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Added: 2002-08-19

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The subroutines I have created allow you
to augment the text by adding special
effects such as bold, underline, italics
and one of three colours (Red, Blue or
Green).

The effects are enabled by adding
control codes to the text to be displayed. These codes consist of a tilde (~) followed by a one or two character
modifier. The current list is:

~B Toggles bold on and off
~I Toggles italics on and off
~U Toggles underline on and off
~CR Switches to red text
~CB Switches to blue text
~CG Switches to green text
~CN Switches back to normal (black) text.

The text is displayed in a picture control and will be word wrapped at the edge of the control.

The format of the subroutine call is:

DisplayText picText, sText

Where "picText" is the name of the picture control you wish to display the text in and "sText" is the text string to
display. For the purposes of the sample code, the text to be displayed is defined in the Form_Load procedure.

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Highlight AllSub DisplayText (picText As Control, sText As String) '========================================================================== ' Displays text in the picture box, word wrapping at the relevant points. '========================================================================== Dim sString As String Dim sWords As String Dim nWordLen As Single Dim nPos As Integer '********************************************************************* '* Copy the input string and remove extraneous spaces '******************************************************************* sString = Trim$(sText) '******************************************************************* '* Reset the picture box state '******************************************************************* picText.Cls picText.CurrentX = 0 picText.CurrentY = 0 picText.FontBold = False picText.FontItalic = False picText.FontUnderline = False picText.AutoRedraw = True '******************************************************************* '* If there are no formatting codes, just display the text '******************************************************************* nPos = InStr(sString, "~") '**************************************************************** '* Loop printing text until we run out of control characters '**************************************************************** Do While nPos > 0 '**************************************************************** '* Extract any leading text '**************************************************************** sWords = Left$(sString, nPos - 1) sString = Mid$(sString, Len(sWords) + 1) '**************************************************************** '* If there is leading text, display it '**************************************************************** If Len(sWords) > 0 Then DisplayTextBlock picText, sWords '**************************************************************** '* Set the required formatting attribute '**************************************************************** sWords = Left$(sString, 2) sString = Mid$(sString, 3) Select Case UCase$(sWords) Case "~C" '**************************************************************** '* Colour change : the next colour indicates which '* colour we want to switch to; r=red, g=green, b=blue, '* n=normal(black) '**************************************************************** sWords = Left$(sString, 1) sString = Mid$(sString, 2) '************************************************************* '* Check which colour they want '************************************************************* Select Case UCase$(sWords) Case "R" picText.ForeColor = RGB(255, 0, 0) Case "G" picText.ForeColor = RGB(0, 255, 0) Case "B" picText.ForeColor = RGB(0, 0, 255) Case "N" picText.ForeColor = RGB(0, 0, 0) End Select Case "~B" '************************************************************* '* Toggle the setting of the bold flag '************************************************************* picText.FontBold = Not picText.FontBold Case "~U" '************************************************************* '* Toggle the setting of the underline flag '************************************************************* picText.FontUnderline = Not picText.FontUnderline Case "~I" '************************************************************* '* Toggle the setting of the italics flag '************************************************************* picText.FontItalic = Not picText.FontItalic End Select '**************************************************************** '* Now we loop to do the next one '**************************************************************** nPos = InStr(sString, "~") Loop '******************************************************************* '* Display whats left '******************************************************************* If Len(sString) > 0 Then DisplayTextBlock picText, sString End Sub Sub DisplayTextBlock (picText As Control, sText As String) '========================================================================== ' Displays text in the picture box, word wrapping at the relevant points. '========================================================================== Dim sString As String Dim sWord As String Dim nWordLen As Single Dim nSpace As Integer '******************************************************************* '* Stuff a trailing space in the end of a stripped string. This gives '* an end point for the loop. '******************************************************************* sString = sText '******************************************************************* '* Loop while there are words to wrap. '******************************************************************* Do While Len(sString) > 0 nSpace = InStr(2, sString, " ") If nSpace = 0 Then nSpace = Len(sString) '**************************************************************** '* Get next word and determine its size '**************************************************************** sWord = Left$(sString, nSpace) nWordLen = picText.TextWidth(sWord) '**************************************************************** '* See if it will fit on the screen. If not, break the line up. '**************************************************************** If (picText.CurrentX + nWordLen) > picText.Width Then '************************************************************* '* Insert a line break. '************************************************************* picText.Print "" '************************************************************* '* If we have leading spaces, drop them '************************************************************* If Right$(sWord, 1) = " " Then sWord = Trim$(sWord) & " " Else sWord = Trim$(sWord) End If End If '**************************************************************** '* Display the word. '**************************************************************** If Len(Trim$(sWord)) > 0 Then picText.Print sWord; '**************************************************************** '* Strip word out of string and continue loop. '****************************************************************** sString = Mid$(sString, Len(sWord) + 1) Loop End Sub

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