Often, you want to query an edit control to store the entry for later use.

TEdit has a number of querying member functions. Many of the edit control query and modification member functions return, or require you to specify, a line number or a character's position in a line. All of these indexes start at zero. In other words, the first line is line zero and the first character of a line is character zero.

The following table summarizes TEdit's query member functions.

Member function	Description
TEdit::IsModified	Find out if text has changed.
TEdit::GetText	Retrieve all text.
TEdit::GetLine	Retrieve a line.
TEdit::GetNumLines	Get number of lines.
TEdit::GetLineLength	Get length of a given line.
TEdit::GetSelection	Get index of selected text.
TEdit::GetSubText	Get a range of characters.
TEdit::GetLineIndex	Count characters before a line.
TEdit::GetLineFromPos	Find the line containing an index.
TEdit::GetRect	Get formatting rectangle.
TEdit::GetHandle	Get memory handle.
TEdit::GetFirstVisibleLine	Get index of first visible line.
TEdit::GetPasswordChar	Get character used in passwords.
TEdit::GetWordBreakProc	Get word-breaking procedure.
TEdit::CanUndo	Find out if edit can be undone.

Text that spans lines in a multiline edit control contains two extra characters for each line break: a carriage return ('\r') and a line feed ('\n'). TEdit's member functions retain the text's formatting when they return text from a multiline edit control. When you insert this text back into an edit control, paste it from the Clipboard, write it to a file, or print it to a printer, the line breaks appear as they did in the edit control. When you use query member functions to get a specified number of characters, be sure to account for the two extra characters in a line break.

See Also