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32bit png display using CXTPSkinImage

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winrive View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote winrive Quote  Post ReplyReply Direct Link To This Post Topic: 32bit png display using CXTPSkinImage
    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
 
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Oleg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oleg Quote  Post ReplyReply Direct Link To This Post 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);
Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS
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winrive View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote winrive Quote  Post ReplyReply Direct Link To This Post 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?
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Oleg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oleg Quote  Post ReplyReply Direct Link To This Post 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
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