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callbacks and objects [message #19017] |
Wed, 05 November 2008 23:06 |
sapiency
Messages: 56 Registered: September 2008
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Member |
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Hi,
I want to use one callback for multiple elements. Is it possible to use the element in the callback?
example:
class TEST
{
...
public:
typedef TEST CLASSNAME;
TEST();
void OnChange();
EditString s1;
EditString s2;
...
};
TEST::TEST()
{
Add(s1);
Add(s2);
s1.WhenAction = THISBACK(OnChange);
s2.WhenAction = THISBACK(OnChange);
...
}
TEST::OnChange()
{
OUTPUT(sx.GetData());
}
If I use THISBACK1 I got the message that the Upp::Ctrl& is private. If I use sn in the Callback, it works, but then I need one callback for each field ...
second:
I look for catching key events from special keys (return, Fn, ...). How can I catch them?
regards reinhard
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Re: callbacks and objects [message #19023 is a reply to message #19017] |
Thu, 06 November 2008 09:28 |
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mirek
Messages: 13975 Registered: November 2005
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Ultimate Member |
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sapiency wrote on Wed, 05 November 2008 17:06 | Hi,
I want to use one callback for multiple elements. Is it possible to use the element in the callback?
example:
class TEST
{
...
public:
typedef TEST CLASSNAME;
TEST();
void OnChange();
EditString s1;
EditString s2;
...
};
TEST::TEST()
{
Add(s1);
Add(s2);
s1.WhenAction = THISBACK(OnChange);
s2.WhenAction = THISBACK(OnChange);
...
}
TEST::OnChange()
{
OUTPUT(sx.GetData());
}
If I use THISBACK1 I got the message that the Upp::Ctrl& is private. If I use sn in the Callback, it works, but then I need one callback for each field ...
|
I am sorry, but it is not quite clear what you are really doing
Use THISBACK1 if you want to pass some parameter with callback (specified inside THISBACK1, like
void TEST::OnChange(EditField *sx) { OUTPUT(sx->GetData()); }
....
s1 <<= THISBACK1(OnChange, &s1);
s2 <<= THISBACK1(OnChange, &s2);
Quote: |
I look for catching key events from special keys (return, Fn, ...). How can I catch them?
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Override Ctrl::Key or Ctrl::HotKey. Check propagation rules in Ctrl reference.
Mirek
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