Re: Two CBitmap questions

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The GDI+ Image/Bitmap classes will load png images. There's direct support
for alpha values.

The ATL class CImage uses GDI+ for loading/saving images and can/does wrap
an image as a DIBSection which can be used with GDI APIs.

To use BitBlt, the source bitmap needs to be selected into a DC.

Mark

--
Mark Salsbery
Microsoft MVP - Visual C++


"David Thielen" <thielen@xxxxxxxxxxxxx> wrote in message
news:C8BF130C-B964-4212-9D8D-6BEE73EDDB15@xxxxxxxxxxxxxxxx
Hi;

I am writing my first C++ program in 10 years I think so these are pretty
basic questions.

1) It looks like CBitmap.LoadBitmap cannot load png files. Is there a file
format with alpha that CBitmap does support? If not, what is the best way
to
draw bitmaps with alpha or is that "very difficult?" I don't have to have
this but it sure does make the output look better.

2) How do I draw a bitmap in a CDC? I thought it was with CDC.BitBlt but
you
cannot pass it a CBitmap.

--
thanks - dave
david_at_windward_dot_net
http://www.windwardreports.com

Cubicle Wars - http://www.windwardreports.com/film.htm




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