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DATA.1
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Vplugin.h
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1997-02-08
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/*
Vdraft plugin support file - vplugin.h
(C) Copyright 1997 by SoftSource. All rights reserved.
Scott Sherman 1-97...
A Vdraft plugin must export vfLoad.
This file contains definitions of event information
and prototypes for plugin functions that Vdraft can call.
*/
#ifndef VPLUGIN_HPP
#define VPLUGIN_HPP
/*********************************/
/* specific Vdraft plugin events */
/* IPickEvents */
enum vePickEvent
{
vePE_Point, /* a point has been picked */
vePE_Cancel, /* pick was aborted */
vePE_Done, /* Done chosen from popup */
vePE_Properties, /* Properties chosen from popup */
vePE_Undo, /* Undo chosen from popup */
};
/* IPickEvents */
enum veDrawEvent
{
veDE_Done, /* drawing is completely done */
veDE_Cancel, /* drawing has been aborted */
veDE_Pick /* a point has been picked */
};
/* ISelectionEvents */
enum veSelectEvent
{
veSE_Done, /* the user is done selecting objects */
veSE_Cancel /* the user aborted the selection process */
};
/* the add-on id is a unique identifier created at run-time
it should be passed to Vdraft when requesting events
it is passed back to the plugin
*/
typedef long vtAddOnID;
/**************************************/
/* Return values for plugin functions */
enum veReturn
{
veR_OK, /* return to continue */
veR_Unload, /* return if the plugin should be unloaded immediately */
veR_DontUnload = veR_OK
};
/***************************/
/* Vdraft plugin functions */
/* vfLoad is the only function that is required to exist for the plugin to be loaded
it is called when the plugin is first loaded - good time to add commands to Vdraft
*/
veReturn vfLoad(vtAddOnID id);
/* Vdraft is going to end - plugin should return veR_Unload if it isn't busy */
veReturn vfQueryUnload(vtAddOnID id);
/* Vdraft is ending - plugin should do final cleanup */
veReturn vfUnload(vtAddOnID id);
/* IApplicationEvents */
/* the user has selected a plugin-defined command */
veReturn vfCommand(vtAddOnID id, long eventid);
/* IPickEvents::RequestPick */
/* the user has picked a point or done something related to picking a point */
veReturn vfPickEvent(vtAddOnID id, vePickEvent event, double* point, long info);
/* IPickEvents::RequestDraw */
/* the user has generated an event related to drawing an object */
veReturn vfDrawEvent(vtAddOnID id, veDrawEvent event, double* point, short picknumber, long info);
/* ISelectionEvents::RequestSelect or RequestSingleSelect */
/* the user has finished selecting objects */
veReturn vfSelectEvent(vtAddOnID id, veSelectEvent event, long info);
/* the user has asked for help on something provided by the plugin */
veReturn vfHelpEvent(vtAddOnID id, long helptoken);
#endif /* VPLUGIN_HPP */