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GBM 1.41 + REXX, GBMV2 1.28, GBM File Dialog + REXX

June 25, 2006 by Heiko Nitzsche

++ From the VOICE OS/2-eCS News Service ++

From: Heiko Nitzsche

The bitmap formats PBM, PGM, PPM and PNM (binary + ASCII) are
now supported by GBM.DLL (read and write). The GBM File Dialog
help and the documentation has been updated with all options
for these formats.

Notes for eComStation 1.2/1.2R users
Please read the installation instructions. eCS 1.2/1.2R ships with an old GBM.DLL (1.12) which prevents loading of the new GBM.DLL (1.41). Please follow the instructions to use the new GBM.DLL for all programs as well as for eCS WPS features like bitmap previews.
If you cannot replace the eCS shipped GBM.DLL, please execute unlock x:os2dllgbm.dll from a command line. Then override the old GBM.DLL with the new one. Don't forget to reboot afterwards.

GBM.DLL 1.41 and GBM command line tools
(Public Domain)

The Generalised Bitmap Module (GBM) is a library capable of loading and
saving bitmap files in a variety of popular and less popular bitmap file
formats. Programs may be written to use this code, and thus be able to
access a variety of file formats without actually knowing what format
the pictures are in, or any details about file format itself.

In this version, extended BMP, PNG, TIF, PBM, PGM, PPM and PNM support is additionally included. PNG and TIF support also 16, 32, 48, 64 bpp colour depths with/without alpha channel. PPM supports also 48 bpp colour depth. BMP supports also OS/2 RLE24 and Windows 16/32 bpp RGB and BITFIELDS formats.

It comes with a useful set of command line bitmap manipulation tools.

Get package from Hobbes.
It is also included in the WarpIN installation package (see below).

Enhanced GBMV2 Version 1.28
(Public Domain)

GBMV2 is a fast and simple bitmap viewer and editor for the
OS/2 and eCS Presentation Manager.

Enhanced release of the GBMV2-Viewer from the GBMOS2PM package:
* An English and a German version of GBMV2 is included.
* An English and a German version of the GBM file dialog is included.

GBMDLG.DLL has been extended by:
* Bitmap preview within the file dialog
* Redesign to fit eComStation file dialog style

Several extensions for keyboard shortcuts have been added.
Both parts got new resources that better fit to the Warp 4
and eComStation look & feel. Resources for fonts 8.Helv and
9.WarpSans for both, German and English are available in the
sources package.

Get package from Hobbes.
It is also included in the WarpIN installation package (see below).

GBM.DLL REXX adapter library (GBMRX 1.0)
(Public Domain)

GBMRX.DLL is a REXX adapter DLL for OS/2 and eComStation which REXX programs may use to load or save all bitmap file formats supported by the GBM.DLL (to/from a file).

Almost full feature set of GBM.DLL is provided by the REXX API. I/O remapping is not supported due to language restrictions.

Get package from Hobbes.
It is also included in the WarpIN installation package (see below).

GBM File Dialog REXX adapter library (GBMDLGRX 1.01)
(Public Domain)

The REXX adapter DLL allows REXX programmers to use the GBM File Dialog in their programs. It requires availability of GBM.DLL and the GBM File Dialog DLLs (GBMDLG.DLL and GBMDLG.HLP).

Get package from Hobbes.
It is also included in the WarpIN installation package (see below).

The new homepage of GBM for OS/2 and eCS

It provides:
- reworked documentation (now also included in the download archives)
- developer tutorials on how to use GBM libs in your own programs
- download of all sources and binaries

What's new compared to GBM.DLL 1.40, GBMV2 1.27

* extended PPM support (24/48 bpp, types: ascii P3 and binary type P6, multipage type P6)
* extended PGM support (8 bpp , types: ascii P2 and binary type P5, multipage type P5)
* new PBM support (1 bpp , types: ascii P1 and binary type P4, multipage type P4)
* new PNM support (same subformats as PBM/PGM/PPM, multipage PNMs)

GBM.DLL, GBM command line tools, GBMV/GBMV2, GBM File Dialog
* Modified compiler options for OpenWatcom build after profiling.
Performance benefits are between 5 and 20 percent depending on the image format and the specified options. Overall performance on my Athlon64 3000+ is now close to the IBM VAC build.

GBM File Dialog
* Updated online help to reflect newly supported PBM, PGM, PPM and PNM formats

* They have been recompiled with slightly different compiler options but there was no functional change. If you want the recompiled versions get the WarpIN package which has them included.

For more details please have a look at the change log in the included documentation or at my GBM homepage (see above).

Download from Hobbes

WarpIN installation package (GBM.DLL, GBM command line tools, GBMV2, GBMRX, GBMDLGRX, Doc):

Full source code:

If the links don't show anything, the packages might not yet have reached its final location in the Hobbes archive. In this case please lookup the incoming folder.

Have fun,
Heiko Nitzsche
(Germany, 24-Jun-2006)

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