Mercurial > sdl-ios-xcode
view include/SDL_syswm.h @ 615:7ec821f3cbd0
Date: Thu, 17 Apr 2003 23:27:34 -0400
From: Darrell Walisser
Subject: Yet another OS X cursor bug
The synopsis:
1. Call SDL_ShowCursor(0);
2. Call SDL_SetVideoMode();
3. Call SDL_GetEvent();
3. Call SDL_ShowCursor(1);
The result: Sometimes the cursor doesn't come back! Ack! Oddly enough,
it does come back when mousing over the dock or clicking in the menu
bar. But that's besides the point.
The reason why this is happening is a flaw in the handling of
activation/deactivation events. The short explanation is that the
HideCursor() and ShowCursor() calls must be balanced, but if the cursor
was initially hidden, HideCursor() was called again on the activate
event - so now the next ShowCursor() fails (as does the next, and the
next, for some reason).
So, here's the patch. All it does is keep track of the
HideCursor()/ShowCursor() calls so that they will always be balanced.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 20 Apr 2003 05:41:16 +0000 |
parents | 26dafefeebb2 |
children | 550bccdf04bd |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Include file for SDL custom system window manager hooks */ #ifndef _SDL_syswm_h #define _SDL_syswm_h #include "SDL_version.h" #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus extern "C" { #endif /* Your application has access to a special type of event 'SDL_SYSWMEVENT', which contains window-manager specific information and arrives whenever an unhandled window event occurs. This event is ignored by default, but you can enable it with SDL_EventState() */ #ifdef SDL_PROTOTYPES_ONLY struct SDL_SysWMinfo; typedef struct SDL_SysWMinfo SDL_SysWMinfo; #else /* This is the structure for custom window manager events */ #if (defined(unix) || defined(__unix__) || defined(_AIX) || defined(__OpenBSD__)) && \ (!defined(DISABLE_X11) && !defined(__CYGWIN32__) && !defined(ENABLE_NANOX)) /* AIX is unix, of course, but the native compiler CSet doesn't define unix */ #include <X11/Xlib.h> #include <X11/Xatom.h> /* These are the various supported subsystems under UNIX */ typedef enum { SDL_SYSWM_X11 } SDL_SYSWM_TYPE; /* The UNIX custom event structure */ struct SDL_SysWMmsg { SDL_version version; SDL_SYSWM_TYPE subsystem; union { XEvent xevent; } event; }; /* The UNIX custom window manager information structure. When this structure is returned, it holds information about which low level system it is using, and will be one of SDL_SYSWM_TYPE. */ typedef struct { SDL_version version; SDL_SYSWM_TYPE subsystem; union { struct { Display *display; /* The X11 display */ Window window; /* The X11 display window */ /* These locking functions should be called around any X11 functions using the display variable. They lock the event thread, so should not be called around event functions or from event filters. */ void (*lock_func)(void); void (*unlock_func)(void); /* Introduced in SDL 1.0.2 */ Window fswindow; /* The X11 fullscreen window */ Window wmwindow; /* The X11 managed input window */ } x11; } info; } SDL_SysWMinfo; #elif defined(ENABLE_NANOX) #include <microwin/nano-X.h> /* The generic custom event structure */ struct SDL_SysWMmsg { SDL_version version; int data; }; /* The windows custom window manager information structure */ typedef struct { SDL_version version ; GR_WINDOW_ID window ; /* The display window */ } SDL_SysWMinfo; #elif defined(WIN32) #define WIN32_LEAN_AND_MEAN #include <windows.h> /* The windows custom event structure */ struct SDL_SysWMmsg { SDL_version version; HWND hwnd; /* The window for the message */ UINT msg; /* The type of message */ WPARAM wParam; /* WORD message parameter */ LPARAM lParam; /* LONG message parameter */ }; /* The windows custom window manager information structure */ typedef struct { SDL_version version; HWND window; /* The Win32 display window */ HGLRC hglrc; /* The OpenGL context, if any */ } SDL_SysWMinfo; #else /* The generic custom event structure */ struct SDL_SysWMmsg { SDL_version version; int data; }; /* The generic custom window manager information structure */ typedef struct { SDL_version version; int data; } SDL_SysWMinfo; #endif /* OS type */ #endif /* SDL_PROTOTYPES_ONLY */ /* Function prototypes */ /* * This function gives you custom hooks into the window manager information. * It fills the structure pointed to by 'info' with custom information and * returns 1 if the function is implemented. If it's not implemented, or * the version member of the 'info' structure is invalid, it returns 0. */ extern DECLSPEC int SDLCALL SDL_GetWMInfo(SDL_SysWMinfo *info); /* Ends C function definitions when using C++ */ #ifdef __cplusplus } #endif #include "close_code.h" #endif /* _SDL_syswm_h */