How to get the current column and line number of a text control
in [Visual Studio]
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From: Leo on 11 Jun 2010 07:53 Hi all I am trying to get the current column and line number of a text control. I have tried sending the EM_GETLINEINDEX message to no avail using uMessage = RegisterWindowMessage("EM_GETLINEINDEX") . I thought I should be able to get the column with Me.ActiveControl.SelStart (i am using Me.ActiveControl because of the need to have two identical textboxes to provide toggleable wordwrap) but that seems to not work properly when hitting enter to get to the next line. -- ClassicVB Users Regroup! comp.lang.basic.visual.misc Free usenet access at http://www.eternal-september.org
From: Mayayana on 11 Jun 2010 09:31 This code goes in a form with a multi-line textbox named T1 and two labels, Lab1(0) and Lab1(1). Private Const EM_LINEFROMCHAR = &HC9& Private Const EM_LINEINDEX = &HBB& Private Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Private Sub T1_Click() Dim LDex As Long, LLine As Long LLine = SendMessageLong(T1.hWnd, EM_LINEFROMCHAR, T1.SelStart, 0&) Lab1(0).Caption = CStr(LLine + 1) LDex = SendMessageLong(T1.hWnd, EM_LINEINDEX, LLine, 0&) Lab1(1).Caption = CStr((T1.SelStart - LDex) + 1) End Sub The demo code above shows it working for a click in the textbox, but you'll actually need to respond to left mouseup (click), navigation keys keyup, and return key keyup. | Hi all I am trying to get the current column and line number of a text | control. I have tried sending the EM_GETLINEINDEX message to no avail | using uMessage = RegisterWindowMessage("EM_GETLINEINDEX") . I thought I | should be able to get the column with Me.ActiveControl.SelStart (i am | using Me.ActiveControl because of the need to have two identical | textboxes to provide toggleable wordwrap) but that seems to not work | properly when hitting enter to get to the next line. |
From: Leo on 11 Jun 2010 10:09
Mayayana pretended : > This code goes in a form with a multi-line > textbox named T1 and two labels, Lab1(0) > and Lab1(1). > > Private Const EM_LINEFROMCHAR = &HC9& > Private Const EM_LINEINDEX = &HBB& > Private Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" > (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam > As Long) As Long > > > Private Sub T1_Click() > Dim LDex As Long, LLine As Long > LLine = SendMessageLong(T1.hWnd, EM_LINEFROMCHAR, T1.SelStart, 0&) > Lab1(0).Caption = CStr(LLine + 1) > LDex = SendMessageLong(T1.hWnd, EM_LINEINDEX, LLine, 0&) > Lab1(1).Caption = CStr((T1.SelStart - LDex) + 1) > End Sub > > The demo code above shows it working for a > click in the textbox, but you'll actually need to > respond to left mouseup (click), navigation keys > keyup, and return key keyup. > > >> Hi all I am trying to get the current column and line number of a text >> control. I have tried sending the EM_GETLINEINDEX message to no avail >> using uMessage = RegisterWindowMessage("EM_GETLINEINDEX") . I thought I >> should be able to get the column with Me.ActiveControl.SelStart (i am >> using Me.ActiveControl because of the need to have two identical >> textboxes to provide toggleable wordwrap) but that seems to not work >> properly when hitting enter to get to the next line. Thankyou very much -- ClassicVB Users Regroup! comp.lang.basic.visual.misc Free usenet access at http://www.eternal-september.org |