adding subViews, not showing up

FROM : crucial felix
DATE : Sat Jan 25 20:58:23 2003

hello.

in response to a user action (clicking a button), I'm adding some views
inside
of a SlotView which is a subclass of NSBox.

The SlotView appears, but the num (NSTextField) and slider (NSSlider)
are not
visible.  Using F-Script Anywhere, i can inspect the slot view, and it
has a contentView
which is a simple NSView, which has two subviews: the num and slider.
and they have the correct frame sizes !
but i can't see them.


-(void)makeViewsIn:(SlotView*)slotView
{

    NSRect frame,numFrame,sliderFrame,slice,remain;
    // take a horizontal slice 40.0 tall from the top
    NSDivideRect((NSRect)[slotView
contentBounds],&slice,&remain,40.0,NSMaxYEdge);
   // cut it into two rects
    NSDivideRect(slice,&numFrame,&sliderFrame, 40.0 , NSMinXEdge);

    float initValue = 0.0;
    num = [[[NSTextField alloc] initWithFrame: numFrame] retain];
    [num setFloatValue: initValue];
    [num setTarget: self];
    [num setAction: @selector(numAction:)];

    slider = [[[NSSlider alloc] initWithFrame: sliderFrame] retain];
    [slider setFloatValue: initValue];
    [slider setTarget: self];
    [slider setAction: @selector(sliderAction:)];

   // addToContentView does [[self contentView] addSubview]
    [slotView addToContentView: num];
    [slotView addToContentView: slider];
}

what misconception am I laboring under ?
thanks for any help.

i did a separate test application where this was done at awakeFromNib,
and the
views showed up.  some kind of clue...

-felix
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