Method fillAlpha

qcustomplot.cpp:25430–25439

! Sets the opacity of all color map cells to \a alpha. A value of 0 for \a alpha results in a fully transparent color map, and a value of 255 results in a fully opaque color map. If you wish to restore opacity to 100% and free any used memory for the alpha map, rather use \ref clearAlpha. \see setAlpha */

  \see setAlpha
*/
void QCPColorMapData::fillAlpha(unsigned char alpha)
{
  if (mAlpha || createAlpha(false))
  {
    const int dataCount = mValueSize*mKeySize;
    for (int i=0; i<dataCount; ++i)
      mAlpha[i] = alpha;
    mDataModified = true;
  }
}

/*!
  Transforms plot coordinates given by \a key and \a value to cell indices of this QCPColorMapData