On-screen text in text area

BlitzPlus Forums/BlitzPlus Programming/On-screen text in text area

Rottbott

(Posted 2004) [#1]

Anyone got a good way to work out which section of the text in a text area gadget is actually visible in the text area?

The text area can be resized to any size.

soja	(Posted 2004) [#2]

Rottbott, here's something that will help you:
[a http://support.microsoft.com/default.aspx?scid=kb;en-us;88387]Microsoft Knowledge Base Article - 88387
HOWTO: Determine the Visible Area of a Multiline Edit Control[/a]

Rottbott

(Posted 2004) [#3]

Interesting.

Obviously what I really need to find is the first visible line in my text area, after which everything else is easy.

I think it depends on just what TextAreaCursor() returns. I'll investigate.

soja	(Posted 2004) [#4]

First visible line in textarea:

; .lib "user32.dll"
; SendMessage%(hwnd, msg, wParam, mParam):"SendMessageA"

Const EM_GETFIRSTVISIBLELINE = $00CE
Notify SendMessage(QueryObject(textarea,1), EM_GETFIRSTVISIBLELINE, 0, 0)
; note that it includes lines that are only partly visible

Rottbott

(Posted 2004) [#5]

Thanks, perfect. I'm useless at all this Win32 stuff!