- void addImageButton(int id,int texture,MBCallback cb,int x,int y,int w,int h);
- void addImageButton(int id,int texture,MBCallback cb,int x,int y,int w,int h,float r,float g,float b);
- void addMapLine(const XYZ& start, const XYZ& end, float startsize, float endsize, float r,float g,float b);
+ void addImageButton(int id,int texture,MBCallback cb,int x,int y,int w,int h,float r=1,float g=1,float b=1);
+ void addMapLine(int x, int y, int w, int h, float startsize, float endsize, float r,float g,float b);