Sindbad~EG File Manager

void norm_to_point(const RECT* r, double dx, double dy, POINT* p);
void create_title_windows(HWND hwnd);
void draw_xhairs(HDC,POINT);
void xor_tool(HWND hwnd, HDC hdc, graph* g);

typedef struct
{  BOOL down;
   int g;             /* the first graph containing start */
   POINT start;
   POINT last;
   POINT tool_last;   /* needed for saving crosshairs location when
                         moving title */
   HDC hdc;
   int current_graph;
   int ngraphs;  /* needed for Next/Previous to work right */
   BOOL move_title;
   int tool;  /* 0, BUTTON_HAND, BUTTON_RECT, BUTTON_XHAIR, or BUTTON_CENTERED_RECT */
   RECT graph_rect;
   RECT title_rect[MAXGRAPHS];
   HWND title_window[MAXGRAPHS];
   wbitmap wb;
   int update;        /* zero means process WM_PAINT by using wb */
                      /* 2 means definitely recompute the title size. */
   HPALETTE hCreatedPalette;
   HPALETTE hOldPalette;
   POINT ps;         /* point slope window upper left corner plus 1, if nonzero */
} Grfchild_State;


typedef struct
/* state of title window
*/
{  graph* graph;
   int xclient, yclient; // window size in pixels
   int xbbt, ybbt; // size of bblocked term in pixels
   int xscroll, yscroll; // scroll position
   int xinc, yinc; // scroll increments
   int xscrollbars, yscrollbars;  // whether scrollbars are needed
} Titlewin_State;

HWND CreatePointSlope(HWND hwnd, PGRAPHDATA pGraphData);
void DestroyGraphContextMenu(void);