on mac shift,option,command,ctrl all return symbols for left hand key

[GoogleCodeExporter]

A user of my software wants to discriminate between left and right command,
shift... keys. Pyglet claims to do so, but actually the symbols returned
from the key events always correspond to the left hand key (key.LOPTION,
key.LCTRL...). It doesn't seem to be a hardware problem (pygame is
correctly discriminating).

The following code demonstrates the problem under;
 Mac OS X (10.5.5)
 Intel iMac
 aluminium (wired) keyboard

#----------------
import pyglet
from pyglet.window import key

window = pyglet.window.Window()

@window.event
def on_key_press(symbol, modifiers):
    print symbol, key.symbol_string(symbol) 

pyglet.app.run()
#----------------

Python
------------------------------------------------------------------------------
sys.version: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) 
[GCC 4.0.1 (Apple Computer, Inc. build 5363)]
sys.platform: darwin
os.getcwd(): /Users/jwp

pyglet
------------------------------------------------------------------------------
pyglet.version: 1.1.2
pyglet.__file__:
/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/py
glet/__init__.pyc
pyglet.options['debug_trace_depth'] = 1
pyglet.options['audio'] = ('directsound', 'openal', 'alsa', 'silent')
pyglet.options['xsync'] = True
pyglet.options['debug_trace_flush'] = True
pyglet.options['debug_win32'] = False
pyglet.options['debug_gl_trace'] = False
pyglet.options['debug_x11'] = False
pyglet.options['shadow_window'] = True
pyglet.options['debug_font'] = False
pyglet.options['debug_media'] = False
pyglet.options['debug_trace'] = False
pyglet.options['debug_lib'] = False
pyglet.options['graphics_vbo'] = True
pyglet.options['vsync'] = None
pyglet.options['debug_trace_args'] = False
pyglet.options['debug_gl'] = True
pyglet.options['debug_graphics_batch'] = False
pyglet.options['font'] = ('gdiplus', 'win32')
pyglet.options['debug_texture'] = False
pyglet.options['debug_gl_trace_args'] = False

pyglet.window
------------------------------------------------------------------------------
platform: <pyglet.window.carbon.CarbonPlatform object at 0xcf29d0>
display: <pyglet.window.carbon.CarbonDisplay object at 0xcf29b0>
screens[0]: CarbonScreen(x=0, y=0, width=1680, height=1050)
screens[1]: CarbonScreen(x=1680, y=0, width=1400, height=1050)
config['double_buffer'] = 1
config['stereo'] = 0
config['buffer_size'] = 32
config['aux_buffers'] = 0
config['sample_buffers'] = 0
config['samples'] = 0
config['red_size'] = 8
config['green_size'] = 8
config['blue_size'] = 8
config['alpha_size'] = 8
config['depth_size'] = 32
config['stencil_size'] = 0
config['accum_red_size'] = 0
config['accum_green_size'] = 0
config['accum_blue_size'] = 0
config['accum_alpha_size'] = 0
context: CarbonGLContext()

