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C++ XPCOM component in Firefox 12
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flexo
Jun 4, 2012, 3:35:58 PM6/4/12
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Hi,
I want to make a C++ XPCOM component for Firefox 12. In this component, I want a function that will be passed a (native) function from javascript.In the function from the C++ component, the passed function will be changed (the pointer to the actual function code, reserved slots,...).
In my solution, I'm trying to pass a javascript object to the C++ component as jsval parameter. Now if I make an IDL file with a function that has an input parameter jsval, the generated header file makes the input parameter a const jsval. Does this mean I can't change a passed object from javascript to the C++ component from within the C++ component?
Also I include the jsapi.h file for the function JS_ValueToObject, but when building the component it says unresolved external symbol _imp_JS_ValueToObject. Do I need to include some specific dll file or something that contains the implementation of the functions in jsapi.h to build the component?
I want to make a C++ XPCOM component for Firefox 12. In this component, I want a function that will be passed a (native) function from javascript.In the function from the C++ component, the passed function will be changed (the pointer to the actual function code, reserved slots,...).
In my solution, I'm trying to pass a javascript object to the C++ component as jsval parameter. Now if I make an IDL file with a function that has an input parameter jsval, the generated header file makes the input parameter a const jsval. Does this mean I can't change a passed object from javascript to the C++ component from within the C++ component?
Also I include the jsapi.h file for the function JS_ValueToObject, but when building the component it says unresolved external symbol _imp_JS_ValueToObject. Do I need to include some specific dll file or something that contains the implementation of the functions in jsapi.h to build the component?
Neil
Jun 6, 2012, 4:48:17 AM6/6/12
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flexo wrote:
>In my solution, I'm trying to pass a javascript object to the C++ component as jsval parameter. Now if I make an IDL file with a function that has an input parameter jsval, the generated header file makes the input parameter a const jsval. Does this mean I can't change a passed object from javascript to the C++ component from within the C++ component?
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I'm no JSAPI hacker but doesn't jsval behave as a union type that can
>In my solution, I'm trying to pass a javascript object to the C++ component as jsval parameter. Now if I make an IDL file with a function that has an input parameter jsval, the generated header file makes the input parameter a const jsval. Does this mean I can't change a passed object from javascript to the C++ component from within the C++ component?
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contain a (const) pointer to a non-const object?
>Also I include the jsapi.h file for the function JS_ValueToObject, but when building the component it says unresolved external symbol _imp_JS_ValueToObject. Do I need to include some specific dll file or something that contains the implementation of the functions in jsapi.h to build the component?
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--
Warning: May contain traces of nuts.
bertwi...@hotmail.com
Jun 13, 2012, 10:35:42 AM6/13/12
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Thanks, I will try this and check if I can change the jsvals.
flexo
Jul 2, 2012, 5:52:51 AM7/2/12
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Ok thanks, it was the mozjs.lib that I needed to let the jsapi work :)
But now I would like to change the native method pointer of the JSFunction object (JSFunction_obj.u.n.native) of the passed function. Is this even possible doing this in a XPCOM component? I can't find any way to get a reference to this native pointer of a JSFunction so I can change it. Any idea?
But now I would like to change the native method pointer of the JSFunction object (JSFunction_obj.u.n.native) of the passed function. Is this even possible doing this in a XPCOM component? I can't find any way to get a reference to this native pointer of a JSFunction so I can change it. Any idea?
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