如何定制列表框的背景

Comments

(no comments yet)

Log in or Join to leave comments.

Article Metadata

---

Tested with

Devices(s): S60 Emulator

---

Compatibility

Platform(s): Symbian

---

Article

Keywords: KAknsIIDQsnBgAreaMainListGene, MAknsSkinInstance, AknsUtils, SkinInstance, CAknsItemData, GetCachedItemData, EAknsITMaskedBitmap, CreateMaskedBitmapItemDefL, CreateBitmapItemDefL

Created: chenziteng (07 Oct 2009)

Last edited: hamishwillee (30 May 2013)

概述

S60第三版的列表框支持皮肤，它的背景实际上是一张图，这张图由KAknsIIDQsnBgAreaMainListGene标识，类似的ID的定义参见系统头文件AknsConstants.h。

以下代码演示了如何将当前列表框背景替换成自定义的图片。

void CTdjgmcqeListBox::ConstructL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
    ...
    _LIT(KMbmFile, "z:\\resource\\apps\\Tdjgmcqe.mbm");
    MAknsSkinInstance* skin = AknsUtils::SkinInstance();
    CAknsItemData* item = skin->GetCachedItemData(KAknsIIDQsnBgAreaMainListGene);
    if(item==NULL)
        {
        item = skin->CreateUncachedItemDataL(KAknsIIDQsnBgAreaMainListGene);
        }
    if(item->Type()==EAknsITMaskedBitmap)
        {
        CAknsItemDef* def = AknsUtils::CreateMaskedBitmapItemDefL(KAknsIIDQsnBgAreaMainListGene, KMbmFile, EMbmTdjgmcqeMainarea, EMbmTdjgmcqeMainareamask);
        skin->SetLocalItemDefL(def);
        }
    else
    	{
        CAknsItemDef* def = AknsUtils::CreateBitmapItemDefL(KAknsIIDQsnBgAreaMainListGene, KMbmFile, EMbmTdjgmcqeMainarea);
        skin->SetLocalItemDefL(def);
    	}
    ...
	}

源代码

完整的示例程序 (如果想在真机上运行请将硬编码的mbm路径从z:改为c:或者e:):

Tdjgmcqe(ListBoxCustomBackground).zip

屏幕截图 (第一张: 平常的列表框, 第二张: 拥有定制背景图的列表框):

相关文档

How to use custom background for listbox

How to change the highlighted listbox item background

How to use custom background for text editors