%DDEREQ Request data from application.
% DDEREQ requests data from a server application via an established DDE
% conversation. DDEREQ returns a matrix containing the requested data
% or an empty matrix if the function is unsuccessful.
%
% data = DDEREQ(channel,item,format,timeout)
%
% data Array containing requested data (may be empty if data contain
% no numbers, no characters or was an empty FastDDE array)
% Array is empty and logical if function fails.
% channel Conversation channel from DDEINIT.
% item String specifying the server application's DDE item name
% for the data requested.
% format (optional) If NUMERIC, a two-element array specifying the
% format of the data requested. The first element indicates a
% Windows clipboard format to use for the request. The value 1
% corresponds to CF_Text, 13 for CF_UnicodeText;
% other values can be obtained by calling CLIPFORM.
% The second element of the format array
% specifies the type of the resultant matrix. The valid
% types are NUMERIC (the default, corresponding to a value
% of 0) and STRING (corresponding to a value of 1).
% If no format given, the default format array is [1 0].
% New: If STRING, this is the clipboard format name directly.
% Supported formats are 'Text', 'UnicodeText',
% 'XlTable', and 'MatTable'.
% The left-hand-side will be STRING if 'Text' and 'UnicodeText',
% NUMERIC otherwise.
% timeout (optional) Scalar specifying the time-out limit for this
% operation. Timeout is specified in milliseconds.
% (1000 milliseconds = 1 second).
% The default timeout is three seconds.
%
% For example,
% Request a matrix of cells from Excel
% mymtx = ddereq(channel, 'r1c1:r10c10');
%
% See also DDEINIT, DDETERM, DDEEXEC, DDEPOKE, DDEADV, DDEUNADV, CLIPFORM.
% Copyright (c) 2001 TU Chemnitz
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