Mercurial > sdl-ios-xcode
annotate docs/html/sdlwarpmouse.html @ 1012:f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
From: Jonathan Atkins
Subject: [SDL] SDL_SaveBMP width bugfix
this fixes the pitch versus width difference that can happen
(especially for 8bit and 24bit (with the exact RGBAmasks) surfaces)
when you use SDL_SaveBMP. The problem was the pitch was used
instead of the width, which in some cases is much wider than the
screen area you really want to save...making for ugly crud on the
saved image borders.
This code has been tested with & without pitch overhangs...and
with the right masks for 24 bit surfaces.
I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 14 Dec 2004 06:20:49 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_WarpMouse</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_DisplayFormatAlpha" | |
17 HREF="sdldisplayformatalpha.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CreateCursor" | |
20 HREF="sdlcreatecursor.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdldisplayformatalpha.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlcreatecursor.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLWARPMOUSE" | |
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74 ></A |
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75 >SDL_WarpMouse</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2465" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_WarpMouse -- Set the position of the mouse cursor.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2468" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2469" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_WarpMouse</B | |
108 ></CODE | |
109 >(Uint16 x, Uint16 y);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2475" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Set the position of the mouse cursor (generates a mouse motion event).</P | |
124 ></DIV | |
125 ><DIV | |
126 CLASS="REFSECT1" | |
127 ><A | |
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128 NAME="AEN2478" |
0 | 129 ></A |
130 ><H2 | |
131 >See Also</H2 | |
132 ><P | |
133 ><A | |
134 HREF="sdlmousemotionevent.html" | |
135 ><SPAN | |
136 CLASS="STRUCTNAME" | |
137 >SDL_MouseMotionEvent</SPAN | |
138 ></A | |
139 ></P | |
140 ></DIV | |
141 ><DIV | |
142 CLASS="NAVFOOTER" | |
143 ><HR | |
144 ALIGN="LEFT" | |
145 WIDTH="100%"><TABLE | |
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146 SUMMARY="Footer navigation table" |
0 | 147 WIDTH="100%" |
148 BORDER="0" | |
149 CELLPADDING="0" | |
150 CELLSPACING="0" | |
151 ><TR | |
152 ><TD | |
153 WIDTH="33%" | |
154 ALIGN="left" | |
155 VALIGN="top" | |
156 ><A | |
157 HREF="sdldisplayformatalpha.html" | |
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158 ACCESSKEY="P" |
0 | 159 >Prev</A |
160 ></TD | |
161 ><TD | |
162 WIDTH="34%" | |
163 ALIGN="center" | |
164 VALIGN="top" | |
165 ><A | |
166 HREF="index.html" | |
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167 ACCESSKEY="H" |
0 | 168 >Home</A |
169 ></TD | |
170 ><TD | |
171 WIDTH="33%" | |
172 ALIGN="right" | |
173 VALIGN="top" | |
174 ><A | |
175 HREF="sdlcreatecursor.html" | |
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176 ACCESSKEY="N" |
0 | 177 >Next</A |
178 ></TD | |
179 ></TR | |
180 ><TR | |
181 ><TD | |
182 WIDTH="33%" | |
183 ALIGN="left" | |
184 VALIGN="top" | |
185 >SDL_DisplayFormatAlpha</TD | |
186 ><TD | |
187 WIDTH="34%" | |
188 ALIGN="center" | |
189 VALIGN="top" | |
190 ><A | |
191 HREF="video.html" | |
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192 ACCESSKEY="U" |
0 | 193 >Up</A |
194 ></TD | |
195 ><TD | |
196 WIDTH="33%" | |
197 ALIGN="right" | |
198 VALIGN="top" | |
199 >SDL_CreateCursor</TD | |
200 ></TR | |
201 ></TABLE | |
202 ></DIV | |
203 ></BODY | |
204 ></HTML | |
205 > |