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#define INCL_WINLISTBOXES
 
LM_QUERYITEMCOUNT
mp1 = 0L;    /* not used, must be zero  */
mp2 = 0L;    /* not used, must be zero  */
 
An application sends an LM_QUERYITEMCOUNT message to determine the number of
items in a list-box control.
 
This message does not use any parameters.
 
Return Value
 
The return value is the item count.
 
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