🚀 go-pugleaf

Hi Bob,
   CreateDIBitmap() is a misnomer--the function actually creates a 
device-dependent bitmap (DDB).  DDBs take on the format of the screen's 
current display settings, so if your code works on XP but not on Server 
2003, the first thing I'd suggest is to test the code when both systems 
are set to the same display settings (they might already be this way). 
Also, do you really need a DDB?  In the vast majority of cases, it's 
better to use a DIB section bitmap instead of a DDB.  A DIB section 
bitmap also has an associated HBITMAP, but the format of a DIB section 
isn't restricted to the format of the screen.  Have a look at the 
CreateDIBSection() function on MSDN, or if you're using the VCL, you can 
create a TBitmap, which uses a DIB section (as long as the PixelFormat 
property is not pfDevice; see http://tinyurl.com/42nec).

Good luck,
-- 
Damon (TeamB)
C++Builder Developer's Journal
  http://bcbjournal.com
BCB Commonly Asked Questions
  http://bcbjournal.com/bcbcaq


Bob wrote:
> I am creating a bitmap from a DIB.  It works fine on WIndows XP, but it does 
> not work on Windows 2003 Server.
> 
> hBitmap = CreateDIBitmap(hdc, &bmi->bmiHeader, CBM_INIT, img.bmpbits, bmi, 
> DIB_RGB_COLORS );
> 
> hBitmap equal null after the function call.  GetLastError returns 8.  Any 
> ideas what I am doing wrong?