The inkscape:bbox is defined as the global coordinate system. However, the center.x and center.y must be the coordiante system of the parent group of the SVG entity. Therefore, we need to do coordinate transformation from the global coordination system to the local coordination system.

#ifndef _APP_H
#define _APP_H
typedef struct {
	mb_animated_menu_t *m;
}MyAppData;

extern void MyApp_InitContent(mbaf_t *app,int argc, char *argv[]);

void myselect_callback(mb_animated_menu_t *m, int select);
#endif