This preconfiguration can be activated when creating a new Pmg object
and is included in the group: "/ Widgets / Widgets - Charts"
. Creates the PmgFrame
object configured as - Widget Chart - Pie graph.
The preconfiguration creates a PmgFrame
object in the selected panel, a new subobject PmaWebDir
and copies the files Charts.js
and the license text file Chart_Licence.txt
into the Resource
folder in the application..
The link in the PmgFrame
object refers to the html page widget.htm
in the PmaWebDir
object. This request invokes the widget
method in the PmaWebDir.onPageModify
event. This creates an html page with a link to the chart.js
widget library and configures the parameters for the chart to be displayed. At the same time, it requests (at the specified period) the data for displaying, which is provided by the "data
It is necessary to modify the script in the "data"
method so it provides the required application data to be displayed.
Properties, type and parameters for the displayed graph are modified in the "widget"
method and their syntax is available on the widget Web pages:
This widget (chart.js
) was licensed as MIT
at the time this preconfiguration was created. It means that it is unrestricted and freely distributable.
For the widget to work properly in a local application, it is necessary to have WebView2 (Edge) installed in Windows OS.
The component is called Microsoft Edge WebView2 Runtime version Evergreen.
Its use must be enabled in the application's INI file.
See Web browser (/#glob/webbrowser)
These configurators can be set before the preconfiguration is created:
|Object name||Name (identifier) of the Pmg object. It is used to obtain the Pmg object by the PmgObject.Items method.
This configurator sets the initial value of the Name property.
The maximum name length is 30 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics (i.e. national dependent chars), empty string, spaces and the first character must not be a number.
- Creates a PmgFrame object
- Creates the PmaWebDir subobject in the given PmaPanel object
- Inserts the widget files "chart.js" and "Chart_Licence.txt" into the Resource folder.
|Name of the PmaWebDir subobject||Name of the PmaWebDir subobject|
|Name of the widget object||Name of the widget object|