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Readonly textbox - change forecolor

I have a VB7 app that needs the text color of a readonly textbox to be set in code : red if out of spec, black if in spec. I can't do it!!!

MigrationUser 1 Thursday, December 04, 2003 5:43 PM

Hi ,
I too need a solution for this issue. I am doing IM Application. In that i am using readonly textbox for showing chat message. In that, for "I said: " or " chatuser said: " I would like to show a different color and for msg i need to show black color.

Any one pls help me how to do this.

Regards,
M.Sathya.

msathya03 Monday, April 13, 2009 1:47 PM

@MSathya: I would recommend using a RichTextbox control if you need to change the color of certain parts of the text... especially if it is certain words or patterns. The following code may illustrate this...

        Dim WordToColor As String = "I said: "
        Dim idx As Int32 = 0
        Do While idx <> -1
            idx = RichTextBox1.Text.IndexOf(WordToColor, idx)
            If idx <> -1 Then
                With RichTextBox1
                    .SelectionStart = idx
                    .SelectionLength = WordToColor.Length
                    .SelectionColor = Color.Red
                End With
                idx += WordToColor.Length
            End If
        Loop

Dig-Boy Thursday, April 16, 2009 12:31 AM

Hi Dig-Boy,
I am developing for Windows mobile 6.0. It doesn't have RichTextBox option. :(

msathya03 Friday, April 17, 2009 9:59 AM

I haveaVB7appthatneedsthetextcolorofareadonlytextboxtobesetincode:redifoutofspec,blackifinspec.Ican'tdoit!!!

The work around is to use the TextBox without setting the read-only flag and then capture the TextChanged event. the code below works fine.

public partial class Form1 : Form
    {
        string TextBoxText = "";
        public Form1()
        {
            InitializeComponent();
            textBox1.TextChanged += new EventHandler(textBox1_TextChanged);
            TextBoxText = textBox1.Text;
            textBox1.ForeColor = Color.Red;
            textBox1.BackColor = SystemColors.Control;

        }

        void textBox1_TextChanged(object sender, EventArgs e)
        {
             textBox1.Text= TextBoxText;


        }
    }

Kavitesh Singh.

Kavitesh Singh Monday, July 13, 2009 1:21 PM

You can use google to search for other answers

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