[Pythoncard-users] dbbrowser2 sample - catching events from wx widgets - grid

[<gre...@co...>]

Thanks for the help on the dbBrowser sample.  I see how to create 
widgets at runtime now.  I just have one more question for today.

I am looking at the dbrowser2 sample now which on my computer is:
C:\Python23\Lib\site-packages\PythonCard\samples\dbBrowser\dbBrowser2.py
(note: there may be a bug in dbTable.py as I had to do a global replace 
of "wxPyGridTableBase" to "PyGridTableBase" before it would run.)

This program uses a grid to show a table.  But I don't believe that a 
grid is a pycard widget?  The author seems to be using 
wx.grid.PyGridTableBase.  My general questions are where can I find out 
what events can come from this grid and how do I bind actions to the 
events?  Specifically all I want to do is launch a new window when the 
user clicks on a row in the grid.

I'm not sure if my question is clear here, so let me know if you need 
any other details.

Thanks,

Greg


Kevin Altis wrote:

> On Sep 3, 2004, at 11:42 AM, Gregory Piñero wrote:
> 
>> Hi,
>>
>> I'm looking at the dbrowser sample.  On my computer this is the file:  
>> C:\Python23\Lib\site- packages\PythonCard\samples\dbBrowser\dbBrowser.py
>>
>> So this thing when running seems to know the number of columns in any  
>> table I connect to and then (creates?) that many text boxes to show  
>> the values of each column.  Does anyone know how this would work?  
>> How  are the text boxes created on the fly like that?
>>
>> I was unable to locate any documentation on this this and I can't see  
>> how it does it from the code.
>>
>> Thanks,
>>
>> Greg
> 
> 
> Creating components on the fly is easy, you just need to provide a  
> dictionary of the key:value pairs. Just look at the dictionaries for  
> each component in any .rsrc.py file and you'll see the same kind of  
> dictionary in use. For example, to create a button named 'btn1' in your  
> code you might do something like:
> 
> self.components['btn1'] = {'type':'Button', 'name':'btn1',  
> 'position':(0, 30), 'label':'btn1 hello'}
> 
> So, let's say you want to dynamically create 10 single-line fields when  
> your application starts up. Here's one way you might do it:
> 
>     def on_initialize(self, event):
>         insetFromEdge = 5
>         padding = 4
>         self.components['field0'] = {'type':'TextField',  
> 'name':'field0', 'position':(5, 5), 'text':'field0'}
>         height = self.components.field0.size[1]
>         for i in range(1,10):
>             name = 'field' + str(i)
>             position = (insetFromEdge, insetFromEdge + i * (height +  
> padding))
>             text = name
>             self.components[name] = {'type':'TextField', 'name':name,  
> 'position':position, 'text':text}
> 
> I'm creating the first TextField outside the loop so that I can get the  
> height of a TextField dynamically, which allows the code to work  
> regardless of the default text height on any given platform. You could  
> just as easily, initialize the height to 0 and do an if block after the  
> self.components[name] line to set the height.
> 
> ka
> 
> 
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