----- Original Message -----
Sent: Tuesday, May 01, 2001 8:21 PM
Subject: RE: [DUG]: Passing DataSet to
Quick Report
Possibly an answer to two question in
one:
First, I assume you shouldnt pass the Dataset
name, pass the Dataset object (TDataset) - which is just a pointer
anyway.
Regarding the variables thing the ideal is to write
code that is self documenting and as self contained as possible. A procedure
that depends on a global variable to operate correctly requires someone to
explain that fact, and is less portable (what say that global variable has a
different name in another program?). That said, class methods often rely on
form level variables - but they are always part of the class that has these
variables so, again, things are self contained.
Avoid using global variables, but not too an extreme.
Often you'll want to, say, remember the state of a grid (edited/ not edited)
and a procedure will need to chck out this global variable to, say,
disable/enable buttons ... thats fair enough. But make sure its easy to follow
- the variables are clearly named etc.
[James
Low] -----Original Message-----
From: Mark
Howard [mailto:[EMAIL PROTECTED]]
Sent: 3 May 2001
09:51
To: Multiple recipients of list delphi
Subject:
[DUG]: Passing DataSet to Quick Report
Hi All
I would like to pass a Dataset name to a
Quick Report but am not sure how to go about this.
I have something like:
with QueryDataModule.Query1 do
begin
Close;
DatabaseName := MainForm.DatabaseName;
SQL.Clear;
SQL.Add('Select stuff from
Tables);
Open;
end;
Application.CreateForm(TBCInv, BCInv);
if OutMode =
'Screen' then
BCInv.Report.Preview
else BCInv.Report.Print;
What I want to do is pass
QueryDataModule.Query1 to BCInv on this occaision
and some other dataset to it on another
occaision.
Has anyone some code snippets that demonstrate
this?
TIA
Mark
