ReAction RequestScreenMode

[jabbadude]

I'm trying to read the result of Reaction's RequestScreenMode

Reaction_Guide.pdf suggest (get file example) I should use the GetAttrs function, which I found defined in the file clib/reaction_lib_protos.h
But the linker doesn't know what GetAttrs is.

if(RequestScreenMode(obj[WIN_GSM], window))
{
  ULONG display_id = 0L;
  GetAttrs(obj[WIN_GSM],
    GETSCREENMODE_DisplayID, &display_id,
    TAG_DONE);

Anyone knows how I can read the result of RequestScreenMode

[Minuous]

To use any of the reaction.lib functions, you have to link reaction.lib, the same way as you would link amiga.lib or small.lib. Something like:

slink FROM LIB:c.o foo.o LIBRARY LIB:small.lib LIB:reaction.lib TO foo

Or you can use the GetAttr() function instead which is just an intuition.library function.

[jabbadude]

Thanks a lot!

I could not find reaction.lib anywhere, but your second suggestion works out just fine.

For the curious, in case somebody else comes across this problem, here's my code with an extra check to make sure it works as expected.

if(RequestScreenMode(obj[WIN_GSM], window))
{
	ULONG display_id = 0L;
	struct NameInfo name_info;

	GetAttr(GETSCREENMODE_DisplayID, obj[WIN_GSM],
			&display_id);

	GetDisplayInfoData(
		NULL,
		&name_info,
		sizeof(struct NameInfo),
		DTAG_NAME,
		display_id);

	printf("Selected display: %s\n", name_info.Name);
}

The output says "Selected display: PAL:High Res Laced", which was expected since that is what I chose in the screen mode requester.

[Minuous]

reaction.lib is in the OS3.9 NDK at https://os.amigaworld.de/index.php?lang=en&page=12
Works fine on OS3.2 etc.