如何让 QFileDialog 提示覆盖？

发布于 2025-01-05 08:35:53 字数 1282 浏览 1 评论 0原文

我有一个 QDialog，可以像这样打开 QFileDialog：

QFileDialog fd(this);
fd.setFileMode(QFileDialog::AnyFile);

if (fd.exec()) {
    // save data to a file
}

不幸的是，默认行为似乎并不那么默认，并且如果我选择已经存在的文件，文件对话框不会提示我覆盖。调用 setConfirmOverwrite(true)< /a> 或 setOption(QFileDialog::DontConfirmOverwrite, false) 首先也没有帮助。我已经在 Ubuntu 11.04 和 Windows XP 上的 Qt 4.7.3 和 4.7.4 上进行了测试。

我环顾四周，发现了此错误报告。 QFileDialog::getSaveFileName() 有这个问题，但它是 Maemo 特有的，并且在 Qt 4.7.3 发布之前就已修复。如果我在应用程序中使用该方法，它工作得很好，系统会提示我覆盖该文件。（出于不相关的原因，我不想使用 getSaveFileName() 。）

我找不到其他人抱怨这对他们不起作用。我做错了什么，还是这是一个错误？我认为这可能是由于对话框不知道它是否只是一个简单的打开对话框，其中提示没有意义，但我没有找到一种方法来告诉它它是一个保存对话框（除了设置确认覆盖选项之外，失败），并且文档确实说它应该默认提示。

原文

I have a QDialog that opens a QFileDialog like so:

QFileDialog fd(this);
fd.setFileMode(QFileDialog::AnyFile);

if (fd.exec()) {
    // save data to a file
}

Unfortunately, the default behavior doesn't seem to be quite so default, and the file dialog doesn't prompt me about overwriting if I select a file that already exists. Calling setConfirmOverwrite(true) or setOption(QFileDialog::DontConfirmOverwrite, false) first doesn't help either. I've tested this both on Qt 4.7.3 and 4.7.4 on both Ubuntu 11.04 and Windows XP.

I looked around and found this bug report. QFileDialog::getSaveFileName() had this issue, but it was specific to Maemo and fixed well before Qt 4.7.3 came out. If I use that method in my application it works just fine, I get prompted about overwriting the file. (I don't want to use getSaveFileName() for unrelated reasons.)

I can't find anyone else complaining about this not working for them. Am I doing something wrong, or is this a bug? I think it might be due to the dialog not knowing whether it's just a simple Open dialog where prompting wouldn't make sense, but I don't see a way to tell it it's a Save dialog (beyond setting the confirm-overwrite option, which fails), and the documentation does say it should prompt by default.

分享到QQ

分享到微博