New Go (C Interface Binding) project & Linux PDF library integration

This guide will help you integrate a free trial of the Apryse SDK with Go using Apryse Headers on Linux. Your free trial includes unlimited trial usage and support from solution engineers.

• Go 1.6+

  Make sure Go is installed at /usr/local/go and /usr/local/go/bin.

• Apryse SDK for Linux

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1. Create a project directory called myApp.

2. Extract the PDFNetC64 package as a folder into your project directory.

Your files and folders should look similar to:

```

~/myApp
~/myApp/PDFNetC64
~/myApp/PDFNetC64/Headers
~/myApp/PDFNetC64/Lib
...
```

1. In your project directory, create a new file called myApp.go

   Add the following code inside:

   package main
   // #cgo CFLAGS: -IPDFNetC64/Headers
   // #cgo LDFLAGS: -LPDFNetC64/Lib -Wl,-rpath,PDFNetC64/Lib -lPDFNetC
   // #include "C/PDF/TRN_PDFNet.h"
   // #include "C/SDF/TRN_SDFDoc.h"
   // #include "C/PDF/TRN_PDFDoc.h"
   // #include "C/PDF/TRN_Page.h"
   // #include "C/Common/TRN_UString.h"
   // #include "C/Common/TRN_Types.h"
   // #include <stdlib.h>
   // #include <stdio.h>
   import "C"
   import (
       "fmt";
       "unsafe"
   )
   func main() {
       // PDFNet must be initialized before calling other Apryse API
       ccp := C.CString("YOUR_DEMO_KEY")
       C.TRN_PDFNetInitialize(ccp)
   
       // Create a new PDFDoc
       var doc *C.TRN_PDFDoc
       doc = (*C.TRN_PDFDoc)(C.malloc(C.size_t(unsafe.Sizeof(*doc))))
       C.TRN_PDFDocCreate(doc)
   
       // Allocate memory for a blank page
       var page *C.TRN_Page
       page = (*C.TRN_Page)(C.malloc(C.size_t(unsafe.Sizeof(*page))))
   
       // Allocate memory for a default rectangle
       var box *C.TRN_Rect
       box = (*C.TRN_Rect)(C.malloc(C.size_t(unsafe.Sizeof(*box))))
   
       // Create the page and add it to the document
       C.TRN_PDFDocPageCreate(*doc, box, page)
       C.TRN_PDFDocPagePushBack(*doc, *page)
   
       // Save the document as a linearized PDF
       var filepath C.TRN_UString
       C.TRN_UStringCreateFromCharString(C.CString("output.pdf"), C.int(10),
       C.e_UString_utf8, &filepath)
       C.TRN_PDFDocSave(*doc, filepath, 0);
       fmt.Println("Hello World!");
   }

   Save and close the file.

   Your files and folders should look similar to:

   ~/myApp
   ~/myApp/PDFNetCMac
   ~/myApp/PDFNetCMac/Headers
   ~/myApp/PDFNetCMac/Lib
   ...
   ~/myApp/myApp.go

2. In the project folder, run:

   go build

   This will produce a myApp executable file.

3. Run the executable file. The executable will produce a pdf with a blank page in a linearized format.

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