Add back CallingConvention.Cdecl to PInvokes.

src/CodeGenerator/Program.cs

@@ -461,12 +461,12 @@ namespace CodeGenerator
 
                         if (isUdtVariant)
                         {
-                            writer.WriteLine($"[DllImport(\"cimgui\", EntryPoint = \"{exportedName}\")]");
+                            writer.WriteLine($"[DllImport(\"cimgui\", CallingConvention = CallingConvention.Cdecl, EntryPoint = \"{exportedName}\")]");
 
                         }
                         else
                         {
-                            writer.WriteLine("[DllImport(\"cimgui\")]");
+                            writer.WriteLine("[DllImport(\"cimgui\", CallingConvention = CallingConvention.Cdecl)]");
                         }
                         writer.WriteLine($"public static extern {ret} {methodName}({parameters});");
                     }

src/ImGui.NET/ImGui.NET.csproj

@@ -8,7 +8,7 @@
     <DebugType>portable</DebugType>
     <AssemblyName>ImGui.NET</AssemblyName>
     <PackageId>ImGui.NET</PackageId>
-    <PackagePrereleaseIdentifier>-beta0</PackagePrereleaseIdentifier>
+    <PackagePrereleaseIdentifier>-beta1</PackagePrereleaseIdentifier>
     <PackageVersion>$(AssemblyVersion)$(PackagePrereleaseIdentifier)</PackageVersion>
     <PackageTags>ImGui ImGui.NET Immediate Mode GUI</PackageTags>
     <PackageProjectUrl>https://github.com/mellinoe/imgui.net</PackageProjectUrl>