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Rev 6456 Rev 6457
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  KOLIBRI_NUM_GUI_ELEMENTS
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  KOLIBRI_NUM_GUI_ELEMENTS
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};
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};
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/* Linked list which connects together all the elements drawn inside a GUI window */
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/* Linked list which connects together all the elements drawn inside a GUI window */
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struct kolibri_window_element {
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typedef struct{
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  enum KOLIBRI_GUI_ELEMENT_TYPE type;
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  enum KOLIBRI_GUI_ELEMENT_TYPE type;
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  void *element;
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  void *element;
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  struct kolibri_window_element *next, *prev;
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  void *next, *prev;
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};
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}kolibri_window_element;
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typedef void (*cb_elem_boxlib)(void *) __attribute__((__stdcall__));
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typedef void (*cb_elem_boxlib)(void *) __attribute__((__stdcall__));
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/* Generic structure for supporting functions on various elements of Kolibri's GUI */
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/* Generic structure for supporting functions on various elements of Kolibri's GUI */
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struct kolibri_element_operations {
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typedef struct {
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 	cb_elem_boxlib 	redraw_fn;
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 	cb_elem_boxlib 	redraw_fn;
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 	cb_elem_boxlib 	mouse_fn;
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 	cb_elem_boxlib 	mouse_fn;
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 	cb_elem_boxlib 	key_fn;
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 	cb_elem_boxlib 	key_fn;
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};
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}kolibri_element_operations;
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/* Structure for a GUI Window on Kolibri. It also contains all the elements drawn in window */
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/* Structure for a GUI Window on Kolibri. It also contains all the elements drawn in window */
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struct kolibri_window {
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typedef struct{
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  unsigned int topleftx, toplefty;
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  unsigned int topleftx, toplefty;
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  unsigned int sizex, sizey;
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  unsigned int sizex, sizey;
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  char *window_title;
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  char *window_title;
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  /* Refer to sysfuncs, value to be stored in EDX (Function 0) */
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  /* Refer to sysfuncs, value to be stored in EDX (Function 0) */
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  unsigned int XY;
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  unsigned int XY;
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  struct kolibri_window_element *elements;
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  kolibri_window_element *elements;
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};
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}kolibri_window;
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}
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}
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/* Create a new main GUI window for KolibriOS */
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/* Create a new main GUI window for KolibriOS */
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/* tl stands for TOP LEFT. x and y are coordinates. */
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/* tl stands for TOP LEFT. x and y are coordinates. */
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struct kolibri_window * kolibri_new_window(int tlx, int tly, int sizex, int sizey, char *title)
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kolibri_window * kolibri_new_window(int tlx, int tly, int sizex, int sizey, char *title)
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{
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{
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  struct kolibri_window *new_win = (struct kolibri_window *)malloc(sizeof(struct kolibri_window));
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  kolibri_window *new_win = (kolibri_window *)malloc(sizeof(kolibri_window));
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  new_win->topleftx = tlx;
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  new_win->topleftx = tlx;
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  return new_win;
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  return new_win;
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}
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}
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/* Add an element to an existing window */
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/* Add an element to an existing window */
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void kolibri_window_add_element(struct kolibri_window *some_window, enum KOLIBRI_GUI_ELEMENT_TYPE element_type, void *some_gui_element)
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void kolibri_window_add_element(kolibri_window *some_window, enum KOLIBRI_GUI_ELEMENT_TYPE element_type, void *some_gui_element)
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{
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{
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  struct kolibri_window_element *new_element = (struct kolibri_window_element *)malloc(sizeof(struct kolibri_window_element));
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  kolibri_window_element *new_element = (kolibri_window_element *)malloc(sizeof(kolibri_window_element));
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      some_window->elements -> prev = some_window->elements;
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      some_window->elements -> prev = some_window->elements;
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      some_window->elements -> next = some_window->elements;
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      some_window->elements -> next = some_window->elements;
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    }
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    }
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  else
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  else
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    {
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    {
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      struct kolibri_window_element *last_element = some_window -> elements -> prev;
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      kolibri_window_element *last_element = some_window -> elements -> prev;
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      last_element -> next = new_element;
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      last_element -> next = new_element;
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      new_element -> next = some_window -> elements; /* start of linked list  */
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      new_element -> next = some_window -> elements; /* start of linked list  */
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      some_window -> elements -> prev = new_element;
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      some_window -> elements -> prev = new_element;