U++ forum: Welcome to the forum

Search on this site

Search in forums

Home » U++ Library support » U++ Widgets - General questions or Mixed problems » DropList with "quick trigger option": best way to implement?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

DropList with "quick trigger option": best way to implement? [message #4909]

Thu, 24 August 2006 22:16

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

I want a DropList which triggers an external action not only when the widget view is clicked (WhenClick) but already when a DropList item is selected (list.WhenSelect).

It is quite easy to achieve this by deriving MyDropList from DropList and overriding Select().

But I don't like this solution. It appears too complicated. Above all good C++ policy forbids to override non-virtual base class functions and Select() is a non-virtual function.

Is there a simpler or at least "cleaner" solution?

Werner

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4915 is a reply to message #4909]

Fri, 25 August 2006 00:21

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

I am not completely sure I understand.

Do you need callback to be invoked when you are goind through the pop-upped list?

Mirek

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4919 is a reply to message #4915]

Fri, 25 August 2006 06:53

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

luzr wrote on Fri, 25 August 2006 00:21

I am not completely sure I understand.

Do you need callback to be invoked when you are goind through the pop-upped list?

Mirek

Not exactly. I want to perform an action as soon as a new item is selected.

For instance think of the "reference / Display" example and imagine the DropList to be near a control in which you can read a text (= target). As soon as an item in the pop-upped list is clicked, the target font should change accordingly. (Normal behavior is that clicking one item of the list just changes the DropList control itself so that another click is needed to change the appearance of the text. Basically I just want to avoid one click Very Happy

.)

Werner

[Updated on: Fri, 25 August 2006 06:54]

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4922 is a reply to message #4919]

Fri, 25 August 2006 09:40

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

That is default WhenAction.

WhenAction, the basic Callback defined in Ctrl, is called by most (not all) widgets each time when user (!) changes the status of widget. Usually, with the exception of Button, "changes the status of widget" means that the Value of widget has changed.

Just use <<= to assign the callback.

Mirek

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4929 is a reply to message #4922]

Fri, 25 August 2006 17:07

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

luzr wrote on Fri, 25 August 2006 09:40

Thank you very much!

Shocked

I knew that there was a very simple solution. Surprised

May I respectfully suggest to transform this reply into a piece of (easy to find) documentation? Rolling Eyes

Or have I missed the corresponding topic? Embarassed

Werner

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4946 is a reply to message #4929]

Sun, 27 August 2006 20:01

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

http://upp.sourceforge.net/srcdoc$CtrlLib$Tutorial$en-us.htm l

ch 13

or Ctrl documentation.

Mirek

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4954 is a reply to message #4946]

Sun, 27 August 2006 20:45

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

luzr wrote on Sun, 27 August 2006 20:01

http://upp.sourceforge.net/srcdoc$CtrlLib$Tutorial$en-us.htm l

ch 13

or Ctrl documentation.

Mirek

I plead guilty. Crying or Very Sad

Werner

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4962 is a reply to message #4954]

Sun, 27 August 2006 22:56

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Do not. Tutorial is quite new thing.

I guess it would still have sense to make another short summary of basic U++ techniques / features. Posts like yours help me to identify areas...

Mirek

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4974 is a reply to message #4962]

Mon, 28 August 2006 21:57

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

luzr wrote on Sun, 27 August 2006 22:56

...

I guess it would still have sense to make another short summary of basic U++ techniques / features. Posts like yours help me to identify areas...

Mirek

I would appreciate a short outline telling me what Ultimate++ does when it is notified of an event by the OS Smile

.

And I would appreciate documentation where functions and defines are in alphabetical order Rolling Eyes

.

Werner

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4975 is a reply to message #4974]

Mon, 28 August 2006 23:27

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Quote:

I would appreciate a short outline telling me what Ultimate++ does when it is notified of an event by the OS Smile

Calls virtual method of Ctrl...

Quote:

And I would appreciate documentation where functions and defines are in alphabetical order Rolling Eyes

Is not full-text search better?

I even plan to connect it to some hotkey (like you press e.g. Alt+F1 on "RectTracker" and TheIDE shows all topics with "RectTracker" contained).

Mirek

Report message to a moderator

Re: DropList with "quick trigger option": best way to implement? [message #4993 is a reply to message #4975]

Tue, 29 August 2006 21:24

Werner
Messages: 234
Registered: May 2006
Location: Cologne / Germany

Experienced Member

Quote:

And I would appreciate documentation where functions and defines are in alphabetical order Rolling Eyes

Is not full-text search better?

I even plan to connect it to some hotkey (like you press e.g. Alt+F1 on "RectTracker" and TheIDE shows all topics with "RectTracker" contained).

Mirek

Not with me:

1.
I don't believe in the paperless office. In many cases simple paper is the handiest.

2.
Full text search would be great - if it worked ... Rolling Eyes

Take for example "WhenAction":
a) I click on "Help Topics".
b) The tree opens up and shows among other things "Ctrl".
c) I start scrolling and looking for "WhenAction".
d) I'm still scrolling and looking Confused

.
e) Same as d) Crying or Very Sad

f) I fail to see it Evil or Very Mad

.
Or - one of my favorite questions - am I doing it wrong?

Werner

Report message to a moderator

Previous Topic:	OcxConnectionPointContainer
Next Topic:	design custom controls

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Apr 19 06:34:41 CEST 2024

Total time taken to generate the page: 0.05366 seconds