PackDDElParam

The PackDDElParam function packs a DDE lParam value into an internal structure used for sharing DDE data between processes.

LONG PackDDElParam(
  UINT msg,  // DDE message to be posted
  UINT uiLo, // low-order word of lParam of message
  UINT uiHi  // high-order word of lParam of message
);
 

Parameters

msg

Specifies the DDE message to be posted.

uiLo

Specifies a value that corresponds to the 16-bit Windows low-order word of an lParam parameter for the DDE message being posted.

uiHi

Specifies a value that corresponds to the 16-bit Windows high-order word of an lParam parameter for the DDE message being posted.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero.

Remarks

The return value must be posted as the lParam parameter of a DDE message; it must not be used for any other purpose. Once the application posts a return value, it need not perform any action to dispose of the lParam parameter.

PackDDElParam eases the porting of 16-bit Windows-based applications to Win32-based applications.

An application should call this function only for posted DDE messages.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in dde.h.
  Import Library: Use user32.lib.

See Also

Dynamic Data Exchange Overview, Dynamic Data Exchange Functions, FreeDDElParam, ReuseDDElParam, UnpackDDElParam