This was broken by bfdf70d14a, so keep one of
the changes done there conditional on the platform to avoid changing behaviour
for the non-Mac ones.
Closes#17251.
This was broken since 39ad820bee which added
wxSEH_TRY to wxWndProc() which uses a local object with dtor when
wxDEBUG_LEVEL>=2 and so broke its compilation with MSVC which doesn't allow
the use of dtors in functions also using SEH.
Closes#17095.
Don't erase alpha channel of the entire destination image after drawing on it
using AlphaBlend(), we only need to do it for the area corresponding to the
bitmap drawn on it. This speeds things up when drawing small bitmaps with
alpha on a big bitmap without alpha selected into wxMemoryDC which is a common
case.
See #16766.
"%d" can't be used for size_t which may be of greater size than int, so use
"%lu" with a cast to unsigned long, as is done elsewhere because "%z" is
unfortunately not portable.
Closes#17255.
Explicitly mention that IDs effectively used when wxID_ANY is specified as
well as IDs returned by NewControlId() are negative and that the user IDs
should be positive to avoid clashing with such auto-generated ones.
Fix several problems with surrogates in UTF-16-encoded wchar_t strings:
correct bugs in UTF-8 and UTF-32 conversion code and add surrogates support to
wxText{Input,Output}Stream classes.
Closes#17070.
::SetWindowLong() can return 0 even if no error occurred but the previous
value of the ID just was 0, so we need to examine the last error to know
whether there really was an error -- and also to reset it to 0 before calling
the function as it wouldn't reset it if it succeeds, it only sets it if it
fails.
For the programs that use wxWidgets but can also run using just CLI, exiting
the program would show a bogus GTK error
GLib-GObject-CRITICAL **: g_type_class_unref: assertion 'g_class != NULL' failed
Fix this by only releasing the references to GTK_TYPE_WIDGET if we had
acquired it in the first place.
Closes https://github.com/wxWidgets/wxWidgets/pull/129
After the fixes in the previous commits conversions between wchar_t containing
surrogates and UTF-{8,16,32} work correctly, so add a test ensuring that this
is the case.
Notice that other conversions are still broken in presence of surrogates.
See #17070.
