FormatMessage 错误消息

最新推荐文章于 2025-08-20 11:48:45 发布

原创最新推荐文章于 2025-08-20 11:48:45 发布 · 363 阅读

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本文介绍了一种在Windows系统中通过使用API函数GetDlgItemInt和FormatMessage获取用户界面上显示的错误代码，并将其转换为对应的错误消息字符串的方法。此过程涉及获取错误代码、设置缓冲区以接收错误消息字符串及调用FormatMessage函数。

	// Get the error code
	DWORD dwError = GetDlgItemInt(IDC_EDIT1);

	HLOCAL hlocal = NULL;   // Buffer that gets the error message string

	// Use the default system locale since we look for Windows messages.
	// Note: this MAKELANGID combination has 0 as value
	DWORD systemLocale = MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL);

	// Get the error code's textual description
	BOOL fOk = FormatMessage(
		FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS |
		FORMAT_MESSAGE_ALLOCATE_BUFFER,
		NULL, dwError, systemLocale,
		(PTSTR) &hlocal, 0, NULL);

	SetDlgItemText(IDC_TEXTOUT,(PTSTR) LocalLock(hlocal));