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<div>Okey, so I see what they're trying to say, but what about functions from C that actually take input? For example, in Cairo, cairo_move_to() would not make the cut on its own. Matter of fact, it would take a surface in the form of a pointer and an x and
y value. So we would have </div>
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<div>cairo_surface_t *cr</div>
<div>cairo_move_to(cr, x, y);</div>
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<div>among countless others. Is Swift able to pull this out of thin air, or do we have to take each individual function and convert it to Swift ourselves? I guess what I'm asking is: Is Swift able to understand something like</div>
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<div>import CCairo</div>
<div>func cairo_line_to: Void(let cairo_t = MutableUnsafePointer(cr), x: Double, y: Double)</div>
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<div>after I include just a header file and map it? The function draws a line on a surface. Assuming the syntax is correct, then you're telling me the process is just:</div>
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<div>1) Map the cairo.h file to a system module named CCairo</div>
<div>2) Include that in a file</div>
<div>3) Convert any functions you've entered in C into a Swift format, no binding "workarounds" necessary like other lagnguages, and</div>
<div>4) Swift recognizes you meant to use that function that is written specifically in C and is included in that header file mapped by CCairo. If Swift cannot automatically know that you meant to pull a function from a C header file, what must I do if it cannot?</div>
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<div>I came here because I've read tutorials but am still confused on whether or not the CCairo module itself can just recognize a function without having to do more. <br>
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<div class="gmail_quote">On Mon, Dec 7, 2015 at 6:49 PM -0800, "Gage Morgan" <span dir="ltr">
<<a href="mailto:gagemorgan@outlook.com" target="_blank">gagemorgan@outlook.com</a>></span> wrote:<br>
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<div class="x_gmail_quote">_____________________________<br>
From: Gage Morgan <<a dir="ltr" href="mailto:gagemorgan@outlook.com">gagemorgan@outlook.com</a>><br>
Sent: Monday, December 7, 2015 9:40 PM<br>
Subject: Re: [swift-users] Binding Regular C Functions (Gtk, Cairo, etc.)<br>
To: Mish Awadah <<a dir="ltr" href="mailto:mawadah@apple.com">mawadah@apple.com</a>><br>
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<div>I read that. What I want to know is how to bind the functions themselves after creating a system package. How to use the c functions that got imported, if you will.
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<div class="x_gmail_quote">On Mon, Dec 7, 2015 at 6:39 PM -0800, "Mish Awadah" <span dir="ltr">
<<a href="mailto:mawadah@apple.com">mawadah@apple.com</a>></span> wrote: <br>
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<div class="" style="word-wrap:break-word">Please see the reference at <a href="https://github.com/apple/swift-package-manager/blob/master/Documentation/SystemModules.md" class="">
https://github.com/apple/swift-package-manager/blob/master/Documentation/SystemModules.md</a>
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<div class="">- mish </div>
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<div class="">On Dec 7, 2015, at 6:33 PM, Gage Morgan via swift-users < <a href="mailto:swift-users@swift.org" class="">
swift-users@swift.org</a>> wrote: </div>
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<div class="">For any project: How is a C to Swift function binding created? I'd like to know how to import C functions to Swift. Once I can do this successfully, I'll be all set.
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