Hamish, Your tip was right.
QWindow::fromWinId is expecting a NSView: plugins/platforms/cocoa/qcocoawindow.mm: NSView *foreignView = (NSView *)WId(tlw->property("_q_foreignWinId").value<WId>()); But what I’m giving is a Carbon WindowRef. I have found code to make an NSWindow from WindowRef: You can create an NSWindow object for a Carbon window by allocating an NSWindow object and then initializing the object using the initWithWindowRef: method, as shown in the following line of code: cocoaFromCarbonWin = [[NSWindow alloc] initWithWindowRef:window]; Do you think is my responsibility to create the NSWindow and then the NSView to provide to fromWinId? Thanks, Regards, Nuno > On 04/06/2015, at 09:34, Hamish Moffatt <ham...@risingsoftware.com> wrote: > > On 04/06/15 17:44, Nuno Santos wrote: >> Hi, >> >> Unfortunately this technic doesn’t seem to be working on Mac. Not sure if >> this is a BUG. >> >> It is able to create the QQuickView, but as soon as it instantiates >> QQuickView, it crashes: >> >> if (!window) >> { >> window = QWindow::fromWinId((WId)ptr); // line that causes the crash >> >> >> ... >> >> 2015-06-04 08:38:37.892 Live[88624:8396551] -[NSHIObject >> setPostsFrameChangedNotifications:]: unrecognized selector sent to instance >> 0x1b333860 >> >> Does this say something to anyone? >> > > "unrecognized selector" means a method was called that doesn't exist. Or more > likely, the object you passed to fromWinId was not the type that the Cocoa > platform plugin expected. > > The platform plugin is expecting an NSView*, and maybe what you have is an > NSWindow*. (I don't know much about Cocoa.) Or maybe it's not a Cocoa window > at all? > > > Hamish
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