_DeActivateIdle( ) API Library Routine Example
The following example activates an idle event handler when the library is loaded. The idle event handler simply prints a message and is deactivated when the library is unloaded. As in the following example, _DeActivateIdle( ) is usually called from a CALLONUNLOAD function.
SET LIBRARY TO DEACTIDL
#include <pro_ext.h>
static unsigned IdlerID;
// This is the routine that is registered as an idle event handler.
void FAR IdleHandler(WHandle wh, EventRec *ev)
{
_PutStr("\nIdleHandler() called.");
}
void FAR Activate(ParamBlk FAR *parm)
{
IdlerID = _ActivateIdle((FPFI) IdleHandler);
}
// When the library is unloaded we must deactivate the idle event
// handler in a CALLONUNLOAD function.
void FAR DeActivate(ParamBlk FAR *parm)
{
_DeActivateIdle(IdlerID);
}
FoxInfo myFoxInfo[] = {
{"ACTIVATE", (FPFI) Activate, CALLONLOAD, ""},
{"DEACTIVATE", (FPFI) DeActivate, CALLONUNLOAD, ""}
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};