PowerUI == simple onclick event

Question

Hi,

I'm trying to use PowerUI with the JavaScript Jint to make a button clickable, very simple in regular HTML:

 PowerUI.UI.Html = ( "<!doctype html><html><head><style>body,html{background:green; color:black;}</style></head><body>var b= document.createElement('b'); b.innerHTML = 'CLICK me maybe'; b.onclick=function(e,u) {console.log(234);}; document.body.appendChild(b);</body></html>");

If I just use reuglar HTML (without Jint) and say .... works fine, only when assigning b.onclick = function(){}, do I get an error:

 JavaScript compile error  (At resources://): System.ArgumentException: Object of type 'System.Func`2[PowerUI.MouseEvent,System.Object]' cannot be converted to type 'System.Action`1[PowerUI.MouseEvent]'.
   at System.RuntimeType.CheckValue (System.Object value, System.Reflection.Binder binder, System.Globalization.CultureInfo culture, System.Reflection.BindingFlags invokeAttr) [0x00071] in <23c160f925be47d7a4fd083a3a62c920>:0 
   at System.Reflection.MonoMethod.ConvertValues (System.Reflection.Binder binder, System.Object[] args, System.Reflection.ParameterInfo[] pinfo, System.Globalization.CultureInfo culture, System.Reflection.BindingFlags invokeAttr) [0x00069] in <23c160f925be47d7a4fd083a3a62c920>:0 
   at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00011] in <23c160f925be47d7a4fd083a3a62c920>:0 
   at System.Reflection.MonoProperty.SetValue (System.Object obj, System.Object value, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] index, System.Globalization.CultureInfo culture) [0x0005d] in <23c160f925be47d7a4fd083a3a62c920>:0 
   at System.Reflection.PropertyInfo.SetValue (System.Object obj, System.Object value, System.Object[] index) [0x00000] in <23c160f925be47d7a4fd083a3a62c920>:0 
   at Jint.Runtime.Descriptors.Specialized.PropertyInfoDescriptor.set_Value (Jint.Native.JsValue value) [0x00074] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\Descriptors\Specialized\PropertyInfoDescriptor.cs:47 
   at Jint.Runtime.Interop.ObjectWrapper.Put (System.String propertyName, Jint.Native.JsValue value, System.Boolean throwOnError) [0x00061] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\Interop\ObjectWrapper.cs:50 
   at Jint.Engine.PutValue (Jint.Runtime.References.Reference reference, Jint.Native.JsValue value) [0x0005f] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Engine.cs:592 
   at Jint.Runtime.ExpressionInterpreter.EvaluateAssignmentExpression (Jint.Parser.Ast.AssignmentExpression assignmentExpression) [0x000ab] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\ExpressionIntepreter.cs:61 
   at Jint.Engine.EvaluateExpression (Jint.Parser.Ast.Expression expression) [0x00099] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Engine.cs:444 
   at Jint.Runtime.StatementInterpreter.ExecuteExpressionStatement (Jint.Parser.Ast.ExpressionStatement expressionStatement) [0x00001] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\StatementInterpreter.cs:33 
   at Jint.Engine.ExecuteStatement (Jint.Parser.Ast.Statement statement) [0x001ca] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Engine.cs:391 
   at Jint.Runtime.StatementInterpreter.ExecuteStatement (Jint.Parser.Ast.Statement statement) [0x00001] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\StatementInterpreter.cs:23 
   at Jint.Runtime.StatementInterpreter.ExecuteStatementList (System.Collections.Generic.IEnumerable`1[T] statementList) [0x00029] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\StatementInterpreter.cs:425 
   at Jint.Runtime.StatementInterpreter.ExecuteProgram (Jint.Parser.Ast.Program program) [0x00001] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Runtime\StatementInterpreter.cs:503 
   at Jint.Engine.Execute (Jint.Parser.Ast.Program program) [0x00051] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Engine.cs:322 
   at Jint.Engine.Execute (System.String source) [0x00007] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\Jint\Engine.cs:302 
   at PowerUI.JavaScriptEngine.Compile (System.String source) [0x0001a] in C:\Users\eivan\OneDrive\Documents\unitys\project\Achdus\Assets\PowerUI\Source\JavaScript\JavaScriptEngine.cs:213 
 UnityEngine.Debug:Log(Object)
 PowerUI.UI:OnLogMessage(String) (at Assets/PowerUI/Source/Engine/UI.cs:430)
 Dom.Log:Add(String) (at Assets/PowerUI/Source/Dom/Log.cs:34)
 PowerUI.JavaScriptEngine:Compile(String) (at Assets/PowerUI/Source/JavaScript/JavaScriptEngine.cs:237)
 PowerUI.ScriptEngine:TryCompile() (at Assets/PowerUI/Source/Engine/Script Engines/ScriptEngine.cs:163)
 PowerUI.HtmlDocument:TryCompile() (at Assets/PowerUI/Source/Engine/Document/Document-Scripting.cs:98)
 PowerUI.HtmlDocument:close() (at Assets/PowerUI/Source/Engine/Document/Document.cs:297)
 PowerUI.HtmlDocument:set_innerHTML(String) (at Assets/PowerUI/Source/Engine/Document/Document.cs:697)
 PowerUI.UI:set_Html(String) (at Assets/PowerUI/Source/Engine/UI.cs:715)
 Achdus.Yaakov:CompileJavaScript(String) (at Assets/COBY.cs:323)
 COBY:Start() (at Assets/COBY.cs:311)

This also happens when I try to pass other functions as arguments etc....

does anyone know a fix for this, possibly involving the powerUI source code?

Answer 1

Answer by Bunny83 · May 10, 2019 at 11:39 AM

 System.ArgumentException: Object of type 'System.Func`2[PowerUI.MouseEvent,System.Object]' cannot be converted to type 'System.Action`1[PowerUI.MouseEvent]'.

You try to assign a delegate / method with two parameter to an event handler which takes only one. This should fix it:

 b.onclick=function(e) {console.log(234);};

Though i have to say i never used PowerUI. So this is purely based on the provided error message.

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