LDicomDS::GetOverlayBitmapList

L_INT LDicomDS_GetOverlayBitmapListExample(LDicomDS        &InDS,// Input dataset 
                                               HBITMAPLIST     hList,//Bitmap list to be populated 
                                               L_TCHAR*        pActivationLayer,//Retrieve activation layer if needed 
                                               L_UINT          uLength//Length of input buffer 
                                               ) 
{ 
   L_INT                nRet; 
   OVERLAYATTRIBUTES    OverlayAttributes = {0}; 
   L_INT                GroupNumber=0;  
   L_BOOL               IsOverlayInDataset = FALSE;  
 
   //(1)Sanity Check !  
   if(hList == NULL)  
   { 
      return DICOM_ERROR_NULL_PTR; 
   } 
   // Get activation layer 
   if(pActivationLayer && uLength)  
   { 
      nRet = InDS.GetOverlayActivationLayer (0,pActivationLayer,uLength); 
      if (nRet == DICOM_ERROR_OVERLAY_ACTIVATIONLAYER_MISSING) 
      { 
         OutputDebugString(TEXT("There is no Overlay Activation Layer in this dataset")); 
      } 
   } 
   nRet = InDS.GetOverlayAttributes (  0,  
                                      &OverlayAttributes,  
                                      sizeof(OverlayAttributes),  
                                      &GroupNumber,   
                                      &IsOverlayInDataset,  
                                      0);  
   if(nRet != DICOM_SUCCESS) 
      return nRet; 
 
   return InDS.GetOverlayBitmapList (0,  
                                    hList,  
                                    0,  
                                    OverlayAttributes.nNumFramesInOverlay,  
                                    0); 
}