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DragQueryFile function

Retrieves the names of dropped files that result from a successful drag-and-drop operation.

Syntax


UINT DragQueryFile(
  _In_   HDROP hDrop,
  _In_   UINT iFile,
  _Out_  LPTSTR lpszFile,
  UINT cch
);

Parameters

hDrop [in]

Type: HDROP

Identifier of the structure that contains the file names of the dropped files.

iFile [in]

Type: UINT

Index of the file to query. If the value of this parameter is 0xFFFFFFFF, DragQueryFile returns a count of the files dropped. If the value of this parameter is between zero and the total number of files dropped, DragQueryFile copies the file name with the corresponding value to the buffer pointed to by the lpszFile parameter.

lpszFile [out]

Type: LPTSTR

The address of a buffer that receives the file name of a dropped file when the function returns. This file name is a null-terminated string. If this parameter is NULL, DragQueryFile returns the required size, in characters, of this buffer.

cch

Type: UINT

The size, in characters, of the lpszFile buffer.

Return value

Type: UINT

A nonzero value indicates a successful call.

When the function copies a file name to the buffer, the return value is a count of the characters copied, not including the terminating null character.

If the index value is 0xFFFFFFFF, the return value is a count of the dropped files. Note that the index variable itself returns unchanged, and therefore remains 0xFFFFFFFF.

If the index value is between zero and the total number of dropped files, and the lpszFile buffer address is NULL, the return value is the required size, in characters, of the buffer, not including the terminating null character.

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Shellapi.h

Library

Shell32.lib

DLL

Shell32.dll (version 4.0 or later)

Unicode and ANSI names

DragQueryFileW (Unicode) and DragQueryFileA (ANSI)

See also

DragQueryPoint

 

 

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