BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  refresh doesn't work          BorlandTalk.com Forum Index -> Delphi VCL Components Writing View previous topic :: View next topic   Author Message Clayton L. Wilson Guest Posted: Wed Aug 06, 2003 12:45 am    Post subject: refresh doesn't work I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. Wilson Back to top Paul Nicholls Guest Posted: Wed Aug 06, 2003 1:01 am    Post subject: Re: refresh doesn't work You could try overriding the compound component's SetBounds method and place it there... "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> wrote Quote: I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. Wilson Back to top Clayton L. Wilson Guest Posted: Wed Aug 06, 2003 1:37 am    Post subject: Re: refresh doesn't work I tried that, but I keep getting the error: Control '' has no parent window. Am I doing something wrong for Refresh not to be called? "Paul Nicholls" <paul-nicholls (AT) hotmail (DOT) com> wrote Quote: You could try overriding the compound component's SetBounds method and place it there... "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> wrote in message news:3f30500a (AT) newsgroups (DOT) borland.com... I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. Wilson Back to top Clayton L. Wilson Guest Posted: Wed Aug 06, 2003 2:10 am    Post subject: Re: refresh doesn't work I got it. I overrode the resize method, and now it seems to work fine. "Paul Nicholls" <paul-nicholls (AT) hotmail (DOT) com> wrote Quote: You could try overriding the compound component's SetBounds method and place it there... "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> wrote in message news:3f30500a (AT) newsgroups (DOT) borland.com... I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. Wilson Back to top Alexander Bauer Guest Posted: Wed Aug 06, 2003 11:01 am    Post subject: Re: refresh doesn't work Hi, Just for the future: If you recieve the errror "... has no parent window", you try to do something that needs a valid windowhandle witch is not created jet. Check if HandleAllocated before executing theese lines to permit that error. Eg. the window of your parent (containier) control is not created jet and your code calls a function, or what ever, that uses the property Handle of it, or your child controls windowhandle is not created jet and you do something that needs the Handle (could be also somewhere in the VCL not in you code directly). If you first check if HandleAllocated then you woun't get that error. Regards, Alexander Bauer "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> schrieb im Newsbeitrag news:3f305c38 (AT) newsgroups (DOT) borland.com... Quote: I tried that, but I keep getting the error: Control '' has no parent window. Am I doing something wrong for Refresh not to be called? "Paul Nicholls" <paul-nicholls (AT) hotmail (DOT) com> wrote in message news:3f305370$1 (AT) newsgroups (DOT) borland.com... You could try overriding the compound component's SetBounds method and place it there... "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> wrote in message news:3f30500a (AT) newsgroups (DOT) borland.com... I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. Wilson Back to top Clayton L. Wilson Guest Posted: Thu Aug 07, 2003 4:37 pm    Post subject: Re: refresh doesn't work Thanks. I kind of thought that is what it was. In my code, I am performing this before the handle. I overrode the CreateWindowsHandle proc though. Now I can see just where the error happens. "Alexander Bauer" <Alexander.Bauer (AT) AlBaWare (DOT) de> wrote Quote: Hi, Just for the future: If you recieve the errror "... has no parent window", you try to do something that needs a valid windowhandle witch is not created jet. Check if HandleAllocated before executing theese lines to permit that error. Eg. the window of your parent (containier) control is not created jet and your code calls a function, or what ever, that uses the property Handle of it, or your child controls windowhandle is not created jet and you do something that needs the Handle (could be also somewhere in the VCL not in you code directly). If you first check if HandleAllocated then you woun't get that error. Regards, Alexander Bauer "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> schrieb im Newsbeitrag news:3f305c38 (AT) newsgroups (DOT) borland.com... I tried that, but I keep getting the error: Control '' has no parent window. Am I doing something wrong for Refresh not to be called? "Paul Nicholls" <paul-nicholls (AT) hotmail (DOT) com> wrote in message news:3f305370$1 (AT) newsgroups (DOT) borland.com... You could try overriding the compound component's SetBounds method and place it there... "Clayton L. Wilson" <claytonwilson (AT) ev1 (DOT) net> wrote in message news:3f30500a (AT) newsgroups (DOT) borland.com... I have written a compound component, that when I resize it on the form, I need to resize the subcomponents. I placed my code under Refresh and Repaint, but program execution never seems to go there. The code works fine, I just don't know where to place it in my component. Can someone out there tell me where to place it. Thanks a bunch. -- Clayton L. 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