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Bug 1273 - SDL_Init is crashing when called from DLL_main
Summary: SDL_Init is crashing when called from DLL_main
Status: RESOLVED WONTFIX
Alias: None
Product: SDL
Classification: Unclassified
Component: joystick (show other bugs)
Version: 1.2.14
Hardware: x86 Windows (XP)
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-08-12 05:14 UTC by fojtik
Modified: 2011-12-30 02:08 UTC (History)
0 users

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Description fojtik 2011-08-12 05:14:05 UTC 
The code hangs. If I call SDL_Init(SDL_INIT_JOYSTICK) outdide DllMain, It does not crash.

----------------------------------------------------------

SDL_Joystick *joystick;
int JoystickNumAxes;

/** Main Windows .dll initialisation entry point. */
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
  switch(fdwReason)
  {
    case DLL_PROCESS_ATTACH:
		{
	        if(SDL_Init(SDL_INIT_JOYSTICK)==0)
	        {
	          joystick = SDL_JoystickOpen(0);
		  JoystickNumAxes = SDL_JoystickNumAxes(joystick);
		}
		else
		  joystick = NULL;
		break;
		}
    case DLL_PROCESS_DETACH:		
	        if (joystick) 
                {
		   SDL_JoystickClose(joystick);	
		   joystick = NULL;
		}  //numAxes = numButtons = numHats = numTrackballs = 0;		
		break;
	
    //case DLL_THREAD_ATTACH:
    //case DLL_THREAD_DETACH:
  }
  return TRUE;
}
Comment 1 Sam Lantinga 2011-12-29 01:46:01 UTC 
I suspect there's some problems on Windows with loading DLLs while a DLL is being loaded.
Comment 2 fojtik 2011-12-30 02:08:41 UTC 
I have finally used native Windows joystick calls and do not use this library.

There is no other place to initialise joystick, only dll_main is available. 

The resulting DLL is intended to be a plugin for Matlab.