Tao.Sdl SDK Documentation

Sdl.SDL_UpdateRects Method 

Makes sure the given list of rectangles is updated on the given screen.

[Visual Basic]
Public Shared Sub SDL_UpdateRects( _
   ByVal screen As IntPtr, _
   ByVal numrects As Integer, _
   ByVal rects As SDL_Rect() _
)
[C#]
public static void SDL_UpdateRects(
   IntPtr screen,
   int numrects,
   SDL_Rect[] rects
);

Parameters

screen
numrects
rects

Remarks

The rectangles must all be confined within the screen boundaries (no clipping is done).

This function should not be called while screen is locked.

Note: It is adviced to call this function only once per frame, since each call has some processing overhead. This is no restriction since you can pass any number of rectangles each time.

The rectangles are not automatically merged or checked for overlap. In general, the programmer can use his knowledge about his particular rectangles to merge them in an efficient way, to avoid overdraw.

Binds to C-function call in SDL_video.h:

extern DECLSPEC void SDLCALL SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects)

See Also

Sdl Class | Tao.Sdl Namespace | SDL_UpdateRect | SDL_Rect | SDL_Surface | SDL_LockSurface