NPGetPropertyText function (npapi.h)

Article
10/13/2021

Retrieves the names of buttons to add to a property dialog box for a network resource.

Syntax

DWORD NPGetPropertyText(
  [in]      DWORD  iButton,
  [in]      DWORD  nPropSel,
  [in]      LPWSTR lpName,
  [out]     LPWSTR lpButtonName,
  [in, out] DWORD  nButtonNameLen,
  [in]      DWORD  nType
);

Parameters

[in] iButton

Indicates the index of the button. File Manager supports a maximum of six buttons. This parameter is numbered 1-6 for each of the possible buttons if only one file is selected, or 11-16 if multiple files are selected.

[in] nPropSel

Specifies what items the property dialog box focuses on. This can be one of the following values.

Value	Meaning
WNPS_FILE	A single file.
WNPS_DIR	A single directory.
WNPS_MULT	A selection of multiple files, directories, or both.

[in] lpName

Pointer to a null-terminated string that contains the names of the item or items to be viewed or edited by means of the dialog box. The only supported items are files and directories, so the item names are file names. These should be unambiguous, contain no wildcard characters, and be fully qualified (for example, C:\LOCAL\EXAMPLE.DOC). Multiple file names should be separated with spaces. A file name that contains spaces may be surrounded by quotes (for example, "C:\My File"). In this case. it is treated as a single name. The caret character '^' may also be used as the quotation mechanism for single characters (for example, C:\My^"File, "C:\My^"File" both refer to the file C:\My"File).

[out] lpButtonName

Pointer to a buffer where the network provider should copy the name of the property button. On success, the buffer pointed to by lpButtonName contains the name of the property button. If this buffer, on exit, contains the empty string, then the button corresponding to that name and all succeeding buttons will be removed from the dialog box. The network provider cannot "skip" a button.

[in, out] nButtonNameLen

Specifies the size of the lpButtonName buffer in characters, including the terminating null character.

[in] nType

Specifies the item type, which must be WNTYPE_FILE.

Return value

If the function succeeds, it should return WN_SUCCESS and lpButtonName can be used. If it points to the empty string, no button corresponds to an index as high as iButton. If the return value is other than WN_SUCCESS, the provider should also call SetLastError to set extended error information. Extended error codes include the following.

Return code	Description
WN_OUT_OF_MEMORY	Could not load string from resources.
WN_MORE_DATA	The given buffer is too small to fit the text of the button.
WN_BAD_VALUE	The lpName parameter is an unexpected form.
WN_NOT_SUPPORTED	Property dialog boxes are not supported for the given object type, nType.

Remarks

File Manager calls this function each time the property dialog box is brought up, and it does this before displaying the dialog box. If the user clicks a button added through this function by the network provider, the NPPropertyDialog function is called with the appropriate parameters.

Only File Manager calls NPGetPropertyText, and it uses this function for files and directories.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	npapi.h

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