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All the samples discussed above used the visual components defined in the c-tree Plus palette. It is possible to develop the same work declaring the components in the program. This declaration is more general, in the sense that it allows for a component defined in one form to be used in other forms. On the other hand, it is very important that the object is destroyed before closing the program to avoid memory leakage. When the component is dropped in the form, it is destroyed when the form is destroyed. This doesn't happen when the object is instantiated and created in run time, and it has to be destroyed with the method Free. This is valid for all objects created at run time.
To declare, instantiate, and logon to a CtSession component, use the code:
Delphi Example
procedure Form1.LogonSession();
var
CtSession1: TCtSession;
begin
try
CtSession1:=TCtSession.Create(Self);
CtSession1.Server := 'FAIRCOMS';
CtSession1.User := 'ADMIN';
CtSession1.Password := 'ADMIN';
CtSession1.Active := True;
except
on E : ECtError do
Application.ShowException(E);
end;
end;
C++ Example
void Form1:: LogonSession()
{
try
{
}
catch (ECtError& E)
{
Application->ShowException(&E);
}
}
The other components work the same.
