I am using a field to report the position of a slider in my application.
The problem I am having is that the field doesn't seem to refresh
itself to the new value. Unless you HIGHLIGHT the field, then the new
value will be displayed! Also, not all of the old data is erased when
the new value is shown. I am showing a value ranging from 0 to 40.
Example:
Cursor is moved to position 10, the field is highlighted, then the
display changes from "00" to "10". Next I move the cursor 1 position
back (9), the display still says "10" until I highlight it, at which
point it displays "90". I even tried writing " " (2 blanks) to the
field before the new data.
Here is my code...
if(Refresh == true)
{
WriteNumberToField(Vehicle.CH[ActiveChannel].VOLUMELEVEL,
1014);
}
switch (pEvent->eType) {
case ctlSelectEvent:
switch (pEvent->data.ctlSelect.controlID)
{
case 1015:
ControlPtr =
FrmGetObjectPtr(pForm, FrmGetObjectIndex(pForm, 1015)); // Get slider
position
Vehicle.CH[ActiveChannel].VOLUMELEVEL = CtlGetValue(ControlPtr);
WriteTextToField("
", 1014); // MAKES NO DIFFERENCE!!!!
WriteNumberToField(Vehicle.CH[ActiveChannel].VOLUMELEVEL, 1014);
break;
}
}
The first time this form handler is called, Refresh = true so the field
(1014) is refreshed. WriteNumberToField converts the INT (1st param) to
a string, then displays that string in the field (1014). This function
works fine and is shown below in case interested. Each time the slider
(1015) is moved, its new value is stored in
Vehicle.CH[ActiveChannel].VOLUMELEVEL and should be displayed to field
1014.
anyone had this happen to them before?
thanks,
~Tony
// WRITENUMBERTOFIELD FUNCTION
static void WriteNumberToField(UInt8 data, UInt16 controlID)
{
FormType* pForm;
FieldType* FieldPtr;
MemHandle h, oldHandle;
char *p;
pForm = FrmGetActiveForm();
h = MemHandleNew(50); // allocate chunk of memory in
heap
p = MemHandleLock(h); // prevent the chunk from moving
(lock) and obtain pointer to location
StrIToA(p, data);
MemHandleResize(h, StrLen(p)+1);
MemHandleUnlock(h);
FieldPtr = FrmGetObjectPtr(pForm, FrmGetObjectIndex(pForm,
controlID));
oldHandle = FldGetTextHandle(FieldPtr);
FldSetTextHandle(FieldPtr, h);
if(oldHandle)
MemHandleFree(oldHandle);
}
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