Region parameter structure.
struct{
WORD wLeft;
WORD wTop;
WORD wRight;
WORD wBottom;
}NET_POS_PARAM, *LPNET_POS_PARAM;
X-coordinate of the upper-left corner of the boundary frame, value range: [1, 1000].
Y-coordinate of the upper-left corner of the boundary frame, value range: [1, 1000].
X-coordinate of the lower-right corner of the boundary frame, value range: [1, 1000].
Y-coordinate of the lower-right corner of the boundary frame, value range: [1, 1000].