dev_update_window — Switches the automatic output of iconic output objects into the graphics window during program execution on or off.
dev_update_window( : : DisplayMode : )
dev_update_window specifies whether all iconic objects that are returned by an operator call have to be displayed in the active graphics window (DisplayMode = 'on'---default) or not (DisplayMode = 'off').
This option has no influence on the object output in single step mode. After the execution of a single operator the iconic output objects are always displayed in the active graphics window.
This option should be set to 'off', if only selected objects should to be displayed in the graphics window. In this case the objects should be displayed by dev_display.
For measuring the execution time of a sequence of operators all update options should be switched off in order to reduce the influence of the runtime of GUI updates in HDevelop. For this the operators dev_update_pc, dev_update_time, dev_update_var, and dev_update_window or the procedures dev_update_on and dev_update_off can be used.
This option can also be controlled via the Preferences dialog: Edit -> Preferences -> Runtime Settings -> Update Window.
This operator is not supported for code export.
Mode for graphic output.
Default value: 'off'
List of values: 'off', 'on'
If the values of the specified parameters are correct, dev_update_window returns 2 (H_MSG_TRUE). Otherwise an exception is raised and an error code returned.