Difference between revisions of "Extensions.HMI.Screen"
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m (Hb moved page Screen to Extensions.HMI.Screen: #3153) |
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{{DISPLAYTITLE:Data Type '''Screen'''}}[[Category:DataType]][[Category:HMI]] | {{DISPLAYTITLE:Data Type '''Screen'''}}[[Category:DataType]][[Category:HMI]] | ||
== Classification == | == Classification == | ||
| − | {{ClassificationDataType | Screen | A handle to a screen resource to the runtime system | [[Complex Data Type]] | | + | {{ClassificationDataType | Screen | A handle to a screen resource to the runtime system | [[Core.DataTypes.ComplexDataType|Complex Data Type]] | [[Core.DataTypes.ComplexDataType.ComplexType|ComplexType]] }} |
== Description == | == Description == | ||
| Line 11: | Line 11: | ||
String=Returns the name of the screen resource | StringSample=<tt>String s = ToString(screenVariable); // Returns "ScreenSignatureName"</tt> | String=Returns the name of the screen resource | StringSample=<tt>String s = ToString(screenVariable); // Returns "ScreenSignatureName"</tt> | ||
}} | }} | ||
| + | |||
| + | ==Sample== | ||
| + | <syntaxhighlight lang="java" enclose="div" style="font-size: medium;"> | ||
| + | HMI.Screen ScreenVariable; | ||
| + | </syntaxhighlight> | ||
Latest revision as of 09:39, 22 October 2018
Classification
| Name | Screen |
| Short Description | A handle to a screen resource to the runtime system |
| Class | Complex Data Type |
| Base Data Type | ComplexType |
| Default Value | Empty |
| Provide a Literal | No |
| SpecifiedBy | ISO 13209-3 |
| Standard Compliant | Yes |
Description
The Screen data type is a handle to a screen resource on the runtime system. Screen-Handle provides an interface through which a OTX sequence representing data and can receive user input.
Since screen does not have any initialization parts, one can screen not be declared constant.
Core Conversion
The following table shows the rules for conversion to another data type:
| Conversion | Result | Sample |
| ToBoolean | Undefined (should not be used) | |
| ToInteger | Undefined (should not be used) | |
| ToFloat | Undefined (should not be used) | |
| ToString | Returns the name of the screen resource | String s = ToString(screenVariable); // Returns "ScreenSignatureName" |
| ToByteField | Undefined (should not be used) |
Sample
HMI.Screen ScreenVariable;