OpenEuphoria

Re: Win32lib Pixmap

• Posted by David Cuny <dcuny at LANSET.COM> Jun 28, 1999
• 371 views

Mark wrote:

> I can't figure out where to look for the actual address
> to write to.


It would help if you had a good Win32 programming text; I *think* the latest
Petzold book goes into DIBs in mind-numbing detail.

You should also have the Win32 Programmer's Reference, which is available
through a link on the RDS site.

The GetObject function can be used to obtain a filled-in DIBSECTION, which
contains the header information of the DIB. The first chunk of information
is a BITMAP section, which contains a pointer to the bits. You can also use
the GetDIBits/SetDIBits function to get and set bits.

> I assume that I have  to use another routine to actually
> get the DIB to show  up in the window, is that correct?

The Win32Lib function drawBitmap is used, which does a lot of setup, and
then calls BitBlt to display the DIB.

Hope this helps! Coding the bitmap stuff was one of the most difficult parts
of Win32Lib.

-- David Cuny