by Eriond (1 Submission)
Category: String Manipulation
Compatability: Visual Basic 3.0
Difficulty: Advanced
Date Added: Wed 3rd February 2021
Rating: 
(4 Votes)
This sifts through all the text in a RTF file and changes the colour of html tags. It can be used ewither automatically or on the fly (as you type into the RTF box). It currently Chnages the colour of html tags (defined as anything between "<" and ">") and html comments (""). Enjoy! Please mail me with suggestions
Assumes
You need to have a RTF box with the default name (richtextbox1) on your form.
Side Effects
No side effects have been noticed.
API DeclarationsYou need to declare these variable within your forms declarations:
For the On the Fly Declare:
Dim previous as integer
For the automated declare:
posStart As Integer
Dim previousChar As String
VBcodersOn The Fly:
Private Sub RichTextBox1_KeyPress(KeyAscii As Integer)
Select Case KeyAscii
Case 60
'open tag
RichTextBox1.SelLength = 0
RichTextBox1.SelColor = &H8000000F
previous = KeyAscii
Case 62
'close tag
RichTextBox1.SelLength = 0
RichTextBox1.SelText = ">"
RichTextBox1.SelColor = &H0&
previous = KeyAscii
KeyAscii = 0
Case 33
'comments
If previous = 60 Then
RichTextBox1.SelStart = RichTextBox1.SelStart - 1
RichTextBox1.SelLength = 1
RichTextBox1.SelText = ""
RichTextBox1.SelLength = 0
RichTextBox1.SelColor = &HC00000
RichTextBox1.SelText = " previous = KeyAscii
KeyAscii = 0
End If
End Select
End Sub
Automated:
Sub ChangeColours()
Dim posEnd As Integer
i = 0
For i = 0 To Len(RichTextBox1.Text)
RichTextBox1.SelStart = i
RichTextBox1.SelLength = 1
If RichTextBox1.SelText = "<" Then 'start tag
posStart = i
End If
If RichTextBox1.SelText = ">" Then 'end tag
posEnd = i
End If
If RichTextBox1.SelText = "!" Then 'comment
previousChar = "!"
End If
If posEnd <> 0 Then
RichTextBox1.SelStart = posStart
RichTextBox1.SelLength = posEnd - posStart + 1
If previousChar <> "!" Then 'if not comment
RichTextBox1.SelColor = &H8000000F
Else:
RichTextBox1.SelColor = &HC00000
previousChar = " "
End If
RichTextBox1.SelStart = posStart + 1
RichTextBox1.SelLength = 0
RichTextBox1.SelColor = &H0&
PosEnd = 0
posStart = 0
End If
Next i
End Sub
