vp_data
Method call snippet
vp_data(instance, attr, length);Return the value of a data attribute.
Parameters
These are the parameters that this method requires:
| Parameter | Usage |
|---|---|
VPInstance instance |
Pointer to the instance this method call is intended for |
vp_data_attribute_t attr |
Attribute to return value of (defined in VP.h) |
int* length |
Returns length of the data |
Returns
The value of the attribute.
Behavior
If the data attribute has not been set, then NULL will be returned and length is set to 0. If an invalid identifier is passed for attr, then NULL will be returned and length will not be set.
Caveats
This returns a pointer to binary data. Not a null-terminated string.
Examples
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