Hi, what I'm trying to do is have Cocoa UI elements with custom
coloring for something of a "negative" look (light text on dark
background), and the colors will need to change programatically
during the program run. This works fine for things like NSTextFields
where I can just set the background color to match my background or
have them not draw the background so my background shows through. But
I've run into a problem with NSPopUpButton. I'm using the style with
"Bordered" unchecked in IB (it's flat and looks like an NSTextField
when not popped up). By using this code I can correctly color the
text for the menu item elements:
// must add to popup menu directly because [NSPopUpButton addItem:]
method removes duplicates
NSMutableAttributedString *coloredTitle = [[NSMutableAttributedString
alloc] initWithString:[[newSequenceItem sourceTrack] readableName]];
[coloredTitle value:
[NSColor whiteColor] range:NSMakeRange(0, [coloredTitle length])];
NSMenuItem *newItem = [[NSMenuItem alloc] initWithTitle:
[[newSequenceItem sourceTrack] readableName] action:nil
keyEquivalent:@""];
[newItem ];
[[trackNamesPopUp menu] addItem:newItem];
So this works great, EXCEPT I still have the light pinstripey
background under the text when I click on the button to pop up the
list. I can't find any way to get ahold of the view that gets popped-
up when the button is clicked on, nor any of the menu item view
rectangles (NSMenuItems and NSMenu are subclasses of NS, not
NSView subclasses). I thought I could make it work by adding this line:
[coloredTitle value:
[NSColor darkGrayColor] range:NSMakeRange(0, [coloredTitle length])];
but when I do, the app crashes. not when the line is called, but when
the popup button is clicked on for the first time. Here is the error
text with the crash:
2005-08-17 16:29:55.106 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x662b990]
2005-08-17 16:29:55.106 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x662b990]
2005-08-17 16:29:55.107 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b6be0]
2005-08-17 16:29:55.108 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b6be0]
2005-08-17 16:29:55.114 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b78c0]
2005-08-17 16:29:55.114 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b78c0]
2005-08-17 16:29:55.115 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b8c90]
2005-08-17 16:29:55.115 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b8c90]
2005-08-17 16:29:55.121 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b9ae0]
2005-08-17 16:29:55.121 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60b9ae0]
2005-08-17 16:29:55.123 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60ba810]
2005-08-17 16:29:55.123 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60ba810]
2005-08-17 16:29:55.126 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.127 Stinger[25650] -[_NSExistingCGSContext
window]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.129 Stinger[25650] -[_NSExistingCGSContext
focusView:inWindow:]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.132 Stinger[25650] -[_NSExistingCGSContext
focusView:inWindow:]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.132 Stinger[25650] -[_NSExistingCGSContext
popTopView]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.132 Stinger[25650] An uncaught exception was raised
2005-08-17 16:29:55.133 Stinger[25650] -[_NSExistingCGSContext
popTopView]: selector not recognized [self = 0x60bb990]
2005-08-17 16:29:55.133 Stinger[25650] Uncaught exception:
<NSInvalidArgumentException-[_NSExistingCGSContext popTopView]:
selector not recognized [self = 0x60bb990]
Stinger has exited due to signal 5 (SIGTRAP).
Now, what is interesting is that my popup button text does initially
appear with the correct dark-grey background. So the line adding the
background attribute does work. But when the button is clicked on, it
barfs, as you can see. Bug? Bottom line is that I just want to be
able to color both the text foreground and background as I like in an
NSPopupButton, including in the popped-up view, so what's the best
way to do that? I'd also like to color the little "up/down" arrows
the same color as the foreground (text) if possible. Thanks in
advance if you can help!
- Ben
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