区域的问题(50分)

C

cqbaobao

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #1

请问区域为空怎么表示，或者这种状态如何取得？

 

C

cqbaobao

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #2

没人

 

W

wukw

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-14

• #3

http://www.delphibbs.com/delphibbs/dispq.asp?lid=722498
斑竹同志，请为我收回分数，300大洋呢！

 

卷

卷起千堆雪tyn

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-14

• #4

var
rgn :HRGN;

begin
.................
if rgn = null then
...........
end;

 

C

cqbaobao

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-15

• #5

谢谢版主，但
// if rgn = null then
应为
if rgn = NULLREGION then
吧?