Text Formating

Does anyone know of a good way to format text like if the user types the word yes turn it blue and if the user types no turn it red, or if they type a number turn it brown? I was going to use a rich text box and just check it in the TextChanged section but my problem is to change the color or size or what not i would have to select the text. So what it is kind of like is like visual basic or C++ how do those programs change the text on the fly? And also how do they put those ~~~~~~ wavy lines below the problem areas like microsoft word does when you spell something wrong?

One way to highlight the words as they are typing them in is to use the keypress event. Don't scan the whole rtb everytime though, it would be too slow. What you do is store the last 25 (or as many as you think you need) characters typed in a static variable. Every time a user types a new character, you add it to the string at the end, remove the first, then scan that string for what your looking for. Make changes, then post those changes to the rtb. This stops the scanning of the whole document every time, and would end up saving a lot of time if the document was huge.

There are many other ways to do it though, mine is just one. There might be a lot better ways.

hi,

use richtextbox1.selcolor=vbgreen

What abot something like this:-

VB Code:

Private Sub Form_Load()
Text1.Text = vbLowerCase
End Sub
 
Private Sub Text1_Change()
 
If Text1.Text = "yes" Then
    Text1.ForeColor = vbBlue
 
    ElseIf Text1.Text = "no" Then
            Text1.ForeColor = vbRed
        Else
 
    End If
            If IsNumeric(Text1.Text) = True Then
                    Text1.ForeColor = vbGreen
 
End If
 
 
 
End Sub

This may be a littlre better. Sorry for the formatting but i have 1 minute before i go

Try this

VB Code:

Private Sub Form_Load()
Text1.Text = vbLowerCase
End Sub
 
Private Sub Text1_Change()
 
If Text1.Text = "yes" Then
    Text1.ForeColor = vbBlue
 
    ElseIf Text1.Text = "no" Then
                Text1.ForeColor = vbRed
    ElseIf IsNumeric(Text1.Text) = True Then
             Text1.ForeColor = vbGreen
             
    ElseIf Text1.Text <> yes And Text1.Text <> no And IsNumeric(Text1.Text) = False Then
            Text1.ForeColor = vbBlack
        
    
 
End If
 
 
End Sub