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A new [Ctrl] timer id strategy [message #14613]

Tue, 04 March 2008 16:07

huanghuan
Messages: 10
Registered: December 2007

Promising Member

Ctrl::~Ctrl() {
	...
	KillTimeCallbacks(this, (byte *) this + sizeof(Ctrl));
	[COLOR=red]KillTimeCallbacks(this, (byte *) this + sizeof(this));[/COLOR]
}

How can red code implement its mean ? I don't know.
Why? reasons as follow:
1. lazy coder write a new ctrl inherit from some deep inherited ctrl classes. lazyer don't want read the all classes in inherit tree.

class ACtrl : public SomeDeepInheritedClassBySomeOthers
{
...
Ctrl::SetTimeCallback(..., id?  );
...
}

2. In big inherit tree. timer id is managed by increment. But sometimes we forget or mistake the last id. The follow code is safe. So Ctrl::SetTimeCallback is desperate.

class A : public Ctrl
{
	char dummy;
public:
...
Upp::SetTimeCallback(..., &dummy);
...
};
class AA : public A
{
	char dummy;
public:
...
Upp::SetTimeCallback(..., &dummy);
...
};

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