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Retrieve one resource value for an application
#define PtAppGetResources(type, value, len)
- type
- The resource manifest (E.G Pt_CB_APP_EXIT).
- value
- The address of a pointer to the appropriate data type (see
the “New resources” tables in the Photon Widget Reference).
- len
- Depends on the resource type.
ph
This macro sets a pointer to a resource value within the application.
PtAppGetResource() doesn't support the nonpointer
method of getting resources. For more information, see the
Manipulating Resources
in Application Code chapter of the Photon Programmer's Guide. For
a list of application callbacks, see
PtAppSetResources().
|
Because PtAppGetResource() returns pointers
directly into the internals of the widget, don't modify those values
directly. If you wish to retrieve the value of a given resource
and then modify that value:
- Get the resource.
- Copy the resource to a temporary variable.
- Modify the temporary variable.
- Using the modified copy, set the resource.
|
- 0
- Success.
- -1
- An error occurred.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PtAppAddCallback(),
PtAppGetResources(),
PtAppRemoveCallback(),
PtAppSetResources(),
PtAppSetResource(),
PtSetArg().
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