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plug-ins!

NPP_New

Creates a new instance of a plug-in.

Syntax 

#include <npapi.h>
 
NPError NPP_New(NPMIMEType    pluginType,
 
                NPP instance, uint16 mode,
 
                int16 argc,   char *argn[],
 
                char *argv[], NPSavedData *saved);

Parameters

The function has the following parameters: 

pluginType
Pointer to the MIME type for new plug-in instance.
 
instance
Contains instance-specific private data for the plug-in and the browser. This data is stored in instance->pdata.
 
mode

Display mode of plug-in. Values:

  • NP_EMBED: (1) Instance was created by an EMBED tag and shares the browser window with other content.
  • NP_FULL: (2) Instance was created by a separate file and is the primary content in the window. 
argc

Number of HTML arguments in the EMBED tag for an embedded plug-in; determines the number of attributes in the argn and argv arrays. 

argn[]

Array of attribute names passed to the plug-in from the EMBED tag. 

argv[]

Array of attribute values passed to the plug-in from the EMBED tag. 

saved

Pointer to data saved by NPP_Destroy for a previous instance of this plug-in at the same URL. If non-null, the browser passes ownership of the NPSavedData object back to the plug-in. The plug-in is responsible for freeing the memory for the NPSavedData and the buffer it contains.


Returns

  • If successful, the function returns NPERR_NO_ERROR.
  • If unsuccessful, the function returns an error code. For possible values, see Error Codes.

Description

NPP_New creates a new instance of a plug-in. It is called after NP_Initialize and provides the MIME type, embedded or full-screen display mode, and, for embedded plug-ins, information about HTML EMBED arguments.

The plug-in's NPP pointer is valid until the instance is destroyed with NPP_Destroy.

If instance data was saved from a previous instance of the plug-in by the NPP_Destroy function, it is returned in the saved parameter for the current instance to use.

All attributes in the EMBED tag (standard and private) are passed in NPP_New in the argn and argv arrays. The browser ignores any non-standard attributes within an EMBED tag. This gives developers a chance to use private attributes to communicate instance-specific options or other information to the plug-in. Place private options at the end of the list of standard attributes in the EMBED Tag.

See Also

NPP_Destroy, NP_Shutdown, NPP, NPSavedData

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