Gets number of the first line which is visible in the control
#include <GuiRichEdit.au3>
_GUICtrlRichEdit_GetNumberOfFirstVisibleLine ( $hWnd )
| $hWnd | Handle to the control |
| Success: | the line number (1-based). |
| Failure: | 0 and sets the @error flag to non-zero. |
| @error: | 101 - $hWnd is not a handle |
The first line is numbered 1.
Search EM_GETFIRSTVISIBLELINE in MSDN Library.
#include <GUIConstantsEx.au3>
#include <GuiRichEdit.au3>
#include <WindowsConstants.au3>
Global $g_idLblMsg
Example()
Func Example()
Local $hGui, $iMsg, $hRichEdit
$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)
For $i = 2 To 50
_GUICtrlRichEdit_AppendText($hRichEdit, @CRLF & "Line " & $i)
Next
Report("First visible line is number " & _GUICtrlRichEdit_GetNumberOfFirstVisibleLine($hRichEdit))
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