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Revision as of 00:34, 3 December 2012 by hamishwillee (Talk | contribs)

How to create a simple listbox in Symbian C++

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Created: vin2ktalks (29 Mar 2007)
Last edited: hamishwillee (03 Dec 2012)

Here is the code snippet to create a simple listbox:

In mmp file:

LIBRARY        avkon.lib 
LIBRARY eikcoctl.lib
LIBRARY eikctl.lib
LIBRARY bafl.lib

In the header file:

// FORWARD DECLARATION
class CEikColumnListBox;
// ...
 
class CMyAppContainer : public CCoeControl
{
// ...
 
public: // New functions
 
/**
* Create the listbox.
*/

void CreateListBoxL();
 
/**
* Initialize the listbox.
*/

void InitListBoxL();
 
private: // Data members
 
/**
* The listbox object
* Owned by CMyAppContainer.
*/

CEikColumnListBox* iListBox;
};

In the cpp file:

#include <eikclb.h>   // for CEikColumnListBox 
#include <aknlists.h> // for CAknSingleStyleListBox
#define KGranularityOfArray 10;
// ----------------------------------------------------------------------------
// CMyAppContainer::CreateListBoxL()
// Create the listbox.
// ----------------------------------------------------------------------------
//
void CMyAppContainer::CreateListBoxL()
{
//Delete the list box if already exists.
if ( iListBox )
{
delete iListBox;
iListBox = NULL;
}
 
// listbox instance
iListBox = new (ELeave) CAknSingleStyleListBox();
iListBox->ConstructL(this);
iListBox->SetContainerWindowL(*this);
 
// add scrollbars to listbox
iListBox->CreateScrollBarFrameL(ETrue);
iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(
CEikScrollBarFrame::EOn, CEikScrollBarFrame::EAuto );
 
const TPoint aPoint(0,0);
const TSize aSize(180,150);
 
//most important line , else the list box simply disappears
iListBox->SetExtent(aPoint,aSize);
 
//Fill list box with the data
InitListBoxL();
 
iListBox->ActivateL();
iListBox->DrawNow();
}
 
 
// ----------------------------------------------------------------------------
// CMyAppContainer::InitListBoxL()
// Initialize the listbox.
// ----------------------------------------------------------------------------
//
void CMyAppContainer::InitListBoxL()
{
// construct listbox item array
CDesCArray *itemList = new (ELeave) CDesCArrayFlat(KGranularityOfArray);
 
itemList->AppendL(_L("\tFirst item\t\t"));
itemList->AppendL(_L("\tSecond item\t\t"));
 
// set items and ownership
iListBox->Model()->SetItemTextArray(itemList);
iListBox->Model()->SetOwnershipType(ELbmOwnsItemArray);
 
iListBox->SetCurrentItemIndex(0);
iListBox->SetFocus(ETrue);
iListBox->HandleItemAdditionL();
}


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