	}
+
+	return 1;
+}
+
 IDProperty *rna_idproperty_check(PropertyRNA **prop, PointerRNA *ptr)
 {
 	/* This is quite a hack, but avoids some complexity in the API. we
@@ -117,8 +160,20 @@ IDProperty *rna_idproperty_check(PropertyRNA **prop, PointerRNA *ptr)
 	 * pointer to the IDProperty. */
 
 	if((*prop)->magic == RNA_MAGIC) {
-		if((*prop)->flag & PROP_IDPROPERTY)
-			return rna_idproperty_find(ptr, (*prop)->identifier);
+		if((*prop)->flag & PROP_IDPROPERTY) {
+			IDProperty *idprop= rna_idproperty_find(ptr, (*prop)->identifier);
+
+			if(idprop && !rna_idproperty_verify_valid(*prop, idprop)) {
+				IDProperty *group= rna_idproperties_get(ptr->type, ptr->data, 0);
+
+				IDP_RemFromGroup(group, idprop);
+				IDP_FreeProperty(idprop);
+				MEM_freeN(idprop);
+				return NULL;
+			}
+
+			return idprop;
+		}
 		else
 			return NULL;
 	}
diff --git a/source/blender/windowmanager/SConscript b/source/blender/windowmanager/SConscript
index cdc5edfeaa6..7e591ad34f6 100644
--- a/source/blender/windowmanager/SConscript
+++ b/source/blender/windowmanager/SConscript
@@ -9,6 +9,7 @@ sources = env.Glob('intern/*.c')
 incs = '. ../editors/include ../python ../makesdna ../blenlib ../blenkernel'
 incs += ' ../nodes ../imbuf ../blenloader ../render/extern/include'
 incs += ' ../ftfont ../radiosity/extern/include ../../kernel/gen_system'
+incs += ' ../makesrna'
 
 incs += ' #/intern/guardedalloc #/intern/memutil #/intern/ghost #/intern/bmfont'
 incs += ' #/intern/elbeem #/extern/glew/include'
diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index b81184df049..cb2bc80dfd2 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -103,66 +103,6 @@ void		WM_operator_cancel		(struct bContext *C, ListBase *modalops, wmOperatorTyp
 int			WM_border_select_invoke	(struct bContext *C, wmOperator *op, struct wmEvent *event);
 int			WM_border_select_modal	(struct bContext *C, wmOperator *op, struct wmEvent *event);
 
-/* 
- * Operator property api
- *
- * Some notes to take care:
- *
- * All the OP_set_* functions append a new property to the operator,
- * if the property already exist, just replace it with the new
- * value in other case make a new property and append it.
- *
- * The OP_get_string function is a "special case", this function
- * return a pointer to property data, so don't change/resize/free
- * the string, because probably we get a segfault.
- * I really think that is better duplicate the string, so we are
- * really sure that the property data don't change.
- *
- * OP_get_int/float/array return 1 on success (found the property)
- * or 0 if can't find the property in the operator.
- * The property value are store in the "value" pointer.
- *
- * OP_verify_* sets the value only if it wasn't set already, and
- * returns the existing or new value.
- *
- * Both array function copy the property data into the "array"
- * pointer, but you need init the len pointer to the "array" size.
- *
- * For example:
- *	int vec[] = { 1, 2, 3, 4 };
- *	OP_set_int_array (op, "vector", vec, 4);
- *
- *	...
- *
- *	short len;
- *	int vec[4];
- *	len= 4; <---- set the size!!
- *	OP_get_int_array (op, "vector", vec, &len);
- */
-void	OP_set_int		(wmOperator *op, char *name, int value);
-void	OP_set_float	(wmOperator *op, char *name, float value);
-void	OP_set_string	(wmOperator *op, char *name, char *str);
-void	OP_set_int_array(wmOperator *op, char *name, int *array, short len);
-void	OP_set_float_array(wmOperator *op, char *name, float *array, short len);
-
-int		OP_get_int		(wmOperator *op, char *name, int *value);
-int		OP_get_float	(wmOperator *op, char *name, float *value);
-char	*OP_get_string	(wmOperator *op, char *name);
-int		OP_get_int_array(wmOperator *op, char *name, int *array, short *len);
-int		OP_get_float_array(wmOperator *op, char *name, float *array, short *len);
-
-void	OP_verify_int	(wmOperator *op, char *name, int value, int *result);
-void	OP_verify_float	(wmOperator *op, char *name, float value, int *result);
-char	*OP_verify_string(wmOperator *op, char *name, char *str);
-void	OP_verify_int_array(wmOperator *op, char *name, int *array, short len, int *resultarray, short *resultlen);
-void	OP_verify_float_array(wmOperator *op, char *name, float *array, short len, float *resultarray, short *resultlen);
-
-/*
- * Need call this function in the "exit callback"
- * of the operator, but only if you use the property system.
- **/
-void OP_free_property(wmOperator *op);
-
 			/* Gesture manager API */
 struct wmGesture *WM_gesture_new(struct bContext *C, struct wmEvent *event, int type);
 void		WM_gesture_end(struct bContext *C, struct wmGesture *gesture);
diff --git a/source/blender/windowmanager/intern/Makefile b/source/blender/windowmanager/intern/Makefile
index cbd0b3afa87..00412f00445 100644
--- a/source/blender/windowmanager/intern/Makefile
+++ b/source/blender/windowmanager/intern/Makefile
@@ -51,6 +51,7 @@ CPPFLAGS += -I$(NAN_SOUNDSYSTEM)/include $(NAN_SDLCFLAGS)
 CPPFLAGS += -I../../editors/include
 CPPFLAGS += -I../../python
 CPPFLAGS += -I../../makesdna
+CPPFLAGS += -I../../makesrna
 CPPFLAGS += -I../../blenlib
 CPPFLAGS += -I../../blenkernel
 CPPFLAGS += -I../../nodes
diff --git a/source/blender/windowmanager/intern/wm.c b/source/blender/windowmanager/intern/wm.c
index 165ca88ab71..8a18cb71893 100644
--- a/source/blender/windowmanager/intern/wm.c
+++ b/source/blender/windowmanager/intern/wm.c
@@ -53,7 +53,18 @@
 
