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view docs/html/sdlglattr.html @ 816:428f688f2ad2
Date: Fri, 13 Feb 2004 17:03:16 +0100
From: Max Horn
Subject: Modifier key fix
The internal modifier state can get out of sync with reality. To
trigger this, do for example this:
1) Launch an SDL app
2) Alt-click on the desktop (this will hide the SDL app).
3) Bring the SDL app back to the front
4) SDL will still think alt is pressed (and as such will treat left
clicks like middle clicks). If you press and release alt, it'll be fine
again.
The attached patch cures this by rechecking the modifier state whenever
we process an event.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 13 Feb 2004 17:57:16 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_GLattr</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Video" HREF="video.html"><LINK REL="PREVIOUS" TITLE="SDL_FreeYUVOverlay" HREF="sdlfreeyuvoverlay.html"><LINK REL="NEXT" TITLE="SDL_Rect" HREF="sdlrect.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlfreeyuvoverlay.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlrect.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLGLATTR" ></A >SDL_GLattr</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2971" ></A ><H2 >Name</H2 >SDL_GLattr -- SDL GL Attributes</DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2974" ></A ><H2 >Attributes</H2 ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN2976" ></A ><P ></P ><TABLE BORDER="0" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_RED_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the framebuffer red component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_GREEN_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the framebuffer green component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_BLUE_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the framebuffer blue component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_ALPHA_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the framebuffer alpha component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_DOUBLEBUFFER</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >0 or 1, enable or disable double buffering</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_BUFFER_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the framebuffer, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_DEPTH_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the depth buffer, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_STENCIL_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the stencil buffer, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_ACCUM_RED_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the accumulation buffer red component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_ACCUM_GREEN_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the accumulation buffer green component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_ACCUM_BLUE_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the accumulation buffer blue component, in bits</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_GL_ACCUM_ALPHA_SIZE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Size of the accumulation buffer alpha component, in bits</TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3027" ></A ><H2 >Description</H2 ><P >While you can set most OpenGL attributes normally, the attributes list above must be known <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >before</I ></SPAN > SDL sets the video mode. These attributes a set and read with <A HREF="sdlglsetattribute.html" ><TT CLASS="FUNCTION" >SDL_GL_SetAttribute</TT ></A > and <A HREF="sdlglgetattribute.html" ><TT CLASS="FUNCTION" >SDL_GL_GetAttribute</TT ></A >.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3035" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlglsetattribute.html" ><TT CLASS="FUNCTION" >SDL_GL_SetAttribute</TT ></A >, <A HREF="sdlglgetattribute.html" ><TT CLASS="FUNCTION" >SDL_GL_GetAttribute</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlfreeyuvoverlay.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlrect.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_FreeYUVOverlay</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="video.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_Rect</TD ></TR ></TABLE ></DIV ></BODY ></HTML >