(svn r13674) -Fix [FS#2127]: crash when drawing a non-real sprite. The drawing of the non-real sprite is caused when two NewGRFs replace the same sprite and the first replaces it with a real sprite (and thus assumes it remains a real sprite) and the second replaces it with a non-real sprite. OpenTTD already looked at whether the sprite to load should be seen as a real or non-real sprite, but it failed to replace non-real sprites with a substitute real sprite when getting the sprite from the cache.
/* $Id$ */
/** @file window_func.h Window functions not directly related to making/drawing windows. */
#ifndef WINDOW_FUNC_H
#define WINDOW_FUNC_H
#include "window_type.h"
#include "player_type.h"
void SetWindowDirty(const Window *w);
Window *FindWindowById(WindowClass cls, WindowNumber number);
void ChangeWindowOwner(PlayerID old_player, PlayerID new_player);
void ResizeWindow(Window *w, int x, int y);
int PositionMainToolbar(Window *w);
void InitWindowSystem();
void UnInitWindowSystem();
void ResetWindowSystem();
void SetupColorsAndInitialWindow();
void InputLoop();
void InvalidateThisWindowData(Window *w, int data = 0);
void InvalidateWindowData(WindowClass cls, WindowNumber number, int data = 0);
void InvalidateWindowClassesData(WindowClass cls, int data = 0);
void DeleteNonVitalWindows();
void DeleteAllNonVitalWindows();
void HideVitalWindows();
void ShowVitalWindows();
void InvalidateWindowWidget(WindowClass cls, WindowNumber number, byte widget_index);
void InvalidateWindow(WindowClass cls, WindowNumber number);
void InvalidateWindowClasses(WindowClass cls);
void DeleteWindowById(WindowClass cls, WindowNumber number);
void DeleteWindowByClass(WindowClass cls);
#endif /* WINDOW_FUNC_H */