Operator Reference
dev_update_var (Operator)
dev_update_var
— Switches the update of the variable window during program execution on or off.
Signature
dev_update_var( : : DisplayMode : )
Description
dev_update_var
specifies the behavior of the variable window
during program execution.
If DisplayMode
is set to 'on' , which is the default,
the contents of the variable window (iconic and control variables)
is updated each time a variable is modified by the program.
If the mode is 'off' the values of the control variables and the icons of the iconic variables are not updated before the execution stops.
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 Variables
.
Attention
This operator is not supported for code export.
Parameters
DisplayMode
(input_control) string →
(string)
Mode for graphic output.
Default: 'off'
List of values: 'off' , 'on'
Result
If the values of the specified parameters are correct,
dev_update_var
returns 2 (
H_MSG_TRUE)
. Otherwise, an
exception is raised and an error code returned.
See also
dev_update_pc
,
dev_update_window
,
dev_update_time
Module
Foundation