Does anybody know if there is a Qt widget that simulates this effect?
What I want to do is when the user inputs some data and th开发者_JAVA技巧ese data are invalid, this bubble appears and tell to user 'hey, there is an error here!'
Well, I would use a frameless (setting Qt::FramelessWindowHint) QDialog with a custom painting.
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It seems to me Apple won\'t allow this, but I need to make sure. For an app we\'re building, we want to ask the user to enter payment information (including credit card details) to pay for tickets. T
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是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
微信重新建群怎么开发者_Go百科建？ 产品名称：苹果手机 产品型号：iPhone 11 系统版本：iOS 13
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