[Qt-interest] Different Text background color in QTextEdit

[rajasekharan]

Hari,

This was in the code editor example. This is the method that highlights 
the current line in which the cursor is. You have to sub class QTextEdit 
and add this method:

void CodeEditor::highlightCurrentLine()

{

QList<QTextEdit::ExtraSelection> extraSelections;

if (!isReadOnly()) {

QTextEdit::ExtraSelection selection;

QColor lineColor = QColor(Qt::yellow).lighter(160);

selection.format.setBackground(lineColor);

selection.format.setProperty(QTextFormat::FullWidthSelection, true);

selection.cursor = textCursor();

selection.cursor.clearSelection();

extraSelections.append(selection);

}

setExtraSelections(extraSelections);

}


I guess the if (!isReadOnly()) statement can be removed for your case.

Kind Regards,

Raj Sekharan



Hari Sundar wrote:
> Hi,
>
> I am trying to use QTextEdit in the read only mode to display 
> formatted log messages for my program. For this purpose, I wish to add 
> different lines formatted differently and with different background 
> colors based on the type of message.
>
> I tried to do this initially using HTML and stylesheet, but it appears 
> that CSS stylesheets are not fully supported. Specifically I was 
> unable to get background colors to work.
>
> So, I switched to using QTextCharFormat / QTextFrameFormat etc ... to 
> format my text, but am unable to set background color even with this.
>
> Is it possible ? What am I missing ? Alternatively is there any other 
> widget better suited for this task ?
>
> thanks,
> Hari
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