NS_StringSetData 编辑

« XPCOM API Reference

Summary

The NS_StringSetData function copies data into the string's internal buffer. This is a low-level API.

  #include "nsStringAPI.h"

  nsresult NS_StringSetData(
    nsAString& aString,
    const PRUnichar* aData,
    PRUint32 aDataLength = PR_UINT32_MAX
  );

Parameters

aString

[in] A nsAString instance to modify.

aData

[in] A raw character array to copy into this string.

aDataLength

[in] The length of aData, measured in storage units. If equal to PR_UINT32_MAX, then aData is assumed to be null-terminated. Otherwise, aData need not be null terminated.

Return Values

The NS_StringSetData function returns NS_OK if successful. Otherwise, it returns an error code.

Example Code

  nsStringContainer str;
  rv = NS_StringContainerInit(str);
  if (NS_SUCCEEDED(rv))
  {
    rv = NS_StringSetData(str, "hello world");
    if (NS_SUCCEEDED(rv))
    {
      // now, pass |str| to some function expecting a |const nsAString&| parameter.
    }
    NS_StringContainerFinish(str);
  }

History

This function was frozen for Mozilla 1.7. See bug 239123 for details.

See Also

nsAString