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Forums » Prof-UIS General Discussion » Transparent color for ribbon node bitmaps Collapse All
Subject Author Date
Ulrich Heinicke Sep 12, 2007 - 5:19 AM

I load a png file with following code into a ribbon node:
    CExtSkinBitmap m_bmpNew;
    LPCTSTR strPngImageResourceID;
    LPCTSTR strPngResourceSection;
    strPngResourceSection = _T("PNG");
    HINSTANCE hInst = ::AfxFindResourceHandle( strPngImageResourceID, strPngResourceSection );
    ASSERT( hInst );
    HRSRC hRsrc = ::FindResource(hInst, strPngImageResourceID, strPngResourceSection );
    m_bmpNew.LoadPNG_Resource(hInst, hRsrc);
    pNodeFileNew->m_iconBig.m_bmpNormal = m_bmpNew;
I want to use the color RGB(255, 0, 255) as transparent color, how can i do this ?

Technical Support Sep 12, 2007 - 1:04 PM

The following code makes the RGB(255,0,255) color transparent in a pNodeFileNew->m_iconBig.m_bmpNormal bitmap:

pNodeFileNew->m_iconBig.m_bmpNormal.AdjustAlpha( RGB(255,0,255), RGB(0,0,0), BYTE(0) );