Board index » cppbuilder » Re: Component Editor problems

2005-04-01 10:05:14 PM
cppbuilder2
You know what. I'm giving up on it... other programmers can just live
with my hundred some properties listed in a row. I am wasting to much
time trying to figure this out.
Shannon
 

Remy Lebeau (TeamB) wrote:
I open the property at design time and close it there seems to be a
problem freeing memory or it is freeing the wrong memory and I get an
access violoation when closing down borland builder. I am able to
create a program access the componet property and change the data now so
I am making some progress.
here is the code I use to open the form as showmodal.
TfrmGraphDialog* frmGraphDialog = new TfrmGraphDialog(0);
frmGraphDialog->ShowModal();
I found the following lines of code but I get a compiler error about
"could not find a match for _STL::auto_ptr..." where the ... is the
from declaration code.
std::auto_ptr<TfrmGraphEditor*>frmGraphEditor(new TfrmGraphEditor(0));
frmGraphDialog->ShowModal();
what could be going wrong?
Shannon
 

"SP" < XXXX@XXXXX.COM >wrote in message
TfrmGraphDialog* frmGraphDialog = new TfrmGraphDialog(NULL);
try {
frmGraphDialog->ShowModal();
}
__finally {
delete frmGraphDialog; // <--
}
in the declaration:
#include <memory>
std::auto_ptr<TfrmGraphEditor>frmGraphEditor(new
TfrmGraphEditor(NULL));
frmGraphDialog->ShowModal();
Gambit
 

{smallsort}

Remy Lebeau (TeamB) wrote:
thanks Remy for all you help.
Shannon
 

another question for you.
How do you store property changes using the propertyeditor.
I've seen code resembleing this
((Tmyclass*)(component))->myproperty = whatIwant;
but TPropertyEditor doesn't know what component is
I've tried adding a dynamic_cast like
myclassptr = dynamic_cast<Tmyclass*>(component);
but again TPropertyEditor doesn't know what component is.
I want to programmically set the properties but for some reason I can't
find any example code that does that and I don't understand how it is
done. If I set attributes to paSubClass instead of pa dialog and set
the value in the object inspector everything works correctly, stores the
data into the dfm as expected etc... but I want it to store during the
exit of the dialog form.
please help by explaining how the structure of TPropertyEditor works. I
understand the TComponentEditor but TPropertyEditor is throwing me for a
loop.
thanks
Shannon
 

SP wrote:
exactly how do you use it to get the correct TComponent pointer??
Shannon
 

SP wrote:
I have a book but it starts explaining the structure then stops. It
would be really nice if there was a completed examples of property
editors that use padialog, pasubproperties and such instead of them just
going to the point of getting the property to pop up and stops
explaining what the hell is going on.
can you tell this project is starting to get on my nervs.
Shannon
 

"SP" < XXXX@XXXXX.COM >wrote in message
((TMyClass*) GetComponent(0))->Property = WhatIWant;
Gambit
 

"SP" < XXXX@XXXXX.COM >wrote in message
Gambit
 

CRIPS Why didn't I think of doing that. I was trying to do so many
things like that but never thought of placing the 0 as the variable....
Remy Lebeau (TeamB) wrote:

"SP" < XXXX@XXXXX.COM >wrote in message
handy.
Gambit