Described in the comments and documented the semantics of the parameters and

[wxWidgets.git] / docs / latex / wx / text.tex

diff --git a/docs/latex/wx/text.tex b/docs/latex/wx/text.tex
index 0da0113a0ff38db0ef1a7cfccb1ff96162800145..c95afcff683b7c82601f3ff821c4eb2aa56cb7ec 100644 (file)
--- a/docs/latex/wx/text.tex
+++ b/docs/latex/wx/text.tex
@@ -731,12 +731,17 @@ Returns the number of lines in the text control buffer.
 \wxheading{Remarks}
 
 Note that even empty text controls have one line (where the insertion point
-is), so GetNumberOfLines() never returns 0.
+is), so GetNumberOfLines() never returns $0$.
 
-For gtk\_text (multi-line) controls, the number of lines is
-calculated by actually counting newline characters in the buffer. You
-may wish to avoid using functions that work with line numbers if you are
-working with controls that contain large amounts of text.
+For wxGTK using GTK+ 1.2.x and earlier, the number of lines in a multi-line
+text control is calculated by actually counting newline characters in the
+buffer, i.e. this function returns the number of logical lines and doesn't
+depend on whether any of them are wrapped. For all the other platforms, the
+number of physical lines in the control is returned.
+
+Also note that you may wish to avoid using functions that work with line
+numbers if you are working with controls that contain large amounts of text as
+this function has $O(N)$ complexity for $N$ being the number of lines.
 
 
 \membersection{wxTextCtrl::GetRange}\label{wxtextctrlgetrange}
@@ -1247,7 +1252,7 @@ Converts the given zero based column and line number to a position.
 
 \wxheading{Return value}
 
-The position value.
+The position value, or -1 if {\tt x} or {\tt y} was invalid.
 
 
 \membersection{wxTextCtrl::operator \cinsert}\label{wxtextctrlinsert}