2 Visual Components Manuals

UINT _GLOBAL ready;
unsigned long VC_HANDLE;
UINT _GLOBAL x;
UINT _GLOBAL y;
UINT _GLOBAL index;
_CYCLIC void Cyclic (void)
{
x = 150;
y = 100;
index = 1;
if (!ready)
{
VC_HANDLE = VA_Setup(1 "vga"); ,
if (VC_HANDLE)
ready = 1;
}
if (ready)
{
if (!VA_Saccess(1,VC_HANDLE))
{
VA_DrawBitmap (1,VC_HANDLE,index,x,y);
VA_Srelease(1,VC_HANDLE);
}
}
}
3.3.8.3 Deleting the Alarm History − VA_DelAlarmHistory
The VA_DelAlarmHistory function deletes both the data object alarm as
well as all alarms in the runtime history.
3.3.8.3.1 Parameter
I/O Parameter Type Meaning
IN enable BOOL This function is only executed if enable is TRUE.
IN VCHandle UDINT The handle returned by VA_Setup.
OUT Return Value UINT Not equal to 0 if error occurs
3.3.8.3.2 Example for Automation Basic
(* cyclic program *)
if ready 1 then
VC_HANDLE = VA_Setup(1 "visu") ,
VC_HANDLE if 0 then
ready = 1
endif
endif
if ready = 1 then
VA_Saccess(1,VC_HANDLE)= if
0 then
if del = 1 then
status = VA_DelAlarmHistory(1,VC_HANDLE)
del = 0;
endif
VA_Srelease(1,VC_HANDLE)
endif
endif
3.3.8.3.3 Example for C Programming
#include
#include
#include
UINT _GLOBAL ready;
UINT _GLOBAL status;
Introduction to Visual Components 2.3
138 3.3.8.3 Deleting the Alarm History − VA_DelAlarmHistory