Function Reference


_GUICtrlRichEdit_GetLineLength

Retrieves the length of a line

#include <GuiRichEdit.au3>
_GUICtrlRichEdit_GetLineLength ( $hWnd, $iLine )

Parameters

$hWnd Handle to the control
$iLine line number
Special value: -1 - return number of unselected characters on lines containing selected characters

Return Value

Success: Multi-line control - Length of the line (in characters).
Single-line control - number of characters in the control.
Failure: 0 and sets the @error flag to non-zero.
@error: 101 - $hWnd is not a handle
102 - $iLine is neither positive nor -1
1022 - $iLine is greater than number of characters in the control

Remarks

A control that contains no text has one line.
The first inter-character position in a control is 0.

The result does not include carriage-return characters at the end of the line.

See Also

Search EM_GETLINELENGTH in MSDN Library.

Example

#include <GUIConstantsEx.au3>
#include <GuiRichEdit.au3>
#include <WindowsConstants.au3>

Global $g_idLblMsg

Example()

Func Example()
        Local $hGui, $hRichEdit, $iMsg
        $hGui = GUICreate("Example (" & StringTrimRight(@ScriptName, StringLen(".exe")) & ")", 320, 350, -1, -1)
        $hRichEdit = _GUICtrlRichEdit_Create($hGui, "This is a test.", 10, 10, 300, 220, _
                        BitOR($ES_MULTILINE, $WS_VSCROLL, $ES_AUTOVSCROLL))
        $g_idLblMsg = GUICtrlCreateLabel("", 10, 235, 300, 60)
        GUISetState(@SW_SHOW)

        Report("The current line contains " & _GUICtrlRichEdit_GetLineLength($hRichEdit, -1) & " characters")

        While True
                $iMsg = GUIGetMsg()
                Select
                        Case $iMsg = $GUI_EVENT_CLOSE
                                _GUICtrlRichEdit_Destroy($hRichEdit) ; needed unless script crashes
                                ; GUIDelete()   ; is OK too
                                Exit
                EndSelect
        WEnd
EndFunc   ;==>Example

Func Report($sMsg)
        GUICtrlSetData($g_idLblMsg, $sMsg)
EndFunc   ;==>Report