public static void ShowHelpMsg(string msg)
{
var fmFlags = new FmFlags();
fmFlags.Show();
fmFlags.DrawStr(msg);
}
/// <summary>
/// 获取系统错误信息的描述
/// <para>see <see cref="Marshal.GetLastWin32Error"/></para>
/// <para>封装 <see cref="Kernel32.FormatMessage(FmFlags, IntPtr, uint, uint, ref string, uint, IntPtr)"/></para>
/// </summary>
/// <param name="errorCode">系统错误码</param>
/// <returns></returns>
public static string GetSysErrroMessage(uint errorCode)
{
#if false
string message = null;
FmFlags flags = FmFlags.FORMAT_MESSAGE_ALLOCATE_BUFFER | FmFlags.FORMAT_MESSAGE_IGNORE_INSERTS | FmFlags.FORMAT_MESSAGE_FROM_SYSTEM;
Kernel32.FormatMessage(flags, IntPtr.Zero, errorCode, 0, ref message, 255, IntPtr.Zero);
#else
StringBuilder message = new StringBuilder(255);
FmFlags flags = FmFlags.FORMAT_MESSAGE_IGNORE_INSERTS | FmFlags.FORMAT_MESSAGE_FROM_SYSTEM;
Kernel32.FormatMessage(flags, IntPtr.Zero, errorCode, 0, message, 255, IntPtr.Zero);
#endif
return(message.ToString().Trim());
}
public extern static uint FormatMessage(FmFlags dwFlags, IntPtr lpSource, uint dwMessageId, uint dwLanguageId, StringBuilder lpBuffer, uint nSize, IntPtr Arguments);
public extern static uint FormatMessage(FmFlags dwFlags, IntPtr lpSource, uint dwMessageId, uint dwLanguageId, [MarshalAs(UnmanagedType.LPTStr)] ref string lpBuffer, uint nSize, IntPtr Arguments);
