ShowGrayScaleDlg Example for C++ 5.0 and later

void CDialogs::OnShowGrayScaleDlg() 
{
   m_pRasterColorDlg->RedFactor = 400;
   m_pRasterColorDlg->GreenFactor = 300;
   m_pRasterColorDlg->BlueFactor = 300;
   m_pRasterColorDlg->UIFlags = GRAYSCALE_SHOW_PREVIEW |
                            GRAYSCALE_SHOW_TOOL_ZOOMLEVEL;

   m_pRasterColorDlg->Bitmap =  m_LeadRasterView.GetRaster().GetBitmap ();

   m_pRasterColorDlg->ShowGrayScaleDlg((long) this->m_hWnd);
}