关于CB5中的事件__published问题

vchoushen6 2006-12-20 07:21:02

有两个类的结构如下：
class T1 : public TPersistent
{
......
__published:
__property int x = { read=Fx, write=Fx};
__property TNotifyEvent OnChanged = { read=FOnChanged,write=FOnChanged }

};
class T2 : public TComponent
{
private:
T1 * t1;
__published:
//如何在这里不用R/W函数，直接发布T1类的事件
};
T2放在Form中后，可以看到T1发布的属性，但事件属性却不行，由于我在T2中嵌入了多个类，要是用R/W函数的话，很麻烦，如何能不用R/W函数来完成这个功能呢？

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chenxidu 2007-04-11

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hehe

CACACACACA 2006-12-23

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说错了.是可以公布出来的.D7下是可以的. BCB下还没试.

vchoushen6 2006-12-23

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在CB5里做Component真不如Delphi里好，早知这样，还不如一开始就在Delphi里做，反正CB里也是可以用的

vchoushen6 2006-12-23

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T2中的T1的属性可以展开的，但若从TComponent派生的话，是不行的，只可以生成一个下拉列表，或自定义属性编辑器。

laowang2 2006-12-23

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up

CACACACACA 2006-12-22

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published不出来的.

另外, 真的能看到 T1的 __property int x = { read=Fx, write=Fx}; 这个属性吗?
我这看不到啊. 是不是单独写了属性编辑器?

柯本 2006-12-20

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好像没其它方法,见BCB的HELP:
Category

C++Builder keyword extensions

Syntax

<property declaration> ::=

__property <type> <id> [ <prop dim list> ] = "{" <prop attrib list> "}"

<prop dim list> ::= "[" <type> [ <id> ] "]" [ <prop dim list> ]

<prop attrib list> ::= <prop attrib> [ , <prop attrib list> ]

<prop attrib> ::= read = <data/function id>
<prop attrib> ::= write = <data/function id>
<prop attrib> ::= stored = <data/function id>
<prop attrib> ::= stored = <boolean constant>
<prop attrib> ::= default = <constant>

<prop attrib> ::= nodefault

<prop attrib> ::= index = <const int expression>

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