无法打开剪切板(错误 521)

剪贴板已经被其他应用程序打开。 此错误的原因和解决方案如下:

  • Another application is using the Clipboard and won't release it to your application. Set an error trap for this situation in your code and provide a message box with Retry and Cancel buttons to allow the user to try again after a short pause.

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