OpenEuphoria

Re: Tommy Carlier's win32dib library problem

• Posted by Greg Haberek <ghaberek at ssoe.com> Jun 12, 2007
• 612 views

DB James wrote:
> 
> Hi,
> 
> I have been experimenting with the key function in this library: newDib() and
> am having no luck.  According to the documentation the handle to the new
> bitmap file is the first item in a returned sequence.
> 
> [Begin docs quote]
> Creating and deleting a bitmap
> 
> A Win32Dib-bitmap is a sequence of length 7:
> 
>     * dib[DibHandle] is the bitmap handle (integer) you can use in
>     Win32Lib-routines.
>     * dib[DibMemory] is the address (atom) of the memory block of the bitmap.
>     * dib[DibWidth] is the width of the bitmap in pixels.
>     * dib[DibHeight] is the height of the bitmap in pixels.
>     * dib[DibBytesPerLine] is the amount of bytes per line of the bitmap.
>     * dib[DibBytesTotal] is the total amount of bytes of the bitmap.
>     * dib[DibPadding] is the amount of bytes of padding after each scanline.
> 
> [End docs quote]
> 
> However, the first item is actually a huge number -- an atom.  It causes
> a type-check failure.  As far as I know, I have the latest version of the
> library.
> 
> Tommy..?  Or anyone get this to work?  
> 
> --Quark

You are confusing the terms "handle" and "id". A "handle" is a memory address; a
pointer to  the object in memory. A Win32Lib "id" is a sequential identification
number starting from 1. You can use this large-atom "handle" with Win32Lib bitmap
routines like bitBlt().

~Greg