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This is part of Family API which allow to create dual-os version of program runs under OS/2 and DOS
Note: This is legacy API call. It is recommended to use 32-bit equivalent
This call outputs the message in a buffer passed by a caller to the specified handle. The function formats the buffer to prevent words from wrapping if displayed to a screen.
DosPutMessage (FileHandle, MessageLength, MessageBuffer)
rc (USHORT) - return
Return code descriptions are:
- 0 NO_ERROR
- 6 ERROR_INVALID_HANDLE
- 19 ERROR_WRITE_PROTECT
- 321 ERROR_MR_UN_PERFORM
Screen width is assumed to be 80 characters. The DosPutMessage call counts a CR/LF in the 80 characters that it tries to write to the screen. If a word extends past column 78, it is put on the next line. DosPutMessage assumes the starting cursor position is column one when handling a word wrap.
If the last character to be positioned on a line is a double-byte character that would be bisected, the rule above ensures that the character is not bisected.
#define INCL_DOSMISC USHORT rc = DosPutMessage(FileHandle, MessageLength, MessageBuffer); USHORT FileHandle; /* Handle of output file/device */ USHORT MessageLength; /* Length of message buffer */ PCHAR MessageBuffer; /* Message buffer */ USHORT rc; /* return code */
EXTRN DosPutMessage:FAR INCL_DOSMISC EQU 1 PUSH WORD FileHandle ;Handle of output file/device PUSH WORD MessageLength ;Length of message buffer PUSH@ OTHER MessageBuffer ;Message buffer CALL DosPutMessage
Text based on http://www.edm2.com/index.php/DosPutMessage_(FAPI)