Function Reference


Creates the structure of two structures

#include <WinAPIMisc.au3>
_WinAPI_UnionStruct ( $tStruct1, $tStruct2 [, $sStruct = ''] )


$tStruct1 The structure that contains the first source data.
$tStruct2 The structure that contains the second source data.
$sStruct [optional] The string representing the final structure (same as for the DllStructCreate() function).

Return Value

Success: "byte[n]" structure that contains the union data of the $tStruct1 and $tStruct2.
Failure: Sets the @error flag to non-zero.


Important, you have to take into account the alignments of the structures. For example, "byte" & "dword" is
not equivalent to "byte;dword", but equivalent to "align 1;byte;dword".


#include <WinAPIMisc.au3>
#include <WinAPISys.au3>

Local $tStruct1 = DllStructCreate('byte[4]')
_WinAPI_FillMemory($tStruct1, 4, 0xAA)

Local $tStruct2 = DllStructCreate('byte[4]')
_WinAPI_FillMemory($tStruct2, 4, 0xDD)

Local $tStruct3 = _WinAPI_UnionStruct($tStruct1, $tStruct2)

ConsoleWrite('First:  ' & DllStructGetData($tStruct1, 1) & @CRLF)
ConsoleWrite('Second: ' & DllStructGetData($tStruct2, 1) & @CRLF)
ConsoleWrite('Union:  ' & DllStructGetData($tStruct3, 1) & @CRLF)