You can check the properties of that object in the fckeditor.* files at the root of the distribution, but basically they are:
Obviously the Width and Height that will be used to create the element in the page.
The toolbar that you want to use for this instance.
The folder where the FCKeditor files are in your server. If you put a wrong value here you'll get lots of errors and nothing will work.
That's all. There are no more properties on the creation of the FCKeditor instance.
And you might ask "How am I supposed to configure any additional option?, Am I forced to always modify the fckconfig.js file?"
Well, I've lied a little, there's one extra property, the Config object, that's an object that allows to set pairs of propertie:value for the configuration options that you might set in the fckconfig.js file. There are some very important restrictions: you can't set here any OBJECT or ARRAY, you can set only STRINGS, NUMBERS or BOOLEAN values. But besides that restrictions, you are free to add any value here, as long as you set something that it's correct then you don't have to modify the fckconfig.js (I mean something valid, because some people write just anything here and expect it to magically work. It must be something that is allowed as a property of FCKConfig. in the fckconfig.js file
Let's do some examples with the
GoogleMaps_Key value used in the GoogleMaps plugin:
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ; oFCKeditor.Config["GoogleMaps_Key"] = 'ABQIAAAAlXu5Pw6DFAUgqM2wQn01gxT2yXp_ZAY8_ufC3CFXhHIE1NvwkxSy5hTGQdsosYD3dz6faZHVrO-02A'; ...
$oFCKeditor = new FCKeditor('FCKeditor1') ; $oFCKeditor->Config['GoogleMaps_Key'] = 'ABQIAAAAlXu5Pw6DFAUgqM2wQn01gxT2yXp_ZAY8_ufC3CFXhHIE1NvwkxSy5hTGQdsosYD3dz6faZHVrO-02A' ; ...
Dim oFCKeditor Set oFCKeditor = New FCKeditor oFCKeditor.Config("GoogleMaps_Key") = "ABQIAAAAlXu5Pw6DFAUgqM2wQn01gxT2yXp_ZAY8_ufC3CFXhHIE1NvwkxSy5hTGQdsosYD3dz6faZHVrO-02A" ...
It's just the same for every language, you use the "creator" object, and then set in its Config object the property that you want.