DrawText

The OS/2 and Windows NT versions of this function differ as follows:

• Windows NT uses the last mnemonic on a line (the other mnemonic characters are treated as normal characters); the OS/2 implementation uses the first mnemonic as the mnemonic.

• Windows NT does not allow DT_MULTILINE to be mixed with DT_BOTTOM or DT_VCENTER. The OS/2 implementation does.

• OS/2 does not support the Windows NT undocumented DT_INTERNAL flag.

• The OS/2 version has the following new flags:

  DT_AMPERSAND

  Causes the ampersand to be recognized as the mnemonic character instead of the tilde.
  DT_MULTILINE
  Enables WinDrawText to output two or more lines of text in one operation. DT_MULTILINE is mutually exclusive with DT_SINGLELINE and DT_ERASERECT; if used in combination with these, the result is undefined.
  DT_NOCLIP
  Text is not clipped to the rectangle passed in. Can improve performance and alter the text output.
  DT_OPAQUE
  Causes the text background rectangle to be filled with the background color.
  DT_SINGLELINE
  Causes linefeeds and carriage returns to be treated like normal characters.
  DT_VERTICALEXTENT
  If DT_LINEEXTENT is set, WinDrawText and DrawText returns the height of text drawn (or potentially drawn) instead of the number of characters printed.
  
  In OS/2, the DT_EXTERNALLEADING flag might affect how text is drawn if the font used has an non-zero external leading value, especially if multiple lines of text are output (DT_MULTILINE). Previously, this flag affected only the extent of the rectangle returned when DT_QUERYEXTENT was set.

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