BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  What Event should I add my code for loading?          BorlandTalk.com Forum Index -> C++ Builder (Students) View previous topic :: View next topic   Author Message Olives Guest Posted: Wed Mar 28, 2007 2:19 pm    Post subject: What Event should I add my code for loading? I have a program that load a bunch of settings when it loads so I wanted to created a basic loading... message with a TPanel that I just change the visible property as needed. The problem is I'm not sure the event I should add my code for. When I place the code in the OnShow I don't see my loading message. Thanks Back to top Thorsten Kettner Guest Posted: Wed Mar 28, 2007 7:01 pm    Post subject: Re: What Event should I add my code for loading? "Olives" <junkmail78 (AT) charter (DOT) net> wrote: Quote: When I place the code in the OnShow I don't see my loading message. OnShow happens immediately _before_ the form gets shown. There are two ways to solve that: Either post a user defined msg in OnShow and write code to react on that msg or display your loading message in OnActivate. The second approach is easier: void __fastcall TFormMain::FormActivate(TObject *Sender) { static bool FirstTime = true; if(FirstTime) { FirstTime = false; ... } } Back to top Olives Guest Posted: Thu Mar 29, 2007 8:10 am    Post subject: Re: What Event should I add my code for loading? I used the FormActivate but it doesn't seem to be working. I placed a ShowMessage() and it gets executed before the form shows up. void __fastcall TMain::FormActivate(TObject *Sender) { ShowMessage("Do you see the form?"); // No Form at this point // Show load message LoadListPnl->Visible = true; LoadListPnl->Refresh(); // Change Cursor to hourglass OldCursor = Screen->Cursor; Screen->Cursor = crHourGlass; // Call load programs static bool Load_Started = false; if(! Load_Started) { Load_Started = true; GetProgramList(ListView); } // Change Cursor to normal Screen->Cursor = OldCursor; // Hide load message LoadListPnl->Visible = false; } "Thorsten Kettner" <ANSWERBYthorsten.kettner (AT) otto (DOT) de> wrote in message news:460a6739$1 (AT) newsgroups (DOT) borland.com... Quote: OnShow happens immediately _before_ the form gets shown. There are two ways to solve that: Either post a user defined msg in OnShow and write code to react on that msg or display your loading message in OnActivate. The second approach is easier: void __fastcall TFormMain::FormActivate(TObject *Sender) { static bool FirstTime = true; if(FirstTime) { FirstTime = false; ... } } Back to top Thorsten Kettner Guest Posted: Thu Mar 29, 2007 8:10 am    Post subject: Re: What Event should I add my code for loading? "Olives" <junkmail78 (AT) charter (DOT) net> wrote: Quote: I used the FormActivate but it doesn't seem to be working. I placed a ShowMessage() and it gets executed before the form shows up. void __fastcall TMain::FormActivate(TObject *Sender) { ShowMessage("Do you see the form?"); // No Form at this point Sorry, I have no idea why this isn't working for you. It works for me for the main form and any secondary form and has always worked that way. OnActivate should be fired when the form is visible and gets activated. Back to top Olives Guest Posted: Thu Mar 29, 2007 1:37 pm    Post subject: Re: What Event should I add my code for loading? If I place the code into a TTimer and set the Interval to 1 and disable the TTimer when it's executed the first time my load message works, but it feels kind of cheesy. "Thorsten Kettner" <ANSWERBYthorsten.kettner (AT) otto (DOT) de> wrote in message news:460b6446$1 (AT) newsgroups (DOT) borland.com... Quote: Sorry, I have no idea why this isn't working for you. It works for me for the main form and any secondary form and has always worked that way. OnActivate should be fired when the form is visible and gets activated. Back to top Hans Galema Guest Posted: Thu Mar 29, 2007 8:09 pm    Post subject: Re: What Event should I add my code for loading? Olives wrote: Quote: If I place the code into a TTimer and set the Interval to 1 and disable the TTimer when it's executed the first time my load message works, but it feels kind of cheesy. It is an elegant solution. If OnActivate is not usable for you then try the OnPaint event. The OnPaint of the form will be there only if your form is not covered up with controls. Hans. Back to top JD Guest Posted: Fri Mar 30, 2007 2:24 am    Post subject: Re: What Event should I add my code for loading? "Olives" <junkmail78 (AT) charter (DOT) net> wrote: Quote: [...] works, but it feels kind of cheesy. Thorsten suggested that you use the Win32 API PostMessage in the form's constructor. Since the TTimer is message based, you've accomplished the same without defining a custom message and it's handler. ~ JD Back to top Olives Guest Posted: Fri Mar 30, 2007 3:39 pm    Post subject: Re: What Event should I add my code for loading? Well I guess the solution wasn't as bad as I thought I was just expecting a form event I could use instead. I tried using the form's OnPaint event and that seems to work too. Thanks for all your input guys :) "Hans Galema" <notused (AT) notused (DOT) nl> wrote in message news:460bd78c$1 (AT) newsgroups (DOT) borland.com... Quote: Olives wrote: If I place the code into a TTimer and set the Interval to 1 and disable the TTimer when it's executed the first time my load message works, but it feels kind of cheesy. It is an elegant solution. If OnActivate is not usable for you then try the OnPaint event. The OnPaint of the form will be there only if your form is not covered up with controls. Hans. Back to top DreamChaser Guest Posted: Wed Apr 04, 2007 5:34 am    Post subject: Re: What Event should I add my code for loading? Olives wrote: Quote: I have a program that load a bunch of settings when it loads so I wanted to created a basic loading... message with a TPanel that I just change the visible property as needed. The problem is I'm not sure the event I should add my code for. When I place the code in the OnShow I don't see my loading message. Thanks Another way: Create a form (A flash screen) that displays the messages about the status of the loading of your program. display it from the project source file. I would take it out of the auto create section of the project options, and manually create, show, and delete it. I believe that their was a really good example that I have used in the past in Howard Howe's (sp) great book, "BCB - How To:" DC Back to top Bruce Salzman Guest Posted: Wed Apr 04, 2007 7:12 am    Post subject: Re: What Event should I add my code for loading? "DreamChaser" <NO-Spam@No-Span.net> wrote in message news:4612f27b$1 (AT) newsgroups (DOT) borland.com... Quote: Another way: Create a form (A flash screen) that displays the messages about the status of the loading of your program. display it from the project source file. I would take it out of the auto create section of the project options, and manually create, show, and delete it. I believe that their was a really good example that I have used in the past in Howard Howe's (sp) great book, "BCB - How To:" Ah, yes. 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