The desire is to have a bordered, movable, resizable window with a "hollow"
interior--hollow meaning that the user can both see through the content area
(transparent) and any mouse/keyboard events are sent to whatever
window/application is below.
This was easily accomplished prior to OS X 10.7 Lion by simply having an
NSWindow/NSPanel with a transparent background.
With OS X Lion, even when the window background is transparent, the window
still receives the mouse events.
I have determined that this is related to whether or not the Window is
resizable. If the window is resizable, the mouse events are handled by the
Window. If it is NOT resizable, the events in the transparent areas are NOT
handled by the window.
NSRect windowRect = NSMakeRect( 200, 200, 200, 200 );
NSPanel hollowWindowResizable = [[NSPanel alloc]
initWithContentRect:windowRect styleMask:(NSHUDWindowMask |
NSNonactivatingPanelMask | NSTitledWindowMask | NSResizableWindowMask |
NSUtilityWindowMask | NSClosableWindowMask) backing:NSBackingStoreBuffered
defer:NO];
[hollowWindowResizable setBackgroundColor:[NSColor clearColor]];
[hollowWindowResizable setReleasedWhenClosed:YES];
[hollowWindowResizable setTitle:@"Resizable"];
[hollowWindowResizable setFloatingPanel:YES];
[hollowWindowResizable setCanHide:NO];
[hollowWindowResizable setOpaque:YES];
[hollowWindowResizable setHasShadow:NO];
//[hollowWindowResizable setIgnoresMouseEvents:TRUE];
[hollowWindowResizable makeKeyAndOrderFront:nil];
My guess is that this is a bug introduced with Lion's ability to resize a
window from any edge.
Anyone have any ideas?
Thanks,
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