gtk is confused about some win32 screen settings

[Antoine Martin]

It reports 42 bits per pixel on my screen.

As can be seen here in the gdk visual for win32 source (dead link - thanks gnome!)

https://git.gnome.org/browse/gtk+/tree/gdk/win32/gdkvisual-win32.c#n208

It says:

    g_error ("_gdk_visual_init: unsupported BITSPIXEL: %d\n", bitspixel);

  system_visual->depth = bitspixel;
  system_visual->byte_order = GDK_LSB_FIRST;
  system_visual->bits_per_rgb = 42; /* Not used? */

Now, I don't see the warning at all... but at least it doesn't crash.
We don't use the bits_per_rgb value for anything either, not yet anyway. But we should fix this before something bad happens.

For the record, on my system:

• GetDeviceCaps(SIZEPALETTE) returns 0
• GetDeviceCaps(BITSPIXEL) returns 32

No idea why we end up in the codepath that sets it to 42...

[Antoine Martin]

Note: GTK3 is also affected..

Not the first time that GTK gets confused about pixel depth either: #654.

[Antoine Martin]

Milestone renamed

[Antoine Martin]

Milestone renamed

[Antoine Martin]

Can no longer reproduce.