Bug with SDL 1.1.6 on Win32

SDL Development
1

Hello,

Using SDL ver 1.1.6 on Win2k in Fullscreen with OpenGL,
all mouse click produces twice each event, like
2 x SDL_MOUSEBUTTONDOWN
2 x SDL_MOUSEBUTTONUP
The strange thing is that it only appear in fullscreen.
I don’t know if it is GL dependent

Has anyone any idea ??

Thanks

Stephane

2

I looked into this a while ago but I had forgotten it still existed. It
is indeed a bug, but I don’t have a solution. Here’s the results of my
research:—
I’ve noticed that there seems to be a bug where mouse button events are
duplicated
in fullscreen OpenGL mode. This seems to be because the
DIRECTX_FULLSCREEN macro
is giving the wrong value when testing it in the Windows message handler
in SDL_sysevents.c.

#define DIRECTX_FULLSCREEN()
(

((SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) &&
((SDL_VideoSurface->flags & SDL_OPENGL) != SDL_OPENGL) &&
(strcmp(this->name, “directx”) == 0)
)

In OpenGL fullscreen mode, both the SDL_FULLSCREEN and SDL_OPENGL flags
are set -
even though the system is still using DirectInput - so this returns
false. Perhaps
a DIRECTX_DIRECTINPUT macro could be defined as:

#define DIRECTX_DIRECTINPUT()
(

((SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) &&
(strcmp(this->name, “directx”) == 0)
)

Stephane Magnenat wrote:

Hello,

Using SDL ver 1.1.6 on Win2k in Fullscreen with OpenGL,

all mouse click produces twice each event, like

2 x SDL_MOUSEBUTTONDOWN

2 x SDL_MOUSEBUTTONUP

The strange thing is that it only appear in fullscreen.

I don’t know if it is GL dependent

Has anyone any idea ??

Thanks

Stephane

3

Ok, I’m happy it’s not my application who is buggy :slight_smile:
Can someone fix this ???

Thanks a lot

Stephane> I looked into this a while ago but I had forgotten it still existed. It

is indeed a bug, but I don’t have a solution. Here’s the results of my
research:

I’ve noticed that there seems to be a bug where mouse button events are
duplicated
in fullscreen OpenGL mode. This seems to be because the
DIRECTX_FULLSCREEN macro
is giving the wrong value when testing it in the Windows message handler
in SDL_sysevents.c.

#define DIRECTX_FULLSCREEN()
(

((SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) &&
((SDL_VideoSurface->flags & SDL_OPENGL) != SDL_OPENGL) &&
(strcmp(this->name, “directx”) == 0)
)

In OpenGL fullscreen mode, both the SDL_FULLSCREEN and SDL_OPENGL flags
are set -
even though the system is still using DirectInput - so this returns
false. Perhaps
a DIRECTX_DIRECTINPUT macro could be defined as:

#define DIRECTX_DIRECTINPUT()
(

((SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) &&
(strcmp(this->name, “directx”) == 0)
)

Stephane Magnenat wrote:

Hello,

Using SDL ver 1.1.6 on Win2k in Fullscreen with OpenGL,

all mouse click produces twice each event, like

2 x SDL_MOUSEBUTTONDOWN

2 x SDL_MOUSEBUTTONUP

The strange thing is that it only appear in fullscreen.

I don’t know if it is GL dependent

Has anyone any idea ??

Thanks

Stephane