二、结构体类型
POINT,SIZE,RECT
typedef struct tagPOINT
{
LONG x;
LONG y;
} POINT, *PPOINT, *LPPOINT;
typedef struct tagSIZE
{
LONG cx;
LONG cy;
} SIZE, *PSIZE, *LPSIZE;
typedef struct tagRECT
{
LONG left;
LONG top;
LONG right;
LONG bottom;
} RECT, *PRECT, *LPRECT;