Question about layers

[Allanon]

Hello,
I was wondering if there is a way to check if layers are enabled or not.
I've looked through the docs but the only thing I've found is query GetAttribute to know how many layers are currently attached to the associated bgpic of a given display, but of course this solution is not safe, for example if the layers have been enabled just before my check.

Any hints?

Thank in advance

[Bugala]

Dont know actual command, but program wise in normal cases it shouldnt be hard to put a variable my_islayerson=0 or 1 and keep changing it depending if you took layers on or off.

[Allanon]

Hi Bugala and thank you for your suggestion but it doesn't help
That's why I'm actually enhancing ScuiLib and I need to know if layer are enabled from Hollywood because the ScuiLib user may use layers or not and I cannot know this information in advance
Strictly talking I've to make a floating object and if user is using layers I will build this object using layers, if the user is not using layers I will make this floating object using a sprite.
I'd like to give the freedom to switch layers on/off to the final user.

[airsoftsoftwair]

I'm afraid that's currently not possible. I'll add a new attribute for this for the next version. Until then, you can use the following workaround:

Code: Select all

Function p_LayersEnabled()

ExitOnError(False)
GetAttribute(#LAYER, 1, #ATTRWIDTH)
Local code = GetLastError()
ExitOnError(True)

Return(IIf(code = 1078, False, True))
EndFunction

This should do the job

[Allanon]

Thank you Andreas!
Your sample code is really helpful, I'll try it ASAP

[airsoftsoftwair]

By the way, keep in mind that layers enabled/disabled is a setting that is local to each display. So if you have multiple displays opened, there could be differences between them, e.g. layers enabled in display 1, but disabled in display 2, etc.

[Allanon]

Oki, thank you

[Allanon]

I'm afraid that's currently not possible. I'll add a new attribute for this for the next version. Until then, you can use the following workaround:

Code: Select all

Function p_LayersEnabled()

ExitOnError(False)
GetAttribute(#LAYER, 1, #ATTRWIDTH)
Local code = GetLastError()
ExitOnError(True)

Return(IIf(code = 1078, False, True))
EndFunction

This should do the job

Hi Andreas,
I was thinking that if the Layer have been enabled just before the check this function will fail... but better then nothing...

[airsoftsoftwair]

Hmm, I don't get that, why do you think should this fail?

[Allanon]

Sorry Andreas,
I've misread your example, you have included a check with the specific error code and not against a generic error, wrongly I was thinking that a generic error check could have caused the function failing...
I'm a bit out of phase in this period, sorry again