buttonRect | 用于决定窗口位置的按钮(请参阅说明)。 |
windowSize | 窗口的初始大小。 |
显示包含下拉菜单和样式的窗口。
窗口的样式与 PopupWindow 相同,这意味着,窗口会在失去焦点时自动关闭,且窗口边缘无框。 请注意,此函数会自动调整窗口以使其适应屏幕,同时尝试先将窗口放置在触发函数的按钮下方,然后再放置在按钮上方。 这意味着,windowSize 可能会在适应屏幕时发生变化,因此您应确保在此之后 读取 'position',以检查窗口大小是否被裁剪。
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