On Sat, 14 Jul 2007, German C. Basisty wrote:
> Hi, me again! > > > > How do I do to avoid a circular unit reference? What If after form2 shows > up, I want a button to make it disappear and show form1 again? I tryed > adding Unit1 to the uses clause of Unit2, but it doesnt compile showin an > error about circular unit reference. Add it to the uses clause in the implementation section. But my guess is that you need to shown form2 with showmodal ? After it is closed, form1 will be activated again. It does mean form1 remain visible, but cannot be activated till form2 is closed. In that case you would not need to reference unit1 from unit2... Michael. > > > > Rest regards > > > > De: Charl van Jaarsveldt [mailto:[EMAIL PROTECTED] > Enviado el: sábado, 14 de julio de 2007 04:41 p.m. > Para: [email protected] > Asunto: Re: [lazarus] Call a form from another form > > > > You should have a unit for form1 called unit1 (if not haven't changed the > name), and another unit, called unit2 for form2. > If you look at unit1 in the editor, you will see that it starts like: > > unit Unit1; > > {$mode objfpc}{$H+} > > interface > > uses > Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, > StdCtrls; > > Now, add unit2 to the uses list so that it is: > uses > Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, > StdCtrls, unit2; > > This is assuming you haven't changed the names yet. :-) > > Basically, the uses clause tells the compiler which units, or source files, > you are using in the one you are busy with, so for every unit you use, you > need to specify it in the uses clause. > > Hope it helps, > Charl > > On 7/14/07, German C. Basisty <[EMAIL PROTECTED] > wrote: > > It does not compile, sorry. I think I forgot to add the unit of form2. I > really dont know hot to do that, may you please send me an example? J > > Regards > > > > De: Charl van Jaarsveldt [mailto:[EMAIL PROTECTED] > Enviado el: sábado, 14 de julio de 2007 03:59 p.m. > Para: [email protected] > Asunto: Re: [lazarus] Call a form from another form > > > > Hello, > > When you say it doesn't work, what do you mean? It does not compile, or it > does not work the way you expected? > > If compiling is a problem, it could be that you forgot to add the unit of > form2 in the uses clause for the unit of form1. > > Charl > > On 7/14/07, German C. Basisty <[EMAIL PROTECTED]> wrote: > > Hi! > > > > This is a very newby question, but you have to understand I'm a Linux c++ > (console) developer, not familiar with Delphi. > > I could install Lazarus, tryed a few examples, and now I'm trying to call a > form from another form. So I designed a form (Form1) with a button and a > second form, but it starts on a diferent unit or something. I want to make > the button on form1 call form2, but it seems this button does not know form2 > exist. The statement I used was something like > > > > procedure TForm1.Button1Click(Sender: TObject); > > begin > > Form1.Hide; > > Form2.Show; > > end; > > > > This does not work J > > > > Can someone tell me where to start reading?? > > > > Best regards > > > > > -- > "I love deadlines. I especially love the whooshing sound they make as they > fly by." - Douglas Adams > > > > > -- > "I love deadlines. I especially love the whooshing sound they make as they > fly by." - Douglas Adams > >
