I would like to create a transparent window that spans all the screens and
that handles mouse down events. Below is the code that I use to create my
transparent window. The transparent window gets created and display
successfully. However, mouse down events are not directed to the window. I
can see where this feature is desirable. For example making a round window.
However, not in my case.
Is there a way that I can setup a transparent window to receive mouse down
events?
Note: I have found that if I set the window's background color alpha value to
0.05 or greater I will receive mouse down events. However this little amount
of alpha causes some color shift in the background image.
- (id)init
{
NSRect rect = [[NSScreen mainScreen] frame];
// get the union of all the screens
for (NSScreen* s in [NSScreen screens])
{
rect = NSUnionRect(rect,[s frame]);
}
self = [super initWithContentRect:rect styleMask:NSBorderlessWindowMask
backing:NSBackingStoreRetained defer:YES];
if (self)
{
[self setBackgroundColor:[NSColor clearColor]];
[self setOpaque:NO];
}
return self;
}
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