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Do we have no color and null value for QColor

  • In the following code, I want to send null for QColor

    QColor myModel::getColorFromInstance(const QModelIndex& index ,myInst inst) const 
      GQColor *gcObj =  myColor::getInstance();
      if (gcObj) {
         return QColor(Qt::white);
       // I want to send null value from here to notify there is no color value . is it possibel 

    Edit: Please wrap code snippets with 3 backticks. -- @Wieland

  • A QColor can be valid or invalid.

    QColor myFunc() {
        return QColor(); // returns an invalid QColor

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