390 lines
5.8 KiB
HTML
390 lines
5.8 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>SDL_CreateCursor</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.64
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"><LINK
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REL="HOME"
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TITLE="SDL Library Documentation"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Video"
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HREF="video.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_WarpMouse"
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HREF="sdlwarpmouse.html"><LINK
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REL="NEXT"
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TITLE="SDL_FreeCursor"
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HREF="sdlfreecursor.html"></HEAD
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><BODY
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CLASS="REFENTRY"
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BGCOLOR="#FFF8DC"
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TEXT="#000000"
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LINK="#0000ee"
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VLINK="#551a8b"
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ALINK="#ff0000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>SDL Library Documentation</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sdlwarpmouse.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="sdlfreecursor.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="SDLCREATECURSOR"
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>SDL_CreateCursor</A
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></H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN2068"
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></A
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><H2
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>Name</H2
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>SDL_CreateCursor -- Creates a new mouse cursor.</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN2071"
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></A
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><H2
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>Synopsis</H2
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><DIV
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CLASS="FUNCSYNOPSIS"
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><A
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NAME="AEN2072"
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></A
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><P
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></P
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><PRE
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CLASS="FUNCSYNOPSISINFO"
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>#include "SDL.h"</PRE
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><P
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><CODE
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><CODE
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CLASS="FUNCDEF"
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>SDL_Cursor *<B
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CLASS="FSFUNC"
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>SDL_CreateCursor</B
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></CODE
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>(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);</CODE
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></P
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><P
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></P
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></DIV
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2078"
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></A
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><H2
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>Description</H2
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><P
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>Create a cursor using the specified <TT
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CLASS="PARAMETER"
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><I
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>data</I
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></TT
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> and <TT
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CLASS="PARAMETER"
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><I
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>mask</I
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></TT
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> (in MSB format).
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The cursor width must be a multiple of 8 bits.</P
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><P
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>The cursor is created in black and white according to the following:
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<DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN2084"
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></A
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><P
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></P
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><TABLE
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BORDER="1"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>Data / Mask</TH
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>Resulting pixel on screen</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>0 / 1</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>White</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>1 / 1</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Black</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>0 / 0</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Transparent</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>1 / 0</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Inverted color if possible, black if not.</TD
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></TR
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></TBODY
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></TABLE
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><P
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></P
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></DIV
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></P
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><P
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>Cursors created with this function must be freed with
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<A
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HREF="sdlfreecursor.html"
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>SDL_FreeCursor</A
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>.</P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2105"
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></A
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><H2
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>Example</H2
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><PRE
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CLASS="PROGRAMLISTING"
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>/* Stolen from the mailing list */
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/* Creates a new mouse cursor from an XPM */
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/* XPM */
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static const char *arrow[] = {
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/* width height num_colors chars_per_pixel */
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" 32 32 3 1",
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/* colors */
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"X c #000000",
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". c #ffffff",
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" c None",
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/* pixels */
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"X ",
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"XX ",
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"X.X ",
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"X..X ",
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"X...X ",
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"X....X ",
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"X.....X ",
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"X......X ",
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"X.......X ",
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"X........X ",
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"X.....XXXXX ",
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"X..X..X ",
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"X.X X..X ",
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"XX X..X ",
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"X X..X ",
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" X..X ",
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" X..X ",
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" X..X ",
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" XX ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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"0,0"
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};
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static SDL_Cursor *init_system_cursor(const char *image[])
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{
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int i, row, col;
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Uint8 data[4*32];
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Uint8 mask[4*32];
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int hot_x, hot_y;
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i = -1;
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for ( row=0; row<32; ++row ) {
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for ( col=0; col<32; ++col ) {
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if ( col % 8 ) {
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data[i] <<= 1;
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mask[i] <<= 1;
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} else {
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++i;
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data[i] = mask[i] = 0;
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}
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switch (image[4+row][col]) {
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case 'X':
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data[i] |= 0x01;
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k[i] |= 0x01;
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break;
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case '.':
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mask[i] |= 0x01;
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break;
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case ' ':
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break;
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}
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}
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}
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sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
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return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
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}</PRE
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2108"
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></A
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><H2
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>See Also</H2
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><P
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><A
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HREF="sdlfreecursor.html"
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><TT
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CLASS="FUNCTION"
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>SDL_FreeCursor</TT
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></A
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>,
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<A
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HREF="sdlsetcursor.html"
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><TT
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CLASS="FUNCTION"
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>SDL_SetCursor</TT
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></A
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>,
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<A
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HREF="sdlshowcursor.html"
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><TT
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CLASS="FUNCTION"
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>SDL_ShowCursor</TT
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></A
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></P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
|
|
><A
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HREF="sdlwarpmouse.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
|
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="sdlfreecursor.html"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
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VALIGN="top"
|
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>SDL_WarpMouse</TD
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><TD
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WIDTH="34%"
|
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ALIGN="center"
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VALIGN="top"
|
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><A
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HREF="video.html"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
|
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>SDL_FreeCursor</TD
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></TR
|
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></TABLE
|
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></DIV
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></BODY
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></HTML
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> |