GUI Value Retrieval

## Command 0xac: Get GUI Variable

ubyte | string
--- | ---
Variable | View ID

Asks for the value of a certain GUI variable. The view id is usually something like "View #0", where the last digit counts the open (sub-)windows in the simulation GUI. The id is shown in the view title-bar when un-maximizing the view subwindow (this happens automatically when opening a new view).

The following variable values can be retrieved, the type of the return value is also shown in the table.

Overview Retrievable GUI Variables

Variable | ValueType | Description | Python Method
--- | --- | --- | ---
zoom (0xa0) | double | the current zoom level (in %) | getZoom
offset (id 0xa1) | 2D-position | the center of the currently visible part of the net | getOffset
schema (id 0xa2) | string | the visualization scheme used (e.g. "standard" or "real world") | getSchema
boundary (id 0xa3) | 2D-polygon | the lower left and the upper right corner of the visible network | getBoundary
has view (id 0xa7) | bool | Whether a view with the given ID exists | hasView

## Response 0xbc: GUI Variable

ubyte | string | ubyte | <return_type>
--- | --- | --- | ---
Variable | View ID | Return type of the variable | <VARIABLE_VALUE>

The respond to a "Command Get GUI Variable".

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