Retrieve a string referenced by an input window data pointer
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WSupported on Windows
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USupported on Unix
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VSupported on OpenVMS
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NSupported in Synergy .NET
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string = %I_GETSTRING(window_id, ctrl_pointer[, length])
Return value
string
The string referenced by the specified pointer, or a single space if ctrl_pointer is null. (a)
Arguments
window_id
The ID of the input window. (n)
ctrl_pointer
One of the following 16-bit pointers, which are defined in the distributed fldinf.def and inpinf.def files: (i)
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gs_hlpptr |
Help identifier. |
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gs_fmtptr |
Format. |
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gs_info |
Information line. |
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gs_dfltptr |
Default value or string. |
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gs_usrptr |
User-defined string. |
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gs_usrtyp |
User-defined data type. |
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gs_fldnam |
Name of the field. |
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inp_setnam |
Name of current input set. |
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inp_fldnam |
Name of current input field. |
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inp_usertype |
User-defined data type. |
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inp_usertext |
User text string. |
length
(optional) The returned length of the string. (n)
Discussion
%I_GETSTRING enables you to retrieve the strings referenced by an input window’s internal pointers when you use the control argument in I_FLDINF.
The ctrl_pointer options from the gs_pts array in fldinf.def are valid after calling I_FLDINF to load the control structure. The ctrl_pointer options from inpinf.def are valid while within a method subroutine.
In the case of a null pointer, if passed, length will be returned as zero.
Ctrl_pointer is assumed to be valid if non-null. Make sure that only pointers created during construction of the input window are used. An invalid pointer cannot be detected by this routine, and its use will have extremely unpredictable results.
You do not need to declare this function to use it. It is declared in tools.def.
