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Jet
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 Posted: Fri Aug 20, 2004 8:56 am Post subject: Property with parameter |
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Hi, good day!
I declared a property with index in my control
__property AnsiString Cells[int][int] = {read = GetCells,
write = SetCells};
but it always causes an access violation.
Usually, my read access specifier is a variable, for example,
read = FCells. I can initialize this in the constructor.
But with a function read access specifier, there are times that
the program executes that function even if there is no one
calling it (or none, I think so). Here is some lines of the code:
class TEditListView : public TListView
{
private:
AnsiString __fastcall GetCells(int ARow,int ACol);
void __fastcall SetCells(int ARow,int ACol, AnsiString AStr);
__published :
__property AnsiString Cells[int][int] = {read = GetCells,
write = SetCells};
BEGIN_MESSAGE_MAP
VCL_MESSAGE_HANDLER(WM_LBUTTONDOWN, TMessage, WMLButtonDown)
VCL_MESSAGE_HANDLER(LVM_INSERTCOLUMN, TMessage,
LVMInsertColumn)
END_MESSAGE_MAP(TListView);
};
When I debug it, the value of ARow and ACol is both 1242780.
Is there a special procedure for function read-access specifiers
or is it caused by some other forces =) that I can't see?
Thanks!
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Todd Brylski
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| Posted: Fri Aug 20, 2004 11:18 am Post subject: Re: Property with parameter |
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"Jet" <jettosan (AT) yahoo (DOT) com> wrote
| Quote: | __published :
__property AnsiString Cells[int][int] = {read = GetCells, write = SetCells};
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Properties defined in a __published section cannot be array properties.
Move it to public and it will work fine.
Object Inspector reads published properties of a component
whenever the component is selected and even when it needs to
repaint its window.
Todd
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Jet
Guest
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| Posted: Mon Aug 23, 2004 1:24 am Post subject: Re: Property with parameter |
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"Todd Brylski" <tbrylski (AT) yyaahhoooo (DOT) com> wrote:
| Quote: | Properties defined in a __published section cannot be array properties.
Move it to public and it will work fine.
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Thanks Todd! =)
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