关于Symbian 动态列表的构建
1．MMP文件中需要的库：
LIBRARY euser.lib apparc.lib cone.lib eikcore.lib
LIBRARY eikcoctl.lib avkon.lib eikctl.lib bafl.lib
2．在资源文件中定义ListBox 资源：
RESOURCE LISTBOX r_notebook_listbox
{
flags = EAknListBoxSelectionList | EAknListBoxLoopScrolling;
}
3．定义拥有ListBox的控件类，使其从CCoeControl,和MEikListBoxObserver 公有继承，并在类中定义ListBox为数据成员：
#include <aknlists.h> // CAknSingleStyleListBox
#include <barsread.h> // TResource Reader
#include <e32def.h> // STATIC_CAST
#include <eikclbd.h> // CColumnListBoxData
#include <eikmenub.h> // CEikMenuBarclass
#include <stringloader.h> // StringLoader
#include <uikon.hrh> // TKeyCode #defines
CContainer : public CCoeControl, MEikListBoxObserver
{
// Other Code
private:
CAknColumnListBox* iList;
}
CAknColumnListBox 为ListBox的基类。
4．建立列表：
void CreateListL()
{
iList = new (ELeave) CAknSingleStyleListBox;
iList->SetContainerWindowL(*this);
TResourceReader reader;
CEikonEnv::Static()->CreateResourceReaderLC(reader, R_NOTEBOOK_LISTBOX);
iList->ConstructFromResourceL(reader);
CleanupStack::PopAndDestroy();
}
5．加载列表项：
void SetupListItemsL()
{
CTextListBoxModel* model = iList->Model();
model->SetOwnershipType (ELbmOwnsItemArray);
CDesCArray* savedArray = STATIC_CAST(CDesCArray*, model->
ItemTextArray());
LoadSavedL(*savedArray);
}
void LoadSavedL(CDesCArray& aArray)
{
_LIT (KString,"\tSelect%d");
TBuf <16> aString;
for (TInt i = 1; i< 10; i++)
{
aString.Format(KString(),i);
aArray.AppendL (aString);
}
}
首先取得列表的模型，获取模型中的列表项数组，将列表项逐个添加到列表项数组里。
6．设置滚动条：
void SetupScrollBarsL()
{
iList->CreateScrollBarFrameL();
iList->ScrollBarFrame()->SetScrollBarVisibilityL(
CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);
}
7．其他控件属性或函数的设置：
TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
{
if (iList)
return iList->OfferKeyEventL (aKeyEvent, aType);
else
return EKeyWasNotConsumed;
}
void SizeChanged()
{
iList->SetExtent( TPoint(0,0), iList->MinimumSize() );
}
void Draw(const TRect& aRect) const
{
CWindowGc& gc = SystemGc();
gc.Clear(aRect);
}
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