Hi,

Have you tried this outside of TextChanged?

I just tested it out using a button with AlwaysInEditMode set to both true and false and it's working fine for me either way. I didn't try it inside the TextChanged event, but perhaps you are running into some sort of timing issue with that event.

Hello,

I am using the NetAdvantage 2011 volume 1.

Unfortunately, the GetLineCount API call is still not working. The number of rows is allways 0. I am using AllwaysInEditMode = false for my UltraTextEditor.

const int EM_GETLINECOUNT = 0xBA;

public static void AutoSize(UltraTextEditor ut, int minLines, int maxLines)
{
    var rows = (int)SendMessage(ut.Handle, EM_GETLINECOUNT, IntPtr.Zero, IntPtr.Zero);
    ut.Height = rows * ut.Font.Height + 1 + ut.Margin.Vertical;
}

[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

When I try to use AllwaysInEditMode to true, the number of line counted is too high when I set the text property programatically. I am using this AutoSize function in the Text_Changed event.

When I am editing the text inside the box, it works fine as soon I hit a key that trigger a line count change (as return, or erasing a CR)

Can I have a confirmation whether this is a bug or not, or maybe I am missing something ?

Thank you ^^

Hi Harry,

In NetAdvantage 2010 Volume 2, we added support for GetLineCount and some other SendMessage calls on our editor controls. So you can now use them directly.

Anyway... I don't think I have a sample of the syntax for this. I recommend checking out Microsoft's documentation on calling API's from DotNet. Or just do a search on the web, there are a few sites out there that have already written the declarations of these API's for you.

Also note that the API you are looking for here is SendMessage. EM_GETLINECOUNT is the message you will send, not the API itself.