System.Drawing單聲道故障調試

Question

根據有關mono-test-install結果失敗的答案 ，我將以下內容放在test.cs ：

using System;
using System.Drawing;

class X { 
    static void Main ()
    {
        Bitmap b = new Bitmap (100, 100);
    }
}

然后跑了

mcs -pkg:dotnet test.cs

輸出：

test.cs（7,16）：警告CS0219：變量“b”已分配，但其值從未使用編譯成功 - 1個警告

然后運行生成的exe：

mono test.exe

輸出：

Unhandled Exception:
System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: /usr/local/lib/libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int)
  at X.Main () [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: /usr/local/lib/libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int)
  at X.Main () [0x00000] in <filename unknown>:0 

忽略這個是安全的還是我應該調試NotFoundException: /usr/local/lib/libgdiplus.so行NotFoundException: /usr/local/lib/libgdiplus.so next？

Answer 1

謝謝Jon，我剛剛找到那個頁面，雖然我沒有逐字逐句，但我把符號鏈接放在：

sudo ln -s /usr/lib/libgdiplus.so /usr/local/lib/libgdiplus.so

這解決了錯誤，現在mono-test-install返回：

你有一個工作System.Drawing設置

除語法問題外，還應該解決。