Iphone 获取CGPoint与应用程序窗口的比较

我有一个桌面视图。我想找到appDelegates窗口的UIImageView的中心

MA_MobileAppDelegate *appDelegate = (MA_MobileAppDelegate *)[[UIApplication sharedApplication] delegate];

            UAModalPanel *modalPanel = [[MSPicturePreview alloc] initWithFrame:appDelegate.window.frame withimage:self.customImageView.image];

            [appDelegate.window addSubview:modalPanel];

            [modalPanel showFromPoint:[appDelegate.window.superview convertPoint:[self.customImageView center] toView:nil]];

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下面的代码在左上角指出了这一点。有没有办法获得窗口上图像的实际点？

试试这样。我想它会起作用的

[modalPanel showFromPoint:[self.view convertPoint:[self.customImageView center] toView:appDelegate.window.superview];

我用过这个

[modalPanel showFromPoint:[self.contentView convertPoint:[self.customImageView center] toView:appDelegate.window]];

基本上，我使用cells contentView转换appDelegates窗口的点