XmTextGetTopCharacter - Man Page

#include <Xm/Text​.h>
XmTextPosition XmTextGetTopCharacter(
Widget widget);

XmTextGetTopCharacter accesses the position of the text at the top of the Text widget​. If there is no text in the Text widget (in other words, XmNvalue contains an empty string), then XmTextGetTopCharacter returns 0​.

Suppose that the XmNtopCharacter resource has been set to a value greater than the number of characters in the text widget​. In this case, XmTextGetTopCharacter returns an XmTextPosition value identifying the position of the first character in the last line of text in a multiline case; otherwise, it identifies the position of the last character in the line​.

widget

Specifies the Text widget ID

For a complete definition of Text and its associated resources, see XmText(3)​.

Returns an XmTextPosition value that indicates the state of the XmNtopCharacter resource​. This is an integer number of characters from the beginning of the text buffer​. The first character position is 0 (zero)​.

XmText(3)​.

XmText(3).