256 Colors in a Visual Basic Picture Box Control !!!!
=====================================================

The enclosed files (see below) show how to display a 256 bitmap in a Visual
Basic picture box control.  The technique uses a DLL to read the bitmap
file into memory and create a palette which can then be selected into
the picture box's device context and subsequently realized (I can't take
any credit for the code within the DLL ... it was lifted with very
little modification from a couple of SAMPLE programs supplied with the
Microsoft Windows SDK.)

Hopefully, the code will be easy to read (famous last words), but if you
have difficulty following what's happening, feel free to holler a question
and I'll do my best to help out.

The demo (256PICBX) does have one "hidden" item which you may have trouble
finding.  The PicPreviewSource picture box can be found by sizing the
form downwards while in design mode.

                                                   Enjoy,
                                                   rpb 70742,3332

Files:

   256picbx.bas Ä¿
   256picbx.frm  ³  Files for the demo VB application
   256picbx.mak ÄÙ
   256picbx.exe     Precompiled version of demo application

   makefile    ÄÄ¿
   errors.c      ³  Source code for the bitmap utility library
   errors.h      ³  the makefile is for MSC 6.0, but can be used with QCWin
   dib.c         ³  by changing the CC = cl line to read CC = cl -qc and
   dib.h         ³  changing the line CFLAGS_R_WDLL = /Ox /DNDEBUG to
   dibutil.c     ³  CFLAGS_R_WDLL = /O /DNDEBUG
   dibutil.def   ³
   dibutil.h   ÄÄÙ
   dibutil.dll      Precompiled bitmap utility library