Class

# ThreadAccessingUIException

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## Description

Occurs when a thread accesses the user interface.

## Properties

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| Name                                                  | Type                               | Read-Only | Shared |
|-------------------------------------------------------|------------------------------------|-----------|--------|
| `ErrorNumber<threadaccessinguiexception.errornumber>` | `Integer</api/data_types/integer>` |           |        |
| `Message<threadaccessinguiexception.message>`         | `String</api/data_types/string>`   |           |        |

## Methods

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| Name                                                   | Parameters                                                                                              | Returns                                    | Shared |
|--------------------------------------------------------|---------------------------------------------------------------------------------------------------------|--------------------------------------------|--------|
| `Constructor<threadaccessinguiexception.constructor0>` | message As `String</api/data_types/string>` = "", errorNumber As `Integer</api/data_types/integer>` = 0 |                                            |        |
| `Stack<threadaccessinguiexception.stack>`              |                                                                                                         | `String()</api/data_types/string>`         |        |
| `StackFrames<threadaccessinguiexception.stackframes>`  |                                                                                                         | `StackFrame()</api/exceptions/stackframe>` |        |

## Property descriptions

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ThreadAccessingUIException.ErrorNumber

**ErrorNumber** As `Integer</api/data_types/integer>`

> Used to contain an error number that describes the runtime error.

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ThreadAccessingUIException.Message

**Message** As `String</api/data_types/string>`

> Used to contain descriptive text to display when the runtime exception is encountered.

## Method descriptions

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ThreadAccessingUIException.Constructor

**Constructor**(message As `String</api/data_types/string>` = "", errorNumber As `Integer</api/data_types/integer>` = 0)

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> `Constructors</api/language/constructor>` are special methods called when you create an object with the `New</api/language/new>` keyword and pass in the parameters above.
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> Used to raise your own `RuntimeException</api/exceptions/runtimeexception>` with a *message* and optional error number.

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ThreadAccessingUIException.Stack

**Stack** As `String()</api/data_types/string>`

> Returns a `String</api/data_types/string>` array that contains a list of all of the methods in the stack from the main entrypoint to the point at which the exception was invoked.
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> The stack contains all the method names up and including the current method name.
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> This feature only works if the **IncludeFunctionNames** property on the App object is selected in the Shared Build Settings.
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> In addition to your own method calls, you will also see framework method calls, but these may not always be completely accurate due to insufficient symbols for the OS to resolve.

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ThreadAccessingUIException.StackFrames

**StackFrames** As `StackFrame()</api/exceptions/stackframe>`

> Returns an array containing the stack when the exception was first raised.

## Notes

Accessing the user interface refers to anything that could change the display of the user interface.

You can access your own methods and properties on `Windows</api/user_interface/desktop/desktopwindow>` and other controls as long as the property does not result in a change to the user interface.

## Compatibility

|                       |                                |
|-----------------------|--------------------------------|
| **Project Types**     | Console, Desktop, Mobile, Web  |
| **Operating Systems** | Android, Linux, macOS, Windows |

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`RuntimeException</api/exceptions/runtimeexception>` parent class; `Thread</api/language/threading/thread>`

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