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分享请教:关于事件调用。
我写了一个窗口函数,其中有一个参数是datawindow类型,而我要调用的这个数据窗口类型参数是从一个userobject中继承过来的，现在我想在此窗口函数中调用该数据窗口的父类(即userobject)的一个函数(带参数),不知道怎么写,谢谢!
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mittee 2004-03-21
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直接调用
jky 2004-03-21
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如果是用户对象该怎么办呢?
thelazyman 2004-03-21
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这样:
w_ancestor::EVENT ue_process( )
其中w_ancestor是祖先窗口,ue_process是祖先窗口的一个函数
w_ancestor::EVENT ue_process( )
其中w_ancestor是祖先窗口,ue_process是祖先窗口的一个函数
jky 2004-03-21
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而且我调用的地方是要写在窗口函数里面的。
jky 2004-03-21
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如果父类是一个用户对象的话也可以这样调用吗?
dotnba 2004-03-21
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Example 1 Suppose a window w_ancestor has an event ue_process. A descendent window has a script for the same event.
This statement in a script in the descendant searches the event chain and calls all appropriate events. If the descendant extends the ancestor script, it calls a script for each ancestor in turn followed by the descendent script. If the descendant overrides the ancestor, it calls the descendent script only:
EVENT ue_process( )
This statement calls the ancestor event only (this script works if the calling script belongs to another object or the descendent window):
w_ancestor::EVENT ue_process( )
Example 2 You can use the pronoun Super to refer to the ancestor. This statement in a descendent window script or in a script for a control on that window calls the Clicked script in the immediate ancestor of that window.
Super::EVENT Clicked(0, x, y)
Example 3 These statements call a function wf_myfunc in the ancestor window (presumably, the descendant also has a function called wf_myfunc):
Super::wf_myfunc( )
Super::POST wf_myfunc( )
This statement in a script in the descendant searches the event chain and calls all appropriate events. If the descendant extends the ancestor script, it calls a script for each ancestor in turn followed by the descendent script. If the descendant overrides the ancestor, it calls the descendent script only:
EVENT ue_process( )
This statement calls the ancestor event only (this script works if the calling script belongs to another object or the descendent window):
w_ancestor::EVENT ue_process( )
Example 2 You can use the pronoun Super to refer to the ancestor. This statement in a descendent window script or in a script for a control on that window calls the Clicked script in the immediate ancestor of that window.
Super::EVENT Clicked(0, x, y)
Example 3 These statements call a function wf_myfunc in the ancestor window (presumably, the descendant also has a function called wf_myfunc):
Super::wf_myfunc( )
Super::POST wf_myfunc( )
