Category: <b>mouse/pointing device</b>
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<pre><b>INT 33 - MS MOUSE v6.0+ - SET ALTERNATE MOUSE USER HANDLER</b>

	AX = 0018h
	CX = call mask (see <a href=../../it/74/31.html>#03174</a>)
	ES:DX -&gt; FAR routine to be invoked on mouse events (see <a href=../../it/75/31.html>#03175</a>)
Return: AX = status
	    0018h if successful
	    FFFFh on error
Notes:	up to three handlers can be defined by separate calls to this function,
	  each with a different combination of shift states in the call mask;
	  calling this function again with a call mask of 0000h undefines the
	  specified handler (official documentation); specifying the same
	  call mask and an address of 0000h:0000h undefines the handler (real
	  life)
	some versions of the documentation erroneously reverse the order of
	  the bits in the call mask
SeeAlso: AX=000Ch,AX=0014h,AX=0019h

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