Patty O'Dors wrote:
I've heard the phrase "streaming data into a rich text box" and I want to
know whether it means what I hope it means.
See the EM_STREAMIN and EM_STREAMOUT messages.
What I hope it means, is that if the user pastes a whole load of text into
the rich text box at once, such as a whole paragraph, a normal combobox would
only get change event / message for the whole lot of text. What I want is a
way for it to get one per each character, or some bastardization of such,
hence the text 'streams' into it, one character at a a time.
Does it? If not, what? If so, how do I do it?
Pasting into a richedit control does not involve the streaming messages. I
don't know of any standard way to get the per-character notifications you're
after. Perhaps you could intercept WM_PASTE and stream the clipboard into
the control. Or, maybe IRichEditOleCal lback::QueryAcc eptData would be
useful. Or, maybe you could record the current selection endpoints and
content length, perform the paste, and calculate the length of the pasted
text something like this:
new_end_pos = old_end_pos + (new_length - old_length);
Then [start_pos, new_end_pos) should give the range of the pasted text,
which you could go on to examine or process, though the control may have
already drawn itself by this time.
--
Doug Harrison
Microsoft MVP - Visual C++
