Difference between revisions of "API Component.GetInstance"
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− | API | + | <sidebar>API Contents</sidebar> |
Gets the type-instance of the component, >= 1 is valid | Gets the type-instance of the component, >= 1 is valid | ||
+ | <div style="width:25%; float:right" class="toc"> | ||
+ | ====Class hierarchy==== | ||
+ | [[API Component|Component]] | ||
+ | :[[API Component|GetInstance]] | ||
+ | </div> | ||
+ | __TOC__ | ||
− | + | ==Parameters== | |
− | + | [[Variable Types|HANDLE]] ''Target'' | |
:The component to read the instance from | :The component to read the instance from | ||
:''The default value for this parameter is: '''''this''' | :''The default value for this parameter is: '''''this''' | ||
− | + | ||
− | [[Variable | + | ==Return value== |
+ | [[Variable Types|ULONG]] | ||
Returns the type-instance of the component, >= 1 is valid | Returns the type-instance of the component, >= 1 is valid | ||
− | |||
− | |||
− | ===Examples | + | ==Detailed description== |
− | + | A components instance is a number referring to how many occurrences of a component exist before this one, including itself. The number is 1 if the component is the first of its type to be added. | |
+ | |||
+ | |||
+ | This instance number is irrespective of the depth of a component - a component of the same type as the ''Target'' is still considered even if it is embedded deep in some other components [[Component Tree|tree]]. | ||
+ | |||
+ | |||
+ | Note this call relies on a match of the components GUID, so built-in component types (such as shapes and groups) do not have an instance and it will return zero. | ||
+ | |||
+ | |||
+ | ==Examples== | ||
+ | ===Calling in a calculation=== | ||
* Declare a variable 'result' of type ULONG | * Declare a variable 'result' of type ULONG | ||
− | * Add to a calculation icon: result = ::Component.GetInstance(target) | + | * Add to a calculation icon: <pre class="brush:[cpp]">result = ::Component.GetInstance(target)</pre> |
+ | |||
+ | ''<span style="color:red;">No additional examples</span>'' |
Latest revision as of 15:57, 16 January 2014
<sidebar>API Contents</sidebar> Gets the type-instance of the component, >= 1 is valid
Contents
Parameters
HANDLE Target
- The component to read the instance from
- The default value for this parameter is: this
Return value
Returns the type-instance of the component, >= 1 is valid
Detailed description
A components instance is a number referring to how many occurrences of a component exist before this one, including itself. The number is 1 if the component is the first of its type to be added.
This instance number is irrespective of the depth of a component - a component of the same type as the Target is still considered even if it is embedded deep in some other components tree.
Note this call relies on a match of the components GUID, so built-in component types (such as shapes and groups) do not have an instance and it will return zero.
Examples
Calling in a calculation
- Declare a variable 'result' of type ULONG
- Add to a calculation icon:
result = ::Component.GetInstance(target)
No additional examples