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Newsgroups: comp.lang.ada
Date: Tue, 26 Jun 2018 06:13:02 -0700 (PDT)
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Subject: Re: Problem Building Ada Interface To ImageMagick 7
From: Roger <rogermcm2@gmail.com>
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Xref: reader02.eternal-september.org comp.lang.ada:53324
Date: 2018-06-26T06:13:02-07:00
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On Tuesday, June 26, 2018 at 7:34:57 PM UTC+10, gautier...@hotmail.com wrote:
> Is there something specific you want to do with ImageMagick ?

The current specific thing I'm trying to do (in support of a larger project) is to get ImageMagick to read an image file and writing the image to another file.
I am using a simple ImageMagick tutorial to do this.
The tutorial read and write functions work when built as an XCode project but fail as a GNAT GPS project.
The code that I posted constitutes some of my attempts to track the problem.

Following is the tutorial code which builds and runs properly with XCode but fails under GNAT:
//  main.cpp
//  ImageMagick_Test

#include <Magick++.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>

using namespace std;
using namespace Magick; 

int main(int argc, const char * argv[]) {
    InitializeMagick(*argv);
    
    // Construct the image object. Seperating image construction from the
    // the read operation ensures that a failure to read the image file
    // doesn't render the image object useless.
    Image image;

    try {
        // Read a file into image object
        image.read( "logo:" );
        
        // Crop the image to specified size (width, height, xOffset, yOffset)
        image.crop( Geometry(100,100, 100, 100) );
        
        // Write the image to a file
        image.write( "../../../../logo.png" );
    }
    catch( Exception &error_ )
    {
        cout << "Caught exception: " << error_.what() << endl;
        return 1;
    } 
    return 0;
}