Fwd: Drawing in custom views
Fwd: Drawing in custom views
- Subject: Fwd: Drawing in custom views
- From: David Hill <email@hidden>
- Date: Sat, 24 Dec 2005 14:09:43 -0800
Hi all,
I am a comparative newbie, though I came to Xcode via NeXT.
I am porting some of the NeXT software we originally developed at
Trillium Sound Research (but now out under a GPL as "gnuspeech"). In
creating a custom GUI widget, I have been unable to make images
appear in my custom views. My implementation of the example in
Scott's book Chapter 13 determinedly hides the stuff I put in the
image cache -- nothing seems to make it appear in the application
window (which is mostly occupied by the [invisible] custom view) and
certainly not [myImageCache draw], which is the method in the
example. Changing the custom view size and various other measures
reveal nothing.
I set up a simpler test app involving adjusting the size of a new
filled rectangle using a mouse drag. If I offset the filled
rectangle I wish to manipulate slightly away from the filled custom
view I've created in the window, it is clearly drawing correctly and
is visible *outside* the custom view, clipped by the view, and I can
vary its size using the mouse. But, again, nothing seems to work to
allow anything to appear in the custom view itself, including setting
the custom view fill to (NSColor) clearColor or setting it to any
color having a low or zero alpha value.
It is seems that I am missing something very simple, and I would
certainly appreciate a pointer or two. I am using Xcode 2.2 running
under 10.4.3 on a G5.
Many thanks.
david
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