一個有意義的函數MAKELRESULT

This macro creates an unsigned 32-bit value for use as a return value from a window procedure. The macro concatenates two specified 16-bit values.

 

LRESULT MAKELRESULT( 
  WORD wLow, 
  WORD wHigh 
);

Parameters

wLow

Specifies the low-order word of the new long value.

wHigh

Specifies the high-order word of the new long value.

Return Values

The return value is an unsigned 32-bit value.

Remarks

The MAKELRESULT macro is defined as follows.

#define MAKELRESULT(l, h)   ((LRESULT) MAKELONG(l, h)) 

應用：當函數需要返回2個值時，且這兩個值恰好可以用WORD表示，那麼可以利用MAKERESULT組裝成一個

unsigned 32-bit value.