Categories: Symbian C++ | Code Examples | Location Based Services | How To

From Forum Nokia Wiki

The following code snippet demonstrates how to append selected categories to the specified landmark

It is necessary to include the following headers:

• clmkcategoryselectordlg.h
• tlmkitemiddbcombiinfo.h

And link against:

• lmkcommonui.lib
• eposlandmarks.lib
• lbs.lib

CPosLandmark* lm = ... // specify your landmark
 
// prepare dialog
CLmkCategorySelectorDlg * selectCategoriesDlg = CLmkCategorySelectorDlg :: NewL( ETrue );
selectCategoriesDlg->SetMopParent( this );    
RArray< TLmkItemIdDbCombiInfo > arrCategories;
CleanupClosePushL( arrCategories );
	    		              
// select array of categories
if( selectCategoriesDlg->ExecuteLD( arrCategories ) != 0 )				   
{	      
   for( int i = 0; i < arrCategories.Count(); i++ )
   {		            			            
      // get current category ID
      TPosLmItemId categoryId = arrCategories[ i ].GetItemId();
      if( categoryId != KPosLmNullItemId )
         lm->AddCategoryL( categoryId );
   }
   delete arrCategories[0].GetLmDb(); // fixing memory leak
}					   
CleanupStack::PopAndDestroy(); // arrCategories

And the following code snippet demonstrates how to remove all categories from the specified landmark:

CPosLandmark* lm = ... // specify your landmark
 
RArray< TPosLmItemId > categories;	            	            
// read all landmark categories
lm->GetCategoriesL( categories );
for( int i = 0; i < categories.Count(); i++ )
{
   TPosLmItemId categoryId = categories[ i ];
   // remove current category
   lm->RemoveCategory( categoryId );
}	            
categories.Close();

Internal Links

• How to select and show a landmark
• KIS000784 - Landmarks category selector dialog leaks memory