The call to ME_SendSelChange cannot be done in ME_CommitUndo like it was
before, because it must be done after wrapping. Native richedit controls
send EN_CHANGE first, which is sent in ME_UpdateRepaint, so
ME_SendSelChange must be before this notification in ME_UpdateRepaint.
The function was used in one place, and was simply a wrapper around a
call to ME_InsertRunAtCursor, so I removed it to avoids it use in other
parts of the code.
Previously the function was only used to move a single character in
either direction, so I made the function more general so that it could
be used in more places.
The test that succeeded from this change was as a result of allowing the
end of the character format change be specified using NULL as the rest
of the text. Before, the end paragraph run at the end of the text was
not being set for this case, when all the text was supposed to have its
character format changed.
This prevents some needless searching for the start of the paragraph
from a run stored in a cursor. Usually a pointer to the paragraph is
already available when the cursor is set anyway.
Previously a count of the carraige returns and line feeds were stored
for end of paragraph runs, and a paragraph sign was stored as the actual
string. This was causing many special cases where the length of the
run needed to be determined differently if the run was or wasn't an
end of paragraph run.
There wasn't any use for storing the paragraph sign unless some drawing
code gets commented out to allow the end paragraphs to be shown,
therefore I changed the code to store the actual string that gets
retrieved by WM_GETTEXT.
Previously the paragraph and cell border properties were lost when
deleting the text, then undoing the deletion. This would cause tables
to lose the colour and width of the table border.
This also reverts commit 2b52dd8450:
wordpad: Empty the richedit undo buffer on creation.
The reverted commit I created to fix an issue that only applied to Wine,
but it just masked the issue which was in richedit controls. The
default character format was set in two places while wordpad was
starting up, and caused wordpad to have two undo items at startup.
The error was a memory access of a freed object. In ME_AddUndoItem I
checked the top of the undo stack to end a coalescing undo transaction,
assuming that this should be either a valid undo item, or NULL, instead
it was already freed.
Consecutively typed characters are grouped together to be undone
together. The grouping of typed characters can be stopped by certain
events that are mentioned in MSDN's remarks on the EM_STOPGROUPTYPING
message, which is also implemented by this patch.
multiple undo actions in one EM_STREAMIN).
- Related changes to undo code (umIgnore mode is now handled
correctly).
- Numerous improvements in the RTF reader: it reads some character
attributes now (you will have proper small print in license agreements
now).
- Fixed a memory overwrite bug in conversion from CHARFORMAT2A to
CHARFORMAT2W.
