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Lance Robaldo
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 Posted: Wed Feb 15, 2006 10:03 pm Post subject: TDBNavigator in Studio 2006 |
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We just upgraded from BCB6 to BCB Studio 2006.
I have a project with a TDBNavigator in it. I'm trying to programatically
set the buttons that I want to be visible.
The code is as follows:
NavBar->VisibleButtons =TButtonSet() << nbFirst << nbPrior << nbNext <<
nbLast << nbInsert << nbDelete << nbEdit << nbPost << nbCancel ;
However I'm getting the following compiler error:
[C++ Error] EedpMainForm.cpp(1502): E2094 'operator<<' not implemented in
type 'TButtonSet' for arguments of type 'TNavigateBtn'
This has always worked fine in BCB5.
I pulled up Borland's help, and their example is virtually identical.
Any ideas?
Thanks,
Lance. |
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JD
Guest
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| Posted: Fri Feb 17, 2006 3:03 am Post subject: Re: TDBNavigator in Studio 2006 |
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"Lance Robaldo" <RRobaldo (AT) wltsoftware (DOT) com> wrote:
| Quote: |
[...] This has always worked fine in BCB5. I pulled up
Borland's help, and their example is virtually identical.
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It works with BCB6 as well. I suspect that another fix for v10
broke it so it should be reported to QC so that it can be fixed
in the next sp.
I don't have v10 but I'm confident that the following is a
viable workaround. TNavButton is derived from TSpeedButton
so to set the properties for a TNavButton, use the same methods
that you would use for a TSpeedButton. To get a pointer to the
individual TNavButton, use the TDBNavigator's Components
property:
//-------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
SetDBNavBtn( nbFirst, false );
}
//-------------------------------------------------------------
void __fastcall TForm1::SetDBNavBtn( TNavigateBtn Button, bool State )
{
(static_cast<TNavButton*>(DBNavigator1->Components[Button]))->Visible = State;
}
//-------------------------------------------------------------
If you want to set multiple buttons without the control
repainting itself:
::SendMessage(DBNavigator1->Handle, WM_SETREDRAW, FALSE, 0);
SetDBNavBtn( nbFirst, false );
SetDBNavBtn( nbLast, true );
::SendMessage(DBNavigator1->Handle, WM_SETREDRAW, TRUE, 0);
DBNavigator1->Refresh();
~ JD |
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