pyglet.gl.gl_info
------------------------------------------------------------------------------
gl_info.get_version(): 2.0 ATI-1.5.30
gl_info.get_vendor(): ATI Technologies Inc.
gl_info.get_renderer(): ATI Radeon HD 2400 OpenGL Engine
gl_info.get_extensions():
   GL_APPLE_aux_depth_stencil
   GL_APPLE_client_storage
   GL_APPLE_element_array
   GL_APPLE_fence
   GL_APPLE_float_pixels
   GL_APPLE_flush_buffer_range
   GL_APPLE_flush_render
   GL_APPLE_object_purgeable
   GL_APPLE_packed_pixels
   GL_APPLE_pixel_buffer
   GL_APPLE_specular_vector
   GL_APPLE_texture_range
   GL_APPLE_transform_hint
   GL_APPLE_vertex_array_object
   GL_APPLE_vertex_array_range
   GL_APPLE_vertex_program_evaluators
   GL_APPLE_ycbcr_422
   GL_ARB_depth_texture
   GL_ARB_draw_buffers
   GL_ARB_fragment_program
   GL_ARB_fragment_program_shadow
   GL_ARB_fragment_shader
   GL_ARB_half_float_pixel
   GL_ARB_imaging
   GL_ARB_multisample
   GL_ARB_multitexture
   GL_ARB_occlusion_query
   GL_ARB_pixel_buffer_object
   GL_ARB_point_parameters
   GL_ARB_point_sprite
   GL_ARB_shader_objects
   GL_ARB_shader_texture_lod
   GL_ARB_shading_language_100
   GL_ARB_shadow
   GL_ARB_shadow_ambient
   GL_ARB_texture_border_clamp
   GL_ARB_texture_compression
   GL_ARB_texture_cube_map
   GL_ARB_texture_env_add
   GL_ARB_texture_env_combine
   GL_ARB_texture_env_crossbar
   GL_ARB_texture_env_dot3
   GL_ARB_texture_float
   GL_ARB_texture_mirrored_repeat
   GL_ARB_texture_non_power_of_two
   GL_ARB_texture_rectangle
   GL_ARB_transpose_matrix
   GL_ARB_vertex_blend
   GL_ARB_vertex_buffer_object
   GL_ARB_vertex_program
   GL_ARB_vertex_shader
   GL_ARB_window_pos
   GL_ATI_blend_equation_separate
   GL_ATI_blend_weighted_minmax
   GL_ATI_separate_stencil
   GL_ATI_texture_compression_3dc
   GL_ATI_texture_env_combine3
   GL_ATI_texture_float
   GL_ATI_texture_mirror_once
   GL_EXT_abgr
   GL_EXT_bgra
   GL_EXT_blend_color
   GL_EXT_blend_equation_separate
   GL_EXT_blend_func_separate
   GL_EXT_blend_minmax
   GL_EXT_blend_subtract
   GL_EXT_clip_volume_hint
   GL_EXT_compiled_vertex_array
   GL_EXT_draw_buffers2
   GL_EXT_draw_range_elements
   GL_EXT_fog_coord
   GL_EXT_framebuffer_blit
   GL_EXT_framebuffer_multisample
   GL_EXT_framebuffer_object
   GL_EXT_geometry_shader4
   GL_EXT_gpu_program_parameters
   GL_EXT_multi_draw_arrays
   GL_EXT_packed_depth_stencil
   GL_EXT_rescale_normal
   GL_EXT_secondary_color
   GL_EXT_separate_specular_color
   GL_EXT_shadow_funcs
   GL_EXT_stencil_two_side
   GL_EXT_stencil_wrap
   GL_EXT_texture_compression_dxt1
   GL_EXT_texture_compression_s3tc
   GL_EXT_texture_env_add
   GL_EXT_texture_filter_anisotropic
   GL_EXT_texture_lod_bias
   GL_EXT_texture_mirror_clamp
   GL_EXT_texture_rectangle
   GL_EXT_texture_sRGB
   GL_EXT_transform_feedback
   GL_IBM_rasterpos_clip
   GL_NV_blend_square
   GL_NV_fog_distance
   GL_NV_light_max_exponent
   GL_NV_texgen_reflection
   GL_SGIS_generate_mipmap
   GL_SGIS_texture_edge_clamp
   GL_SGIS_texture_lod
   GL_SGI_color_matrix

pyglet.gl.glu_info
------------------------------------------------------------------------------
glu_info.get_version(): 1.3 MacOSX
glu_info.get_extensions():

pyglet.gl.glx_info
------------------------------------------------------------------------------
GLX not available.

pyglet.media
------------------------------------------------------------------------------
driver: pyglet.media.drivers.openal

pyglet.media.avbin
------------------------------------------------------------------------------
Library: <CDLL '/usr/local/lib/libavbin.dylib', handle da2dda0 at de34c90>
AVbin version: 5
FFmpeg revision: 13661

pyglet.media.drivers.openal
------------------------------------------------------------------------------
Library: <CDLL '/System/Library/Frameworks/OpenAL.framework/OpenAL', handle
8f7690 at dc8970>
Version: (1, 1)
Extensions:
   ALC_EXT_CAPTURE
   ALC_ENUMERATION_EXT
   ALC_EXT_MAC_OSX
   ALC_EXT_ASA
   ALC_EXT_ASA_DISTORTION
   ALC_EXT_ASA_ROGER_BEEP

Original issue reported on code.google.com by jon.pei...@gmail.com on 5 Dec 2008 at 10:16

[GoogleCodeExporter]

Support for differentiating between left and right modifier keys has only 
existed since Mac OS 10.3 (Panther), and 
handling this issue is still pretty tricky.

Basically, you need to use the NX_DEVICELCTLKEYMASK and related private 
constants (I believe they are buried in 
the IOKit headers), and compare them with the modifier bit field. They are 
several pitfalls associate with this 
process however, so I will see if I can dig up my old code which handles it.

- Tristam

Original comment by swiftcoder on 11 Dec 2008 at 8:11

[GoogleCodeExporter]

I've clarified in the programming guide (r2417) right-side modifiers are not 
supported in OS X (a limitation of 
Carbon).

Original comment by Alex.Hol...@gmail.com on 19 Dec 2008 at 4:31

• Changed state: WontFix
• Added labels: OpSys-OSX