Skin Framework - 32bit png display using CXTPSkinImage

32bit png display using CXTPSkinImage

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Category: Codejock Products
Forum Name: Skin Framework
Forum Description: Topics Related to Codejock Skin Framework
URL: http://forum.codejock.com/forum_posts.asp?TID=10354
Printed Date: 14 May 2024 at 2:03pm
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Topic: 32bit png display using CXTPSkinImage

Posted By: winrive
Subject: 32bit png display using CXTPSkinImage
Date Posted: 25 April 2008 at 1:19am

I want to display background of control(or window) using CXTPSkinImage.

below is my code.

CXTPSkinImage m_BKImage;

BOOL bIsAlpha = TRUE;

HBITMAP hBitmap = CXTPImageManagerIcon::LoadBitmapFromResource( MAKEINTRESOURCE(nResourceID), &bIsAlpha );

m_BKImage.SetBitmap( hBitmap, bIsAlpha );

CXTPClientRect rcClient(this);

dc.FillSolidRect( &rcClient, RGB(0,0,0) );

CSize sizeImage = CSize( m_BKImage.GetWidth(), m_BKImage.GetHeight() );

m_BKImage.DrawImage( &dc, rcClient, CRect(0,0,sizeImage.cx,sizeImage.cy), CRect(0,0,0,0), ST_TRUESIZE, TRUE );

but i got strange result

some parts of image are strange( see white area in b) )

a) in photoshop

b) result

What is wrong?

Here is png file

https://forum.codejock.com/uploads/20080425_011633_btn_play06_n.zip - uploads/20080425_011633_btn_play06_n.zip

Replies:

Posted By: Oleg
Date Posted: 25 April 2008 at 6:20am

Use ImageManager instead.

XTPImageManager()->SetIcons(....);

XTPImageManager()->GetIcon(1)->Draw(...);

or Premultiply bitmap for SkinImage:

hBitmap = CXTPImageManagerIcon::PreMultiplyAlphaBitmap(hBmp, &m_bAlpha);

DeleteObject(hBmp);

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Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS

Posted By: winrive
Date Posted: 27 April 2008 at 7:43pm

It works good

Thanks a lot.

Could you let me know another better apporach for dispalying alpha png for background?

Posted By: Oleg
Date Posted: 28 April 2008 at 12:43am

As I worte better use some XTPImageManager. You can create some instance for your buttons:

m_pImageManager = new CXTPImageManager();

m_pImageManager->SetIcons(...);

...

m_pImageManager()->GetImage(x)->Draw(...);

-------------
Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS