OnCreateComponent question

rbuser

Greetings!

I am using the OnCreateComponent event to show a form to the user that
gathers info which I then use for the properties of that component. If the
user cancels out of the form, is there a way to then cancel the component
creation (TppLabel), or remove/delete the component from the designer
surface?

I am using D7 - RB 10.04.

TIA for the help!

Gary

nicocizik

Hi Gary,

Try freeing the component if the dialog is canceled inside the
OnCreateComponent event. In my quick testing this prevented the component
from ever being added to the designer workspace.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Hi Nico,

When I try freeing the component in the OnCreateComponent Event, the
attached error message appears (or I get an AV). Is there anything else I
could try?

Thanks, Gary

nicocizik

Hi Gary,

For future reference, please send all attachments to
support@digital-metaphors.com.

I apoligize, instead of using the OnCreateComponent to free the component,
try using the OnValidateComponent event to set the Valid parameter to False
if you would not like the component to appear. In my testing the following
code worked correctly...

procedure TForm1.ppDesigner1ValidateComponent(Sender: TObject; Component:
TComponent; var Valid: Boolean);
begin
if Component is TppLabel then
Valid := False;
end;

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Hi Nico,

Yep - the OnValidateComponent event did the trick. Thanks very much for the
help!

Gary