系统编程

开发平台：

Visual C++

dragsize.h：源码内容

							#define SETWINDOWPOINTER(hwnd, name, p) SetWindowLongPtr(hwnd, 0, (LONG_PTR)p)
#define GETWINDOWPOINTER(hwnd, name)	((name)GetWindowLongPtr(hwnd, 0))
#define ALLOCWINDOWPOINTER(name, size)	((name)LocalAlloc(LPTR, size))
#define FREEWINDOWPOINTER(p)		LocalFree((HLOCAL)p)
#define GETWINDOWID(hwnd)               GetWindowLong(hwnd, GWLP_ID)
#define DRAGSIZECLASSNAME               TEXT("DragSizeWindow")
HWND WINAPI CreateDragSizeWindow(LONG style, int x, int y, int wid, int hgt, HWND hwndParent, LONG wID);
BOOL FAR PASCAL InitDragSizeClass(void);
#define DSM_DRAGPOS	(WM_USER)
#define DSN_BEGINDRAG	(0)
#define DSN_DRAGGING	(1)
#define DSN_ENDDRAG	(2)
#define DSN_NCCREATE	(3)

						