(PowerBuilder) Enable Chilkat Classes in JavaScript

See more JavaScript Examples

Note: This example requires Chilkat v11.4.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_SbJavaScript
oleobject loo_Js
oleobject loo_Result

li_Success = 0

// Chilkat classes within JavaScript are disabled by default.
// An attempt to instantiate a disabled Chilkat class results in a JavaScript exception.

// For example, try the following JavaScript without first enabling the Chilkat class:

// sb = new CkStringBuilder();
// sb.Append('Hello World');
// success = sb.WriteFile('c:/aaworkarea/helloWorld.txt','utf-8',true);

loo_SbJavaScript = create oleobject
li_rc = loo_SbJavaScript.ConnectToNewObject("Chilkat.StringBuilder")
if li_rc < 0 then
    destroy loo_SbJavaScript
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_SbJavaScript.Append("sb = new CkStringBuilder(); sb.Append('Hello World'); success = sb.WriteFile('c:/aaworkarea/helloWorld.txt','utf-8',true);")

loo_Js = create oleobject
li_rc = loo_Js.ConnectToNewObject("Chilkat.Js")

loo_Result = create oleobject
li_rc = loo_Result.ConnectToNewObject("Chilkat.JsonObject")

loo_Result.EmitCompact = 0

// Run the script.  This should result in an error because we haven't enabled the Chilkat CkStringBuilder class.
li_Success = loo_Js.Eval(loo_SbJavaScript,loo_Result)
if li_Success = 0 then
    // Examine the result for an exception.
    Write-Debug loo_Result.Emit()

    // The result contains this:
    // {
    //   "exception": {
    //     "message": "Cannot create the chilkat object because the chilkat class is disabled in JavaScript. Fix by calling SetCkPermission before calling Eval or CallFunction",
    //     "stack": [
    //       {
    //         "func": "CkStringBuilder"
    //       },
    //       {
    //         "func": "<eval>",
    //         "file": "<input>",
    //         "line": 1,
    //         "col": 9
    //       }
    //     ]
    //   }
    // }

end if

// Enable the Chilkat CkStringBuilder JavaScript class for readWrite
loo_Js.SetCkPermission("CkStringBuilder","readWrite")
// The script should work now...
li_Success = loo_Js.Eval(loo_SbJavaScript,loo_Result)
Write-Debug "success = " + string(li_Success)

// If the CkStringBuilder class is enabled for readOnly or sandbox, then it will fail.
//   - Chilkat methods that could directly or indirectly write to the filesystem require writeOnly or readWrite access.
//   - Chilkat methods that read the local filesystem require readOnly or readWrite access.
//   - Chilkat methods that don't interact with the local filesystem work in any mode including sandbox.
loo_Js.SetCkPermission("CkStringBuilder","readOnly")
li_Success = loo_Js.Eval(loo_SbJavaScript,loo_Result)
if li_Success = 0 then
    // Examine the result for an exception.
    Write-Debug loo_Result.Emit()

    // {
    //   "exception": {
    //     "message": "failed because this Chilkat method requires the writeOnly or readWrite permission",
    //     "stack": [
    //       {
    //         "func": "WriteFile"
    //       },
    //       {
    //         "func": "<eval>",
    //         "file": "<input>",
    //         "line": 1,
    //         "col": 67
    //       }
    //     ]
    //   }
    // }
end if



destroy loo_SbJavaScript
destroy loo_Js
destroy loo_Result