 void wm_operator_free(wmOperator *op)
 {
-	OP_free_property(op);
+	if(op->properties) {
+		IDP_FreeProperty(op->properties);
+		
+		/* This need change, when the idprop code only
+		 * need call IDP_FreeProperty. (check BKE_idprop.h) */
+		MEM_freeN(op->properties);
+		op->properties= NULL;
+	}
+
+	if(op->rna)
+		MEM_freeN(op->rna);
+
 	MEM_freeN(op);
 }
 
@@ -62,6 +73,11 @@ void wm_operator_free(wmOperator *op)
 void wm_operator_register(wmWindowManager *wm, wmOperator *op)
 {
 	int tot;
+
+	if(op->rna) {
+		MEM_freeN(op->rna);
+		op->rna= NULL;
+	}
 	
 	BLI_addtail(&wm->operators, op);
 	tot= BLI_countlist(&wm->operators);
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index d2143fe5028..d0f812e31e6 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -46,6 +46,8 @@
 #include "ED_screen.h"
 #include "ED_area.h"
 
+#include "RNA_access.h"
+
 #include "WM_api.h"
 #include "WM_types.h"
 #include "wm.h"
@@ -290,6 +292,10 @@ int WM_operator_invoke(bContext *C, wmOperatorType *ot, wmEvent *event)
 
 		op->type= ot;
 
+		op->rna= MEM_callocN(sizeof(PointerRNA), "wmOperatorPtrRNA");
+		op->rna->type= op->type->rna;
+		op->rna->data= op;
+
 		if(op->type->invoke)
 			retval= (*op->type->invoke)(C, op, event);
 		else if(op->type->exec)
diff --git a/source/blender/windowmanager/intern/wm_init_exit.c b/source/blender/windowmanager/intern/wm_init_exit.c
index 422a655f53a..c196f7a4fff 100644
--- a/source/blender/windowmanager/intern/wm_init_exit.c
+++ b/source/blender/windowmanager/intern/wm_init_exit.c
@@ -70,6 +70,8 @@
 
 #include "UI_interface.h"
 
+#include "RNA_define.h"
+
 #include "WM_api.h"
 #include "WM_types.h"
 #include "wm.h"
@@ -237,6 +239,8 @@ void WM_exit(bContext *C)
 	UI_exit();
 	BLI_freelistN(&U.themes);
 // XXX	BIF_preview_free_dbase();
+
+	RNA_exit();
 	
 	MEM_freeN(C);
 	
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 5374592180e..b8c822592df 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -42,6 +42,9 @@
 #include "BKE_main.h"
 #include "BKE_idprop.h"
 
+#include "RNA_access.h"
+#include "RNA_define.h"
+
 #include "WM_api.h"
 #include "WM_types.h"
 
@@ -70,7 +73,9 @@ void WM_operatortype_append(void (*opfunc)(wmOperatorType*))
 	wmOperatorType *ot;
 	
 	ot= MEM_callocN(sizeof(wmOperatorType), "operatortype");
+	ot->rna= RNA_def_struct(&BLENDER_RNA, "", "Operator", "");
 	opfunc(ot);
+	RNA_def_struct_identifier(ot->rna, ot->idname, ot->name);
 	BLI_addtail(&global_ops, ot);
 }
 
@@ -144,10 +149,10 @@ static void border_select_apply(bContext *C, wmOperator *op)
 	rcti *rect= gesture->customdata;
 	
 	/* operator arguments and storage. */
-	OP_verify_int(op, "xmin", rect->xmin, NULL);
-	OP_verify_int(op, "ymin", rect->ymin, NULL);
-	OP_verify_int(op, "xmax", rect->xmax, NULL);
-	OP_verify_int(op, "ymax", rect->ymax, NULL);
+	RNA_int_default(op->rna, "xmin", rect->xmin);
+	RNA_int_default(op->rna, "ymin", rect->ymin);
+	RNA_int_default(op->rna, "xmax", rect->xmax);
+	RNA_int_default(op->rna, "ymax", rect->ymax);
 	
 	op->type->exec(C, op);
 }