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ggiGetRayPos
Langue: en
Version: 281810 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
ggiGetRayPos - Find out where the raster beam isSYNOPSIS
#include <ggi/misc.h> int ggiGetRayPos(ggi_visual_t vis, int32_t* x, int32_t* y);
DESCRIPTION
Though currently only implemented via matroxfb, this function will retrieve the current position of the raster beam on a display that uses a cathode ray tube, or resembles such internally. Because it has not been implemented and put into widespread use, there may be API fluctuation as to exactly what units x, y are in, especially on displays using doublescanning modes. In addition to numerical values, the following values can be returned in either dimension: GGI_RP_BORDER means the raster is in the border of the screen; GGI_RP_BLANK means the raster is past the border and is turned off; GGI_RP_SYNC means the raster is retracing to the top of the screen.RETURN VALUE
0 for OK, otherwise an ggi-error(3) code.SEE ALSO
ggiWaitRayPos(3)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre