的Visual Studio 2013和libpng [英] Visual Studio 2013 and libpng

问题描述

我想写使用VS2013使用C中的libpng一个简单的PNG文件。从我安装的NuGet的libpng，其中包括png.h，但我不能编译。我得到这个作为我的输出：

I'm trying to write a simple PNG file using libpng in C using VS2013. I installed libpng from Nuget and included png.h, but I can't compile. I get this as my output:

1>main.obj : error LNK2019: unresolved external symbol png_create_write_struct referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_set_longjmp_fn referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_create_info_struct referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_write_info referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_destroy_write_struct referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_init_io referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_free_data referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_set_IHDR referenced in function writeImage
1>main.obj : error LNK2019: unresolved external symbol png_set_text referenced in function writeImage

我试着编译设置打，但似乎没有任何使其工作。我不明白在任何时候那些我写的code声明的任何红线，所以VS必须看到一些code的。

I've tried playing with the compilation settings, but nothing seems to make it work. I don't get any red lines under any of those declarations when I write the code, so VS must be seeing some of the code.

推荐答案

此外，包括 png.h 您还必须用适当的导入库（可能称为链接 libpng.lib 或类似的东西）。在Visual Studio中，可以添加这的项目设置→连接器→输入→附加依赖的

Besides including png.h you must also link with the appropriate import library (probably called libpng.lib or something similar). In Visual Studio, you would add this to Project Settings → Linker → Input → Additional Dependencies.

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