Qt富文本处理

// textEdit->moveCursor( QTextCursor::End );
QTextCursor cursor( textEdit->textCursor() );

QTextCharFormat format;
format.setFontWeight( QFont::DemiBold );
format.setForeground( QBrush( QColor( "black" ) ) );
cursor.setCharFormat( format );

cursor.insertText( "Hello world!" );