[英]Save Montage to Blob with Magick++
I have a montage, and I can save it to disk when specified the destination path.However when I try to save it to a Blob it fails. 我有一个蒙太奇,可以在指定目标路径后将其保存到磁盘,但是当我尝试将其保存到Blob时会失败。
Am I missing some settings? 我是否缺少某些设置?
Version: ImageMagick 6.8.2-5 2013-02-05 Q8 版本:ImageMagick 6.8.2-5 2013-02-05 Q8
Machine: Windows 7 x64 机器:Windows 7 x64
EDIT : The exception: 编辑 :例外:
Unhandled Exception: System.Runtime.InteropServices.SEHException: External component has thrown an exception.
at Magick.throwException(_ExceptionInfo* )
at Magick.writeImages<class std::_List_iterator<class std::_List_val<class Magick::Image,class std::allocator<class Magick::Image> > > >
(_List_iterator<std::_List_val<Magick::Image\,std::allocator<Magick::Image> > > first_, _List_iterator<std::_List_val<Magick::Image\,std::allocator<Magick::Image
> > > last_, Blob* blob_, Boolean adjoin_) in d:\dev\projects\ecs\layers\tools\imagemagicknet\include8\magick++\stl.h:line 2562
The Code: 编码:
void test()
{
list<Magick::Image> sourceImageList;
Magick::Image image;
image.read("d:\\imtest\\Montage\\1.jpg");
sourceImageList.push_back(image);
image.read("d:\\imtest\\Montage\\2.jpg");
sourceImageList.push_back(image);
image.read("d:\\imtest\\Montage\\3.jpg");
sourceImageList.push_back(image);
Magick::Color color("rgba(0,0,0,0)");
Montage montageSettings;
montageSettings.geometry("100x100-0-0");
montageSettings.shadow(true);
montageSettings.backgroundColor(color);
montageSettings.tile( "3x1" );
list<Magick::Image> montagelist;
Magick::montageImages( &montagelist, sourceImageList.begin(), sourceImageList.end(), montageSettings);
// This will give the expected result
Magick::writeImages(montagelist.begin(), montagelist.end(), "d:\\imtest\\Montage\\out.png");
Magick::Blob *b = new Magick::Blob();
// This will throw an exception mentioned above
Magick::writeImages(montagelist.begin(), montagelist.end(), b);
Magick::Image imageFromBlob(*b);
imageFromBlob.write("d:\\imtest\\Montage\\outBlob.png");
}
You should add try/catch blocks for exceptions so that the exception is caught and can be diagnosed (eg print exception to stderr so that "what" string can be seen). 您应该为异常添加try / catch块,以便捕获异常并对其进行诊断(例如,将打印异常打印到stderr,以便可以看到“ what”字符串)。 It is impossible to diagnose an unhandled exception. 无法诊断未处理的异常。
The proper way to deal with exceptions thrown from Magick++ is detailed at [Magick::Exception]. [Magick :: Exception]中详细介绍了处理从Magick ++引发的异常的正确方法。 1 1
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