modeless dialog box

最新推荐文章于 2021-12-06 20:38:01 发布

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最新推荐文章于 2021-12-06 20:38:01 发布

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分类专栏：嵌入开发文章标签： dialog delete function class

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本文讨论了在实现模式和非模式对话框时应注意的关键点。对于非模式对话框，需要覆盖OnCancel函数并调用DestroyWindow来确保对话框被正确销毁。同时，还需要覆盖PostNcDestroy函数以便于清理资源。

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When you implement a modeless dialog box, always override the OnCancel member function and call DestroyWindow from within it. Don't call the base class CDialog::OnCancel, because it calls EndDialog, which will make the dialog box invisible but will not destroy it. You should also override PostNcDestroy for modeless dialog boxes in order to delete this, since modeless dialog boxes are usually allocated with new. Modal dialog boxes are usually constructed on the frame and do not need PostNcDestroy cleanup.