Cause:
This message deletes the currently selected text and replaces it with a text string. When the text type of the MLE is implicit, the characters affected may not necessarily be adjacent in the text buffer : the action is taken on the visually selected text which is continous on the screen.
Parameters:
param1
PSTRL pText Null-terminated text string.
param2
ULONG param2 Reserved.
returns
ULONG ulCount Number of bytes actually inserted.