Not to my knowledge. You should be able to use the fixicon program offered by Allegro and link with the generated object file to gain an icon.

What? I don't think you can set the icon using code, I think you must add it to the header of the .exe file (using resources or whatever).

Exactly, so it has nothing to do with datafiles, that, and you can save an icon file and then associate it later using wfixicon or simply the proprties option.

Not really the solution you want, but I have code from an old project that can generate icons on the fly, allowing you to convert a allegro bitmap to an icon, then use that. I need to clean it up, as the project is a mess, I am going to clean it up now, which will take a little while. When its together I will post it here.

Here is a working of example of a bitmap that is converted to a HBITMAP, which is converted to a HICON which is then sent as a message to the window. (I am pretty sure when you SendMessage, it makes it own copy of the icon)

There is a code::blocks project file, and a makefile in the archive to build the example.

To use this all you have to do is:

HBITMAP HBImage = convert_bitmap_to_hbitmap(image);
HICON TEST = CreateIcon(HBImage, 1, 1);
DeleteObject(HBImage);
SendMessage(  win_get_window(), (UINT) WM_SETICON, (WPARAM) ICON_SMALL, (LPARAM) TEST);

The code works, but I am sure it could be improved.

One of the attached files is broken. I'm not sure which one, and you can't delete attachements, Just grab it from http://www.timorg.net/create_icon.zip

It just occurred to me you might not have meant windows, but unix has "extern void *allegro_icon;" to do it

I guess it depends on what they mean by 'program icon', I assumed they meant window icon. You know what they say when you assume something, makes and ass out of you and me.

Cute icon, had to write a program to view it (which is attached), from the text version it almost looked like the figures were having sex.

That doesn't work on windows, hence the program, if I ran linux, I could have done that.

Yes. Now look in the resource file. I bet you it references the icon as well.

Also, Timorg, if you simply use it in the resource file, the exe will then have that icon, and Windows will show it for the window by default.

I use a default rc for for all my programs, so they all have the same icon. But there are other cases where you might like to use a custom icon for the window. If your game is modded by providing a datafile that has the levels and art and everything in it, when you load the datafile, you might like to load a mods icon to the window icon (Which is possibly what the OP wanted). Or taking gimps example, a copy of the current bitmap is used for the editors window icon. Or you want to use allegro to generate tray icons, that change to show what is happening while your program is minimized.

As long as your not expecting it to change your programs executable icon, this can be really useful.