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annotate docs/man3/SDL_UpdateRects.3 @ 3896:1a327643e741 SDL-1.2

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X11 backend: tell app that mouse focus has been obtained when grabbing the input. This allows us to enable DGA mode, even when the system cursor was outside of the window when the grab was initiated. Fixes Bugzilla #299, which has a more detailed explanation of the issue.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 13 Nov 2006 03:58:22 +0000
parents e5bc29de3f0a
children 546f7c1eb755
rev   line source
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e5bc29de3f0a Updated from the SDL Documentation Project
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1 .TH "SDL_UpdateRects" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_UpdateRects\- Makes sure the given list of rectangles is updated on the given screen\&.
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4 .SH "SYNOPSIS"
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5 .PP
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6 \fB#include "SDL\&.h"
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7 .sp
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8 \fBvoid \fBSDL_UpdateRects\fP\fR(\fBSDL_Surface *screen, int numrects, SDL_Rect *rects\fR);
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9 .SH "DESCRIPTION"
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10 .PP
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11 Makes sure the given list of rectangles is updated on the given screen\&. The rectangles must all be confined within the screen boundaries (no clipping is done)\&.
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12 .PP
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13 This function should not be called while \fBscreen\fR is \fIlocked\fR\&.
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14 .PP
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15 .RS
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16 \fBNote:
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17 .PP
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18 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\&.
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19 .PP
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20 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\&.
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21 .RE
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22 .SH "SEE ALSO"
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23 .PP
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24 \fI\fBSDL_UpdateRect\fP\fR, \fI\fBSDL_Rect\fR\fR, \fI\fBSDL_Surface\fR\fR, \fI\fBSDL_LockSurface\fP\fR
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25 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01