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Fixed bug #901 Tim Angus 2009-12-11 11:45:46 PST Disable mouse event generation when state is not SDL_APPMOUSEFOCUS If a Windows SDL application is minimised by using alt-tab, SDL_APPMOUSEFOCUS is lost as part of the minimisation. Unfortunately, the directx driver doesn't pay any attention to this state when generating mouse button events, so clicking on the Desktop can cause mouse clicks in the SDL application, while it's still minimised. The attached patch fixes this. It looks much more complicated than it actually is due to indentation; here it is ignoring whitespace: tma@abraxas:~/sources/SDL-1.2-svn$ svn diff -x -b Index: src/video/windx5/SDL_dx5events.c =================================================================== --- src/video/windx5/SDL_dx5events.c (revision 5376) +++ src/video/windx5/SDL_dx5events.c (working copy) @@ -374,10 +374,9 @@ if ( !(SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) { mouse_lost = 1; ClipCursor(NULL); - } - + } else { /* If the mouse was lost, regain some sense of mouse state */ - if ( mouse_lost && (SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) { + if ( mouse_lost ) { POINT mouse_pos; Uint8 old_state; Uint8 new_state; @@ -548,6 +547,7 @@ if ( xrel || yrel ) { post_mouse_motion(1, xrel, yrel); } + } } /* The main Win32 event handler */
author Sam Lantinga <slouken@libsdl.org>
date Mon, 14 Dec 2009 22:41:31 +0000
parents 355632dca928
children
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<HTML
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>SDL_ActiveEvent</TITLE
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><H1
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>SDL_ActiveEvent</H1
><DIV
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><A
NAME="AEN3955"
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><H2
>Name</H2
>SDL_ActiveEvent&nbsp;--&nbsp;Application visibility event structure</DIV
><DIV
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><A
NAME="AEN3958"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type;
  Uint8 gain;
  Uint8 state;
} SDL_ActiveEvent;</PRE
></DIV
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><H2
>Structure Data</H2
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><TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
></TD
><TD
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><TT
CLASS="LITERAL"
>SDL_ACTIVEEVENT.</TT
></TD
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><TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
></TD
><TD
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>0 if the event is a loss or 1 if it is a gain.</TD
></TR
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><TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
></TD
><TD
ALIGN="LEFT"
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><TT
CLASS="LITERAL"
>SDL_APPMOUSEFOCUS</TT
> if mouse focus was gained or lost, <TT
CLASS="LITERAL"
>SDL_APPINPUTFOCUS</TT
> if input focus was gained or lost, or <TT
CLASS="LITERAL"
>SDL_APPACTIVE</TT
> if the application was iconified (<TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
>=0) or restored(<TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
>=1).</TD
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><H2
>Description</H2
><P
><SPAN
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>SDL_ActiveEvent</SPAN
> is a member of the <A
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><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
> union and is used when an event of type <TT
CLASS="LITERAL"
>SDL_ACTIVEEVENT</TT
> is reported.</P
><P
>When the mouse leaves or enters the window area a <TT
CLASS="LITERAL"
>SDL_APPMOUSEFOCUS</TT
> type activation event occurs, if the mouse entered the window then <TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
> will be 1, otherwise <TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
> will be 0. A <TT
CLASS="LITERAL"
>SDL_APPINPUTFOCUS</TT
> type activation event occurs when the application loses or gains keyboard focus. This usually occurs when another application is made active. Finally, a <TT
CLASS="LITERAL"
>SDL_APPACTIVE</TT
> type event occurs when the application is either minimised/iconified (<TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
>=0) or restored.</P
><DIV
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><BLOCKQUOTE
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><P
><B
>Note: </B
>This event does not occur when an application window is first created.</P
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>See Also</H2
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>SDL_Event</SPAN
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>,
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>SDL_GetAppState</TT
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